{"product_id":"m278-2-piece-billet-aluminum-pulley-set-for-mercedes-e550-cls550","title":"M278 2-Piece Billet Aluminum Pulley Set – E550 \/ CLS550 \/ S550","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\u003ePrecision billet upgrade\u003c\/strong\u003e that reduces belt slip, eliminates noise, and gives smoother, sharper response on every tuned or hard-driven M278.\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 Billet Pulley Set Makes a Real Difference 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✅ Aerospace Billet Aluminum + Hard Anodized\u003c\/strong\u003e\u003cbr\u003eCNC-machined for zero flex and maximum strength under boost.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; background: #f9f9f9; padding: 16px; border-radius: 8px;\"\u003e\n\u003cstrong\u003e✅ Premium Nachi ZZ Bearings\u003c\/strong\u003e\u003cbr\u003eUltra-quiet, high-speed bearings that eliminate belt chirp and last for years.\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px; background: #f9f9f9; padding: 16px; border-radius: 8px;\"\u003e\n\u003cstrong\u003e✅ Perfect Bolt-On Fit\u003c\/strong\u003e\u003cbr\u003eDirect replacement using factory brackets — no modifications, installs in under 60 minutes.\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\u003eSmoother revs and noticeably sharper throttle response\u003c\/li\u003e\n\u003cli\u003eEliminated belt squeal and improved belt tracking under load\u003c\/li\u003e\n\u003cli\u003eBetter consistency when the turbos are spooled on tuned cars\u003c\/li\u003e\n\u003cli\u003eZero vibration even at redline • Made in USA quality you can feel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: center; font-size: 15px; font-style: italic; margin: 20px 0;\"\u003e“The difference in smoothness and belt noise is night and day on my tuned E550. These pulleys are the first thing I recommend after downpipes.” – 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 (Complete 2-Piece 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 Billet Aluminum Pulleys (hard anodized)\u003c\/li\u003e\n\u003cli\u003e✔ High-Speed Nachi ZZ Bearings pre-installed\u003c\/li\u003e\n\u003cli\u003e✔ All necessary stainless hardware + install guide\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 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 \/ 2012–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px;\"\u003eS 550 • CL 550\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eW221 • W222 • C216\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;\"\u003e2013–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 10px;\"\u003eGL \/ GLS 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✅ Confirmed for all M278 4.7L BiTurbo engines • Message 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 under 60 minutes • Bolt-on using factory brackets • No cutting or mods\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 Pulley Set 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":46294269001903,"sku":null,"price":230.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/m278-billet-pulley-set-cnc-performance-upgrade.jpg?v=1763530311","url":"https:\/\/benzunitedparts.com\/products\/m278-2-piece-billet-aluminum-pulley-set-for-mercedes-e550-cls550","provider":"BenzUnited Parts","version":"1.0","type":"link"}