{"product_id":"used-2009-mercedes-benz-s550-cl550-5-5l-v8-engine-m273","title":"Used 2009 Mercedes-Benz S550 \/ CL550 5.5L V8 Engine (M273)","description":"\u003cp data-section-id=\"9vbxgc\" data-start=\"258\" data-end=\"284\"\u003e\u003cstrong\u003e🔧 Part #:\u003c\/strong\u003e 300-85556A\u003cbr\u003e\u003cstrong\u003e📦 Stock #:\u003c\/strong\u003e MM1303\u003c\/p\u003e\n\u003ch3 data-section-id=\"9vbxgc\" data-start=\"258\" data-end=\"284\"\u003e\n\u003cbr\u003eEngine Specifications:\u003c\/h3\u003e\n\u003cp data-start=\"285\" data-end=\"531\"\u003e✅ \u003cstrong data-start=\"287\" data-end=\"314\"\u003e5.5L V8 Gasoline Engine\u003c\/strong\u003e\u003cbr data-start=\"314\" data-end=\"317\"\u003e✅ \u003cstrong data-start=\"319\" data-end=\"350\"\u003eMercedes M273 Engine Family\u003c\/strong\u003e\u003cbr data-start=\"350\" data-end=\"353\"\u003e✅ \u003cstrong data-start=\"355\" data-end=\"381\"\u003eNaturally Aspirated V8\u003c\/strong\u003e\u003cbr data-start=\"381\" data-end=\"384\"\u003e✅ \u003cstrong data-start=\"386\" data-end=\"421\"\u003eAluminum Block \u0026amp; Cylinder Heads\u003c\/strong\u003e\u003cbr data-start=\"421\" data-end=\"424\"\u003e✅ \u003cstrong data-start=\"426\" data-end=\"458\"\u003eDOHC, 32-Valve Configuration\u003c\/strong\u003e\u003cbr data-start=\"458\" data-end=\"461\"\u003e✅ Tested and inspected before removal\u003cbr data-start=\"498\" data-end=\"501\"\u003e✅ Complete long block assembly\u003c\/p\u003e\n\u003ch3 data-section-id=\"y6yw6p\" data-start=\"533\" data-end=\"557\"\u003eCompatible Vehicles:\u003c\/h3\u003e\n\u003cul data-start=\"558\" data-end=\"701\"\u003e\n\u003cli data-section-id=\"19mapx1\" data-start=\"558\" data-end=\"606\"\u003e\n\u003cstrong data-start=\"560\" data-end=\"591\"\u003e2009 Mercedes-Benz S550 AWD\u003c\/strong\u003e (W221 Chassis)\u003c\/li\u003e\n\u003cli data-section-id=\"xv3arq\" data-start=\"607\" data-end=\"655\"\u003e\n\u003cstrong data-start=\"609\" data-end=\"640\"\u003e2009 Mercedes-Benz S550 RWD\u003c\/strong\u003e (W221 Chassis)\u003c\/li\u003e\n\u003cli data-section-id=\"1u7no97\" data-start=\"656\" data-end=\"701\"\u003e\n\u003cstrong data-start=\"658\" data-end=\"686\"\u003e2009 Mercedes-Benz CL550\u003c\/strong\u003e (C216 Chassis)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1inoq8p\" data-start=\"703\" data-end=\"720\"\u003eEngine Types:\u003c\/h3\u003e\n\u003ch4 data-start=\"721\" data-end=\"742\"\u003eType A – 273.968\u003c\/h4\u003e\n\u003cul data-start=\"743\" data-end=\"799\"\u003e\n\u003cli data-section-id=\"g2ae10\" data-start=\"743\" data-end=\"768\"\u003eAssembly: MB 2730104400\u003c\/li\u003e\n\u003cli data-section-id=\"1k2t2x4\" data-start=\"769\" data-end=\"799\"\u003eLower Oil Pan: MB 2730100127\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"801\" data-end=\"822\"\u003eType B – 273.961\u003c\/h4\u003e\n\u003cul data-start=\"823\" data-end=\"879\"\u003e\n\u003cli data-section-id=\"g2aex3\" data-start=\"823\" data-end=\"848\"\u003eAssembly: MB 2730104700\u003c\/li\u003e\n\u003cli data-section-id=\"1k00x6y\" data-start=\"849\" data-end=\"879\"\u003eLower Oil Pan: MB 2730142202\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1s589rv\" data-start=\"881\" data-end=\"902\"\u003eMajor Components:\u003c\/h3\u003e\n\u003cul data-start=\"903\" data-end=\"1227\"\u003e\n\u003cli data-section-id=\"qhi4w\" data-start=\"903\" data-end=\"951\"\u003eCrankshaft: MB 2730300701 (through 10\/02\/2008)\u003c\/li\u003e\n\u003cli data-section-id=\"zmc4wo\" data-start=\"952\" data-end=\"997\"\u003eCrankshaft: MB 2730301201 (from 10\/03\/2008)\u003c\/li\u003e\n\u003cli data-section-id=\"1e3f4wj\" data-start=\"998\" data-end=\"1034\"\u003eRight Cylinder Head: MB 2730104520\u003c\/li\u003e\n\u003cli data-section-id=\"1gmhall\" data-start=\"1035\" data-end=\"1070\"\u003eLeft Cylinder Head: MB 2730104420\u003c\/li\u003e\n\u003cli data-section-id=\"1bwscq6\" data-start=\"1071\" data-end=\"1103\"\u003eIntake Manifold: MB 2731400701\u003c\/li\u003e\n\u003cli data-section-id=\"1s2umgy\" data-start=\"1104\" data-end=\"1133\"\u003eTiming Cover: MB 2720151202\u003c\/li\u003e\n\u003cli data-section-id=\"ey4mdz\" data-start=\"1134\" data-end=\"1161\"\u003eWater Pump: MB 2732000201\u003c\/li\u003e\n\u003cli data-section-id=\"1ysw7v7\" data-start=\"1162\" data-end=\"1196\"\u003eHarmonic Balancer: MB 2730300103\u003c\/li\u003e\n\u003cli data-section-id=\"2nwozs\" data-start=\"1197\" data-end=\"1227\"\u003eUpper Oil Pan: MB 2730100027\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"26zms4\" data-start=\"1229\" data-end=\"1267\"\u003eImportant Interchange Information:\u003c\/h3\u003e\n\u003cp data-start=\"1268\" data-end=\"1333\"\u003e⚠️ \u003cstrong data-start=\"1271\" data-end=\"1333\"\u003eType A (273.968) and Type B (273.961) engines interchange.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1335\" data-end=\"1481\"\u003e⚠️ The primary difference between the two versions is the \u003cstrong data-start=\"1393\" data-end=\"1424\"\u003elower oil pan configuration\u003c\/strong\u003e. Verify your original oil pan style before installation.\u003c\/p\u003e\n\u003cp data-start=\"1483\" data-end=\"1618\"\u003e⚠️ Compare all external accessories, sensors, and emissions equipment prior to installation and transfer original components as needed.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1c1bopo\" data-start=\"1620\" data-end=\"1644\"\u003eWarranty \u0026amp; Shipping:\u003c\/h3\u003e\n\u003cp data-start=\"1645\" data-end=\"1774\"\u003e✅ Warranty Available\u003cbr data-start=\"1665\" data-end=\"1668\"\u003e✅ Nationwide Shipping Available\u003cbr data-start=\"1699\" data-end=\"1702\"\u003e✅ Local Pickup Available\u003cbr data-start=\"1726\" data-end=\"1729\"\u003e✅ Commercial \u0026amp; Residential Delivery Available\u003c\/p\u003e\n\u003ch3 data-section-id=\"fmfggy\" data-start=\"1776\" data-end=\"1805\"\u003eMilford Motors Auto Parts\u003c\/h3\u003e\n\u003cp data-start=\"1806\" data-end=\"1864\"\u003e📍 112 Weaver Rd, West Milford, NJ 07480\u003cbr data-start=\"1846\" data-end=\"1849\"\u003e📞 973-545-2999\u003c\/p\u003e\n\u003cp data-start=\"1866\" data-end=\"2032\"\u003e\u003cstrong data-start=\"1866\" data-end=\"2032\"\u003ePlease call to verify stock, compatibility, mileage, warranty details, and shipping costs before purchasing or visiting.\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"MILFORD MOTORS","offers":[{"title":"Default Title","offer_id":59604080754769,"sku":null,"price":450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8005\/6657\/files\/image_0262e8e0-d6b9-403f-95b5-e79d524046bb.png?v=1780340178","url":"https:\/\/milfordparts.com\/products\/used-2009-mercedes-benz-s550-cl550-5-5l-v8-engine-m273","provider":"MilfordParts","version":"1.0","type":"link"}