{"product_id":"m278-mercedes-intake-spacer-kit-set-of-k-n-drop-in-performance-air-filters-4-7l-v8-bi-turbo","title":"M278 Mercedes Intake Spacer Kit + Set of K\u0026N Drop-in Performance Air Filters (4.7L V8 Bi-Turbo)","description":"\u003cdiv style=\"max-width: 920px; margin: 0 auto; font-family: Arial, Helvetica, sans-serif; line-height: 1.65; color: #222; font-size: 16px; background: #fff;\"\u003e\n\u003c!-- HERO \/ HOOK --\u003e\n\u003cp style=\"text-align: center; background: #f8f8f8; padding: 14px; border-radius: 8px; font-size: 17px;\"\u003e\u003cstrong\u003eThe ultimate OEM+ intake upgrade\u003c\/strong\u003e — K\u0026amp;N high-flow filters + precision airbox spacers for maximum throttle sharpness and mid-range power.\u003c\/p\u003e\n\u003chr style=\"border: none; height: 2px; background: linear-gradient(to right, #eee, #d32f2f, #eee); margin: 25px 0;\"\u003e\n\u003c!-- WHY THIS KIT WORKS --\u003e\n\u003ch2 style=\"color: #000; text-align: center; font-size: 26px; margin: 25px 0 15px;\"\u003eWhy This K\u0026amp;N + Spacer Combo Crushes It on the M278\u003c\/h2\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 15px; justify-content: center;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; background: #f9f9f9; padding: 16px; border-radius: 8px;\"\u003e\n\u003cstrong\u003e✅ Airbox Spacers (Left + Right)\u003c\/strong\u003e\u003cbr\u003eRaises the filter sealing plane for smoother, higher-volume airflow into the MAF housing.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; background: #f9f9f9; padding: 16px; border-radius: 8px;\"\u003e\n\u003cstrong\u003e✅ K\u0026amp;N 33-2474 Performance Filters\u003c\/strong\u003e\u003cbr\u003eLegendary oiled cotton media + Million Mile Warranty® — proven HP gains, washable, CARB legal, no tuning needed.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; background: #f9f9f9; padding: 16px; border-radius: 8px;\"\u003e\n\u003cstrong\u003e✅ Factory Airbox Retained\u003c\/strong\u003e\u003cbr\u003eKeeps perfect cold-air routing \u0026amp; heat shields — zero heat-soak, zero MAF issues.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin: 28px 0 12px; color: #d32f2f; text-align: center;\"\u003eReal-World Results Owners Report\u003c\/h3\u003e\n\u003cul style=\"font-size: 16.5px; max-width: 680px; margin: 0 auto;\"\u003e\n\u003cli\u003eCrispier throttle tip-in and noticeably stronger mid-range pull\u003c\/li\u003e\n\u003cli\u003eBetter power consistency on hot days and repeated pulls\u003c\/li\u003e\n\u003cli\u003ePerfect headroom for headers, downpipes, tune, or E85\u003c\/li\u003e\n\u003cli\u003eZero check-engine lights • Fully reversible • No ECU retune\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: center; font-size: 15px; font-style: italic; margin: 20px 0;\"\u003e“K\u0026amp;N filters + spacers on my E550 with downpipes = night and day difference. Throttle is razor sharp and it pulls way harder now.” – Alex R., 2015 CLS550 • 512 whp\u003c\/p\u003e\n\u003c!-- WHAT'S INCLUDED --\u003e\n\u003ch3 style=\"margin-top: 30px; text-align: center;\"\u003eWhat You Get (Full Combo Kit)\u003c\/h3\u003e\n\u003cul style=\"text-align: center; list-style: none; padding: 0; font-size: 17px;\"\u003e\n\u003cli\u003e✔ 2 × Precision CNC-machined airbox spacers (left + right)\u003c\/li\u003e\n\u003cli\u003e✔ 2 × K\u0026amp;N 33-2474 High-Flow Performance Air Filters (pre-oiled)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- FITMENT --\u003e\n\u003ch3 style=\"margin-top: 28px; color: #000; text-align: center;\"\u003eFits These M278 4.7L BiTurbo V8 Models\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px; background: #f9f9f9;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #222; color: #fff;\"\u003e\n\u003cth style=\"padding: 12px; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"padding: 12px; text-align: left;\"\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eE 550 • CLS 550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eW212 \/ C218\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e2012–2016\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px;\"\u003eS 550 \/ S 560 • CL 550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eW221 • W222 • C216 • C217 • A217\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e2011–2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eSL 550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eR231\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e2013–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px;\"\u003eGL \/ GLS 450 • 550 • ML \/ GLE 550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eX166 • W166\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e2012–2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 13px; text-align: center; color: #666; margin: 8px 0 0;\"\u003e✅ Always verify M278 engine code • Message me if unsure\u003c\/p\u003e\n\u003c!-- INSTALL + CTA --\u003e\n\u003cdiv style=\"text-align: center; margin: 32px 0 20px;\"\u003e\n\u003cp style=\"font-size: 17px;\"\u003e\u003cstrong\u003eInstall in ~20 minutes • No tools beyond a 10mm socket • Fully reversible\u003c\/strong\u003e\u003c\/p\u003e\n\u003ca href=\"#\" style=\"background: #d32f2f; color: #fff; padding: 16px 40px; font-size: 19px; font-weight: bold; text-decoration: none; border-radius: 6px; display: inline-block; margin: 12px 8px; box-shadow: 0 3px 8px rgba(211,47,47,0.3);\"\u003e 🔥 Add Combo Kit to Cart – Ships Same Day \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c!-- CLOSING --\u003e\n\u003cp style=\"text-align: center; margin-top: 25px; font-size: 13px; color: #777;\"\u003eBenzUnited Parts • Mercedes Performance Specialist • Burbank, CA\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"Default Title","offer_id":47117775863983,"sku":null,"price":285.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/m278-k_n-33-2474-filters-airbox-spacers-studio-product-shot.jpg?v=1782474993","url":"https:\/\/benzunitedparts.com\/products\/m278-mercedes-intake-spacer-kit-set-of-k-n-drop-in-performance-air-filters-4-7l-v8-bi-turbo","provider":"BenzUnited Parts","version":"1.0","type":"link"}