{"title":"Mercedes-Benz E550 \/ S550 \/ CLS550 \/ GL550 \/ GLE550 \/ G550 — M278 4.7T V8","description":"\u003cp\u003ePerformance parts for Mercedes-Benz vehicles powered by the M278 4.7L twin-turbo V8 — including the E550 (W212), S550 (W222), CLS550 (C218), GL550\/GLS550 (X166), GLE550 (W166), and G550 (W463). Forged internals, turbo kits, and engine build components from YPG Motorsport.\u003c\/p\u003e","products":[{"product_id":"mercedes-benz-m278-forged-internals-800hp-rated-rods-pistons-ypg-motorsport","title":"Mercedes-Benz M278 Forged Internals — 1,500HP+ Rated | Rods \u0026 Pistons | YPG Motorsport","description":"\u003cp\u003e\u003cstrong\u003eMercedes-Benz M278 Forged Internals — Rods \u0026amp; Pistons Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Mercedes-Benz M278 4.7L twin-turbo V8 is the workhorse behind the E550, S550, CLS550, GL550, GLE550, GLS550, and G550. While not an AMG engine, the M278 is a popular platform for twin-turbo upgrades and tuning — delivering serious power gains with downpipes, intakes, and ECU calibration. But the factory cast internals become the ceiling at higher power levels.\u003c\/p\u003e\n\u003cp\u003eYPG Motorsport's forged internals kit replaces the factory rods and pistons with \u003cstrong\u003eforged H-beam connecting rods\u003c\/strong\u003e and \u003cstrong\u003eforged aluminum pistons\u003c\/strong\u003e, rated for 1,500HP+ and built to handle aggressive boost and sustained high-RPM use. The go-to upgrade for any M278 owner serious about unlocking the platform's full potential.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e8x Forged H-beam connecting rods (ARP hardware)\u003c\/li\u003e\n\u003cli\u003e8x Forged aluminum pistons with rings and wrist pins\u003c\/li\u003e\n\u003cli\u003eBalanced and matched set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Upgrade\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFactory cast rods and pistons are the failure point at higher power levels\u003c\/li\u003e\n\u003cli\u003eForged components handle higher cylinder pressure and heat\u003c\/li\u003e\n\u003cli\u003eEssential for turbo upgrade builds and aggressive tuning\u003c\/li\u003e\n\u003cli\u003eDrop-in fitment — no block machining required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMercedes-Benz E550 (W212)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz S550 (W222)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz CLS550 (C218)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz GL550 \/ GLS550 (X166)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz GLE550 (W166)\u003c\/li\u003e\n\u003cli\u003eMercedes-Benz G550 (W463)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eProfessional installation required. Contact YPG Motorsport for engine build packages and turbo upgrade kits.\u003c\/em\u003e\u003c\/p\u003e","brand":"YPG Motorsport","offers":[{"title":"Default Title","offer_id":50733639041216,"sku":"YPG-M278-FORGED-INT","price":3999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0084\/7288\/7360\/files\/pistons_clean_a0503766-26e2-48c0-91f0-f1a360084658.png?v=1794196787"}],"url":"https:\/\/ypgmotorsport.com\/collections\/mercedes-benz-e550-s550-cls550-gl550-gle550-g550-m278-4-7t-v8.oembed","provider":"YPG Motorsport","version":"1.0","type":"link"}