{"product_id":"blow-off-valve-kit-for-mercedes-m278-turbo-protection-upgrade","title":"Turbo Pressure Relief Kit for E550 \u0026 CLS550 | M278 V8 Biturbo","description":"\u003cdiv style=\"max-width: 900px; margin: auto; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; color: #222; line-height: 1.65;\"\u003e\n\u003cp\u003eProtect your turbochargers and upgrade your forced-induction system with the \u003cstrong\u003eTurbo Pressure Relief Kit\u003c\/strong\u003e, engineered specifically for \u003cstrong\u003eMercedes-AMG M278 twin-turbo V8 engines\u003c\/strong\u003e. This precision-designed kit helps prevent \u003cstrong\u003ecompressor surge\u003c\/strong\u003e, reducing stress on turbochargers and supporting long-term reliability—especially on tuned or aggressively driven vehicles.\u003c\/p\u003e\n\u003cp\u003eUnlike factory recirculation systems that can allow pressure backflow during throttle lift, this system safely releases excess charge air, helping protect turbo internals and maintain consistent boost behavior during rapid shifts and spirited driving.\u003c\/p\u003e\n\u003ch3 style=\"margin-top: 22px;\"\u003eKey Features \u0026amp; Engineering Highlights\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide-Mount Design:\u003c\/strong\u003e All current kits feature a \u003cstrong\u003eside-mounted pressure relief valve\u003c\/strong\u003e configuration for improved packaging and consistent operation (not center-mounted).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Turbo Protection:\u003c\/strong\u003e Relieves excess boost pressure to reduce compressor surge and minimize turbocharger stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM278-Specific Design:\u003c\/strong\u003e Optimized for the airflow characteristics and operating demands of the M278 twin-turbo platform.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin-top: 22px;\"\u003eComplete Kit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModified charge pipes\u003c\/li\u003e\n\u003cli\u003eCustom silicone 90° elbow\u003c\/li\u003e\n\u003cli\u003e38mm pressure relief (blow-off) valve\u003c\/li\u003e\n\u003cli\u003eMAP sensor tap\u003c\/li\u003e\n\u003cli\u003eVacuum lines and required installation hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin-top: 22px;\"\u003eFactory Integration\u003c\/h3\u003e\n\u003cp\u003eThis kit is designed to retain the \u003cstrong\u003efactory AMG engine cover\u003c\/strong\u003e. Minor modification to the engine cover mounting bracket is required to ensure proper clearance and fitment.\u003c\/p\u003e\n\u003ch3 style=\"margin-top: 22px;\"\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eApproximate \u003cstrong\u003e2-week preparation time\u003c\/strong\u003e prior to shipping\u003c\/li\u003e\n\u003cli\u003eCutting of the engine cover mounting bracket is required\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for optimal results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin-top: 22px;\"\u003eVehicle Compatibility – M278 Engines\u003c\/h3\u003e\n\u003cp\u003eCompatible with Mercedes-Benz vehicles equipped with the \u003cstrong\u003eM278 twin-turbo V8 engine\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercedes-Benz S550 (2011–2017)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz CL550 (2011–2014)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz CLS550 (2011–2018)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz E550 (2012–2014)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz ML550 (2012–2014)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top: 18px;\"\u003eThis turbo pressure relief kit is a \u003cstrong\u003efunctional performance upgrade\u003c\/strong\u003e designed to support long-term turbocharger reliability and smoother boost transitions on M278-powered vehicles. It is especially beneficial for owners running aftermarket tuning or increased boost pressure.\u003c\/p\u003e\n\u003cp style=\"text-align: center; margin-top: 26px; font-weight: bold;\"\u003eUpgrade with confidence. Protect your turbos. Drive your M278-powered AMG the way it was meant to be driven.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BenzUnited Parts","offers":[{"title":"I'll send in my Original chargepipes after purchase (+ $200)","offer_id":46550103261359,"sku":null,"price":1349.0,"currency_code":"USD","in_stock":true},{"title":"I'll send the Original chargepipes before purchase","offer_id":46550103294127,"sku":null,"price":1149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/8718\/9935\/files\/amg-m157-m278-turbo-pressure-relief-kit-installed-engine-bay.jpg?v=1770660978","url":"https:\/\/benzunitedparts.com\/products\/blow-off-valve-kit-for-mercedes-m278-turbo-protection-upgrade","provider":"BenzUnited Parts","version":"1.0","type":"link"}