{"title":"M273 5.5L V8 — E550 \/ CLS550 \/ S550","description":"\u003cp\u003eParts for the Mercedes M273 5.5L V8 — E550, CLS550, S550, CLK550, SL550, GL550. Headers, throttle body actuators, and OEM replacements.\u003c\/p\u003e","products":[{"product_id":"clk550-e550-cls550-sl550-mid-length-performance-headers-m273-v8-na","title":"Mid-length Headers for Mercedes E550 CLK550 CLS550 SL550 M273 V8 NA","description":"\u003cp\u003eTransform your Mercedes-Benz M273 V8 with our \u003cstrong\u003ehigh-flow mid-length performance headers\u003c\/strong\u003e. Engineered to cut backpressure and maximize airflow, they unlock more horsepower and torque and a deeper, more aggressive exhaust note — a dyno-proven \u003cstrong\u003e+38 hp and +39 lb-ft\u003c\/strong\u003e. Fits the naturally aspirated M273 V8 in the E550, CLS550, SL550, CLK550, S550, and CL550.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-flow design:\u003c\/strong\u003e reduced exhaust restriction for maximum gains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno-proven power:\u003c\/strong\u003e +38 hp and +39 lb-ft of torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced exhaust tone:\u003c\/strong\u003e deeper, throatier sound under throttle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized piping:\u003c\/strong\u003e wide diameter balancing top-end power and torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal fitment:\u003c\/strong\u003e works with both LHD and RHD models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-inch outlet pipe:\u003c\/strong\u003e large outlet for maximum flow and easy exhaust connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment Compatibility\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSL550\u003c\/td\u003e\n\u003ctd\u003eM273 V8\u003c\/td\u003e\n\u003ctd\u003e2007–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCLS550\u003c\/td\u003e\n\u003ctd\u003eM273 V8\u003c\/td\u003e\n\u003ctd\u003e2007–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCLK550\u003c\/td\u003e\n\u003ctd\u003eM273 V8\u003c\/td\u003e\n\u003ctd\u003e2007–2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eE550\u003c\/td\u003e\n\u003ctd\u003eM273 V8\u003c\/td\u003e\n\u003ctd\u003e2006–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS550\u003c\/td\u003e\n\u003ctd\u003eM273 V8\u003c\/td\u003e\n\u003ctd\u003e2007–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCL550\u003c\/td\u003e\n\u003ctd\u003eM273 V8\u003c\/td\u003e\n\u003ctd\u003e2007–2010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eChoose Your Option\u003c\/h3\u003e\n\u003cp\u003eUse the option selector above:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeaders only:\u003c\/strong\u003e the mid-length headers with mid-pipes, ready to install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeaders + OEM gaskets \u0026amp; studs (+$180):\u003c\/strong\u003e we include fresh OEM exhaust gaskets and studs so you're not chasing down hardware separately mid-install. If you're doing this job once and doing it right, add the gasket set — reusing old gaskets on a header swap is a common source of leaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003eComplete the Build\u003c\/h3\u003e\n\u003cp\u003eHeaders are the single biggest breathing upgrade on the naturally aspirated M273 — but the factory ECU doesn't know they're there. A \u003cstrong\u003ecustom M273 tune adjusts timing and fueling to the improved exhaust flow\u003c\/strong\u003e, squeezing out the rest of the power the headers make possible and sharpening throttle response. Headers deliver on their own; headers plus a tune deliver the full number.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/benzunitedparts.com\/products\/m273-v8-5-5l-custom-ecu-tuning-e550-clk550-cls550-sl550\"\u003eAdd a custom M273 ECU tune →\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eBuilding a full M273 setup? Send us your VIN and goals and we'll map the smartest order.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy from BenzUnited\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTrusted by performance tuners and Mercedes enthusiasts.\u003c\/li\u003e\n\u003cli\u003eFast shipping, responsive support, and fitment help.\u003c\/li\u003e\n\u003cli\u003eRare and high-performance Mercedes parts sourced with precision.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003eBuy With Confidence\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree U.S. shipping\u003c\/strong\u003e with tracking on all orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment confirmed before you buy:\u003c\/strong\u003e not sure it fits your exact car? Send us your VIN and we'll verify before you order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercedes specialists:\u003c\/strong\u003e we focus exclusively on Mercedes platforms — you're working with people who know the M273 inside out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal support:\u003c\/strong\u003e questions before or after purchase go straight to us, not a call center.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"mailto:benzunitedparts@gmail.com?subject=M273%20Headers%20Fitment%20Help\"\u003eConfirm fitment or ask a question →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eFor off-road and racing use only. Not legal for highway use in emissions-restricted states. Professional installation with welding is required. Ships within 1–2 business days, packaged securely.\u003c\/em\u003e\u003c\/p\u003e","brand":"BenzUnited Parts","offers":[{"title":"No","offer_id":47103936168111,"sku":"HDR-M273-NOGASKET","price":949.0,"currency_code":"USD","in_stock":true},{"title":"Yes","offer_id":47103936200879,"sku":"HDR-M273-WITHGASKET","price":1129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/mercedes-m273-performance-headers-e550-cls550-sl550.png?v=1756775561"},{"product_id":"k-n-high-flow-engine-air-filter-for-mercedes-e350-c350-c300-c320-33-2181","title":"Set of 2 K\u0026N Air Filters – Mercedes M273 V8 E550 CLS550 S550 CLK550","description":"\u003cdiv style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #333;\"\u003e\n\u003cp\u003eThis isn’t just a replacement — it’s a proven performance upgrade for Mercedes-Benz M273 V8 engines. Each vehicle requires two filters, and this complete kit includes both K\u0026amp;N 33-2181 filters needed for a full replacement. Designed to increase airflow, restore lost horsepower, and sharpen throttle response, they also provide superior filtration and lifetime reusability.\u003c\/p\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003e📦 Mercedes M273 Vehicle Compatibility\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eKit includes 2 filters — complete replacement for one vehicle.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px;\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"padding: 10px;\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"padding: 10px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px;\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2006–2011\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eE550\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eM273 V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2007–2011\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCLS550\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eM273 V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2007–2013\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eS550\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eM273 V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2007–2012\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eSL550\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eM273 V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2007–2010\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCL550\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eM273 V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2007–2009\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCLK550\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eM273 V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr style=\"margin: 20px 0;\"\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003e💡 Why Upgrade to a K\u0026amp;N 33-2181 Air Filter Kit for Mercedes M273 V8?\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Boost:\u003c\/strong\u003e Up to +10 hp with both filters installed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrottle Response:\u003c\/strong\u003e Quicker acceleration and stronger midrange pull\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime Value:\u003c\/strong\u003e Washable, reusable, backed by K\u0026amp;N’s Million Mile Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance Interval:\u003c\/strong\u003e Clean approximately every 15,000 miles under normal driving\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Replacement:\u003c\/strong\u003e No modifications required; works seamlessly with the factory ram-air box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top: 10px;\"\u003eWant to know why drop-in filters outperform aftermarket cone setups? Read our full guide: \u003ca style=\"color: #007bff; text-decoration: underline; font-weight: bold;\" href=\"https:\/\/benzunitedparts.com\/blogs\/news\/mercedes-intake-guide-why-drop-in-filters-beat-cone-intakes\"\u003eMercedes Intake Guide: Why Drop-In Filters Beat Cone Intakes\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr style=\"margin: 20px 0;\"\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003e🔧 Easy Installation\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePull off the front engine cover.\u003c\/li\u003e\n\u003cli\u003eRemove the front section of the intake housing.\u003c\/li\u003e\n\u003cli\u003eRelease the metal latch at the back where the airbox connects to the throttle body.\u003c\/li\u003e\n\u003cli\u003eFlip the housing upside down and remove the Torx screws.\u003c\/li\u003e\n\u003cli\u003eSwap in both new K\u0026amp;N 33-2181 filters (arrows facing airflow).\u003c\/li\u003e\n\u003cli\u003eReassemble and snap the housing + cover back in place.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eTime:\u003c\/strong\u003e ~15 minutes with a Torx driver.\u003c\/p\u003e\n\u003chr style=\"margin: 20px 0;\"\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003e⚙️ Mercedes M273 Performance Upgrade Path\u003c\/h3\u003e\n\u003cp\u003eThe K\u0026amp;N filter kit is the \u003cstrong\u003efoundation of a complete breathing package\u003c\/strong\u003e for your M273-powered Mercedes. Pair it with the following upgrades for maximum results:\u003c\/p\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 20px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eX-Pipe Exhaust:\u003c\/strong\u003e Improves exhaust scavenging, midrange torque, and high-RPM horsepower while removing restrictive secondary cats (No CEL).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid-Length Headers:\u003c\/strong\u003e Balanced high-flow design boosts horsepower above 4,000 rpm without killing low-end torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eECU Tune:\u003c\/strong\u003e Optimizes fueling and ignition to unlock the combined intake\/exhaust gains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin: 25px 0; text-align: center;\"\u003e\n\u003ca style=\"display: inline-block; background-color: #000; color: #fff; padding: 12px 25px; text-decoration: none; font-weight: bold; border-radius: 5px; margin: 8px;\" href=\"https:\/\/benzunitedparts.com\/products\/2-25-x-pipe-for-mercedes-na-replacement-for-secondary-cats\"\u003e🔧 Shop Mercedes M273 X-Pipe\u003c\/a\u003e \u003ca style=\"display: inline-block; background-color: #000; color: #fff; padding: 12px 25px; text-decoration: none; font-weight: bold; border-radius: 5px; margin: 8px;\" href=\"https:\/\/benzunitedparts.com\/products\/clk550-e550-cls550-sl550-mid-length-performance-headers-m273-v8-na\"\u003e🔥 Shop Mercedes M273 Mid-Length Headers\u003c\/a\u003e \u003ca style=\"display: inline-block; background-color: #000; color: #fff; padding: 12px 25px; text-decoration: none; font-weight: bold; border-radius: 5px; margin: 8px;\" href=\"https:\/\/benzunitedparts.com\/products\/m273-v8-5-5l-custom-ecu-tuning-e550-clk550-cls550-sl550\"\u003e⚡ Shop Mercedes M273 ECU Tune\u003c\/a\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin: 20px 0;\"\u003e\n\u003ch3 style=\"margin-bottom: 8px;\"\u003e🚀 Why M273 Owners Choose This Kit\u003c\/h3\u003e\n\u003cp\u003eIt’s more than a replacement — it’s the \u003cstrong\u003eentry point into performance mods\u003c\/strong\u003e for the Mercedes M273 engine. Start with airflow, then add exhaust flow and tuning for a complete transformation.\u003c\/p\u003e\n\u003cp style=\"color: red; font-weight: bold; margin-top: 15px; text-align: center;\"\u003e⚠️ Kit includes 2 filters — the complete upgrade for one Mercedes M273 V8 vehicle.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; color: #666; margin-top: 20px; text-align: center;\"\u003e📦 In stock and ships within 1 business day — backed by K\u0026amp;N’s Million Mile Warranty.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":45777406394543,"sku":null,"price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/81JTe11pXwL._AC_SL1500.jpg?v=1755076379"},{"product_id":"2-25-x-pipe-for-mercedes-na-replacement-for-secondary-cats","title":"M273 5.5L V8 X-Pipe • E550 • CLS550 • SL550 • S550 • CL550 (2006–2011)","description":"\u003cdiv style=\"max-width: 900px; margin: auto; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; padding: 20px; line-height: 1.7; color: #222;\"\u003e\n\u003cp style=\"text-align: center; font-size: 18px; color: #1e40af; font-weight: 600;\"\u003eM273 5.5L V8 X-Pipe • E550 • CLS550 • SL550 • S550 • CL550 (2006–2011)\u003c\/p\u003e\n\u003cp style=\"text-align: center; background: #eff6ff; padding: 14px; border-radius: 10px; font-weight: 600;\"\u003e2.25\" Dual High-Flow X-Pipe • Perfect for M273 Performance Upgrades\u003c\/p\u003e\n\u003cp\u003eShift your M273 5.5L V8 power band higher and feel stronger torque at the top end. This high-flow X-pipe is engineered specifically for M273 performance builds — reducing rasp, balancing exhaust pulses, and delivering noticeably more torque and power at higher RPMs when paired with headers or tuning.\u003c\/p\u003e\n\u003ch2 style=\"margin: 26px 0 12px;\"\u003eWhy M273 Owners Choose This X-Pipe\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eForward-placed X-merge creates a clear power band shift with stronger pull at higher RPMs on M273 engines\u003c\/li\u003e\n\u003cli\u003eDual 2.25\" I.D. optimized for M273 naturally aspirated and supercharged builds\u003c\/li\u003e\n\u003cli\u003e409 stainless construction — weld-friendly and heat-cycle tough\u003c\/li\u003e\n\u003cli\u003eMore usable torque and extended power at higher RPMs on tuned M273 5.5L V8s\u003c\/li\u003e\n\u003cli\u003ePerfect complement to M273 ECU tunes, headers, and intake upgrades for peak top-end performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin: 26px 0 12px;\"\u003eM273 Compatibility\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #1e40af; color: white;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eE550 • CLS550 • SL550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2007–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS550 • CL550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2007–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eCLK550 • R350 • ML550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2006–2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"text-align: center; margin: 30px 0;\"\u003e\u003ca href=\"#\" style=\"background: #1e40af; color: white; padding: 14px 32px; font-size: 17px; font-weight: bold; border-radius: 8px; text-decoration: none; margin: 8px;\"\u003eAdd M273 X-Pipe to Cart\u003c\/a\u003e\u003c\/div\u003e\n\u003cp style=\"font-size: 15px; margin: 20px 0px; text-align: left;\"\u003e\u003cstrong\u003eUpgrade Bundles:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 15px; margin: 20px 0px; text-align: left;\"\u003e\u003ca href=\"#\" style=\"color: #1e40af; font-weight: bold;\"\u003eStage 1+ Bundle\u003c\/a\u003e (Filters + X-Pipe + Tune)\u003c\/p\u003e\n\u003cp style=\"font-size: 15px; margin: 20px 0px; text-align: left;\"\u003e\u003ca href=\"#\" style=\"color: #1e40af; font-weight: bold;\"\u003eStage 2+ Bundle\u003c\/a\u003e (Headers + Filters + X-Pipe + Tune)\u003c\/p\u003e\n\u003cp style=\"text-align: center; font-size: 13px; color: #666;\"\u003eNeed help with your build? Message us your vehicle — we’ll recommend the perfect setup.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":45808945037487,"sku":null,"price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/universal-exhaust-x-pipe-2-25in-dual-to-dual-hero.jpg?v=1755922127"},{"product_id":"afe-power-magnum-flow-pro-dry-s-air-filter-kit-mercedes-m273-v8-e550-clk550-s550-qty-2","title":"aFe Power Pro DRY S Air Filter Set for Mercedes M273 5.5L V8 E550 \/ CLK550","description":"\u003cdiv style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #222; max-width: 900px; margin: 0 auto; padding: 20px;\"\u003e\n\u003c!-- HERO --\u003e\n\u003cdiv style=\"background: #111; border-radius: 12px; padding: 16px 18px; margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0; text-align: center; color: #ffcc00; font-size: 14px;\"\u003eWashable \u0026amp; reusable • High-flow synthetic media • OEM-style fit\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- WHAT YOU GET --\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 12px; padding: 14px; margin-bottom: 16px;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px; font-size: 16px;\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul style=\"margin: 0; padding-left: 18px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 ×\u003c\/strong\u003e aFe Power Magnum FLOW Pro DRY S air filters (Pair)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- BENEFITS --\u003e\n\u003cdiv style=\"display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px;\"\u003e\n\u003cdiv style=\"flex: 1 1 240px; background: #111; color: #fff; border-radius: 12px; padding: 14px; border: 1px solid #2a2a2a;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #ffcc00; margin-bottom: 6px;\"\u003eOil-Free Pro DRY S Media\u003c\/div\u003e\n\u003cdiv style=\"color: #d1d5db; font-size: 14px;\"\u003eHigh-flow synthetic, oil-free filter media that delivers strong airflow without the mess of oiling.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 240px; background: #111; color: #fff; border-radius: 12px; padding: 14px; border: 1px solid #2a2a2a;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #ffcc00; margin-bottom: 6px;\"\u003eHigh-Flow Performance\u003c\/div\u003e\n\u003cdiv style=\"color: #d1d5db; font-size: 14px;\"\u003eImproved airflow potential for better throttle response and more efficient engine breathing, without added noise or changes to daily drivability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 240px; background: #111; color: #fff; border-radius: 12px; padding: 14px; border: 1px solid #2a2a2a;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #ffcc00; margin-bottom: 6px;\"\u003eWashable \u0026amp; Reusable\u003c\/div\u003e\n\u003cdiv style=\"color: #d1d5db; font-size: 14px;\"\u003eDesigned to be cleaned and reused—long-term value compared to disposable paper filters, with consistent performance between services.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPATIBILITY --\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 16px; margin-bottom: 18px;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px; font-size: 16px;\"\u003eCompatibility (Mercedes M273 V8)\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px; color: #4b5563; font-size: 14px;\"\u003eCommon applications include select models equipped with the \u003cstrong\u003eM273 5.5L V8\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; color: #111; font-size: 14px;\"\u003e\n\u003cli\u003eE550\u003c\/li\u003e\n\u003cli\u003eCLK550\u003c\/li\u003e\n\u003cli\u003eCLS550\u003c\/li\u003e\n\u003cli\u003eCL550\u003c\/li\u003e\n\u003cli\u003eS550\u003c\/li\u003e\n\u003cli\u003eR550\u003c\/li\u003e\n\u003cli\u003eSL550\u003c\/li\u003e\n\u003cli\u003eGL550\u003c\/li\u003e\n\u003cli\u003eML550\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 10px 0 0; font-size: 13px; color: #6b7280;\"\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Please confirm your engine (M273) and compare your existing filter shape or part numbers before ordering. If you’re unsure, message us with your year, model, trim, or VIN and we’ll help confirm fitment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- WHO THIS IS FOR --\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":46540702089391,"sku":null,"price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/afe-magnum-flow-pro-dry-s-air-filters-mercedes-m273-v8.webp?v=1770197887"},{"product_id":"afe-power-pro-dry-s-air-filter-set-for-mercedes-m273-5-5l-v8-e550-clk550-copy","title":"aFe Power Magnum FLOW Pro 5R Air Filter Set for Mercedes M273 5.5L V8 E550 \/ CLK550","description":"\u003cdiv style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #222; max-width: 900px; margin: 0 auto; padding: 20px;\"\u003e\n\u003c!-- HERO --\u003e\n\u003cdiv style=\"background: #111; border-radius: 12px; padding: 16px 18px; margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0; text-align: center; color: #ffcc00; font-size: 14px;\"\u003eWashable \u0026amp; reusable • Pro 5R oiled cotton media • OEM-style fit\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- WHAT YOU GET --\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 12px; padding: 14px; margin-bottom: 16px;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px; font-size: 16px;\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul style=\"margin: 0; padding-left: 18px;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 ×\u003c\/strong\u003e aFe Power Magnum FLOW Pro 5R air filters (Pair)\u003c\/li\u003e\n\u003cli\u003ePart Number: \u003cstrong\u003e30-10189\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- BENEFITS --\u003e\n\u003cdiv style=\"display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px;\"\u003e\n\u003cdiv style=\"flex: 1 1 240px; background: #111; color: #fff; border-radius: 12px; padding: 14px; border: 1px solid #2a2a2a;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #ffcc00; margin-bottom: 6px;\"\u003ePro 5R Oiled Cotton Media\u003c\/div\u003e\n\u003cdiv style=\"color: #d1d5db; font-size: 14px;\"\u003eFive-layer oiled cotton gauze media designed for maximum airflow while maintaining effective filtration.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 240px; background: #111; color: #fff; border-radius: 12px; padding: 14px; border: 1px solid #2a2a2a;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #ffcc00; margin-bottom: 6px;\"\u003eHigh-Flow Performance\u003c\/div\u003e\n\u003cdiv style=\"color: #d1d5db; font-size: 14px;\"\u003eImproved airflow potential for sharper throttle response and more efficient engine breathing, while retaining factory drivability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 240px; background: #111; color: #fff; border-radius: 12px; padding: 14px; border: 1px solid #2a2a2a;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #ffcc00; margin-bottom: 6px;\"\u003eWashable \u0026amp; Reusable\u003c\/div\u003e\n\u003cdiv style=\"color: #d1d5db; font-size: 14px;\"\u003eClean, re-oil, and reuse for long-term value compared to disposable paper filters.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- COMPATIBILITY --\u003e\n\u003cdiv style=\"background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; padding: 16px; margin-bottom: 18px;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px; font-size: 16px;\"\u003eCompatibility (Mercedes M273 V8)\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px; color: #4b5563; font-size: 14px;\"\u003eDesigned for select Mercedes-Benz models equipped with the \u003cstrong\u003eM273 5.5L V8\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; color: #111; font-size: 14px;\"\u003e\n\u003cli\u003eE550\u003c\/li\u003e\n\u003cli\u003eCLK550\u003c\/li\u003e\n\u003cli\u003eCLS550\u003c\/li\u003e\n\u003cli\u003eCL550\u003c\/li\u003e\n\u003cli\u003eS550\u003c\/li\u003e\n\u003cli\u003eR550\u003c\/li\u003e\n\u003cli\u003eSL550\u003c\/li\u003e\n\u003cli\u003eGL550\u003c\/li\u003e\n\u003cli\u003eML550\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin: 10px 0 0; font-size: 13px; color: #6b7280;\"\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Please confirm your engine (M273) and compare your existing filter shape or part numbers before ordering. If you’re unsure, message us with your year, model, trim, or VIN and we’ll help confirm fitment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":46551881318575,"sku":null,"price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/afe-pro-5r-air-filter-mercedes-m273-v8-30-10189.webp?v=1770722563"},{"product_id":"custom-ecu-tune-for-mercedes-m273-v8-e550-cls550-cl550-s550-sl550","title":"Custom M273 5.5L V8 ECU Tune + Bolt-On Upgrades for Mercedes E550, CLS550, S550, SL550 \u0026 CLK550","description":"\u003cdiv style=\"font-family: Arial, sans-serif; color: #333; line-height: 1.65; padding: 25px; max-width: 900px; margin: auto;\"\u003e\n\u003cp style=\"text-align: center; font-size: 17px;\"\u003eSharper throttle, stronger mid-range torque, and a much more responsive 5.5L V8 — all while keeping factory reliability and smoothness. Perfect for owners running downpipes, X-pipe, or headers.\u003c\/p\u003e\n\u003c!-- Variant Selector --\u003e\n\u003cdiv style=\"background: #f8f9fa; padding: 20px; border: 2px solid #004aad; border-radius: 10px; margin: 25px 0;\"\u003e\n\u003cstrong\u003eBuild Your Perfect Setup:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e⬜ + Drop-In Filters\u003cbr\u003e⬜ + High-Flow X-Pipe\u003cbr\u003e⬜ + Mid-Length Headers\u003c\/div\u003e\n\u003ch2 style=\"color: #004aad;\"\u003eWhat You Can Expect\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUp to +40 HP \/ +37 lb-ft on premium fuel\u003c\/li\u003e\n\u003cli\u003eSharpened throttle with zero delay\u003c\/li\u003e\n\u003cli\u003eStronger mid-range torque for confident acceleration\u003c\/li\u003e\n\u003cli\u003eSmoother, more refined power delivery\u003c\/li\u003e\n\u003cli\u003eAll factory safety systems fully retained\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #004aad;\"\u003eExact Compatibility\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin: 15px 0;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #004aad; color: white;\"\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eEngine\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding: 10px; border: 1px solid #ddd;\"\u003eBody Styles\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eE550 \/ CLS550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eM273 5.5L V8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2006–2011\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eSedan \/ Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eS550 \/ CL550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eM273 5.5L V8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2006–2011\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eSedan \/ Coupe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eSL550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eM273 5.5L V8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2006–2011\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eRoadster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eCLK550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eM273 5.5L V8\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003e2006–2010\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #ddd;\"\u003eCoupe \/ Cabriolet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"color: #004aad; margin-top: 35px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer;\"\u003eIs this tune safe for my engine?\u003c\/summary\u003e\n\u003cp style=\"margin: 8px 0 0 20px; color: #555;\"\u003eYes. All factory safety systems remain active with conservative tuning for long-term reliability.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer;\"\u003eHow long does the process take?\u003c\/summary\u003e\n\u003cp style=\"margin: 8px 0 0 20px; color: #555;\"\u003eTypically 2–4 business days after we receive your stock file.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer;\"\u003eWill it pass emissions?\u003c\/summary\u003e\n\u003cp style=\"margin: 8px 0 0 20px; color: #555;\"\u003eYes. The tune and bolt-ons do not affect emissions — factory cats remain in place.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 12px;\"\u003e\n\u003csummary style=\"font-weight: bold; cursor: pointer;\"\u003eCan I install hardware first and tune later?\u003c\/summary\u003e\n\u003cp style=\"margin: 8px 0 0 20px; color: #555;\"\u003eAbsolutely. The car runs great with the hardware — but you’ll be leaving serious power on the table without the tune.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdiv style=\"text-align: center; margin: 40px 0;\"\u003e\u003ca href=\"#\" style=\"background: #b30000; color: white; padding: 18px 48px; font-size: 20px; font-weight: bold; text-decoration: none; border-radius: 8px;\"\u003e 🛒 Build Your M273 Package \u0026amp; Add to Cart \u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 40px; padding-top: 20px; border-top: 1px solid #ddd; text-align: center; font-size: 14px; color: #666;\"\u003e\n\u003cstrong\u003eBenzUnited Parts • Mercedes Performance \u0026amp; Tuning\u003c\/strong\u003e\u003cbr\u003eFitment Guarantee • 30-Day Easy Returns\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"No \/ No \/ No","offer_id":47164632301743,"sku":null,"price":1200.0,"currency_code":"USD","in_stock":true},{"title":"No \/ No \/ Yes","offer_id":47164634595503,"sku":null,"price":1200.0,"currency_code":"USD","in_stock":true},{"title":"No \/ Yes \/ No","offer_id":47164632334511,"sku":null,"price":1230.0,"currency_code":"USD","in_stock":true},{"title":"No \/ Yes \/ Yes","offer_id":47164634628271,"sku":null,"price":2030.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ No \/ No","offer_id":47164632367279,"sku":null,"price":1330.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ No \/ Yes","offer_id":47164634661039,"sku":null,"price":2130.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Yes \/ No","offer_id":47164632400047,"sku":null,"price":1360.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ Yes \/ Yes","offer_id":47164634693807,"sku":null,"price":2160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/OIP_2.jpg?v=1708324391"}],"url":"https:\/\/benzunitedparts.com\/collections\/m273-5-5l-v8-e550-cls550-s550.oembed","provider":"BenzUnited Parts","version":"1.0","type":"link"}