{"product_id":"elring-648-370-engine-cylinder-head-bolt-set","title":"Elring 648.370 Engine Cylinder Head Bolt Set","description":"\u003ch2\u003eElring Cylinder Head Bolt Set for Mercedes-Benz\u003c\/h2\u003e\u003cp\u003eRestore proper cylinder head clamping with the Elring 648.370 engine cylinder head bolt set. This hardware is built for Mercedes-Benz applications that require an M11 x 1.5 x 173 mm male star bolt design and precise engine assembly fitment.\u003c\/p\u003e\u003cp\u003eUse this Elring cylinder head bolt set when servicing Mercedes-Benz GLE63 AMG, GLS63 AMG, S63 AMG, SL500, and other listed models that call for this exact fastener specification.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Elring\u003c\/li\u003e\n\u003cli\u003ePart number: 648.370\u003c\/li\u003e\n\u003cli\u003eEngine cylinder head bolt set for Mercedes-Benz engine hardware service\u003c\/li\u003e\n\u003cli\u003eMale star bolt head \/ nut design for proper tool engagement\u003c\/li\u003e\n\u003cli\u003eThread size: M11 x 1.5 x 173 mm\u003c\/li\u003e\n\u003cli\u003eEngineered for applications that require exact bolt length and pitch matching\u003c\/li\u003e\n\u003cli\u003eCross-reference: 480602, V30-3962\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe Elring 648.370 cylinder head bolt set is specified for a wide range of Mercedes-Benz V8 and AMG applications, including Mercedes-Benz E500, E550, G63 AMG, GL550, GLS550, S550, S63 AMG, SL550, and related models. Accurate head bolt dimensions matter during cylinder head service because thread size, pitch, length, and head design must match the engine’s requirements for correct assembly.\u003c\/p\u003e\u003cp\u003eThis part number is listed for 2011-2020 Mercedes-Benz applications, with fitment varying by model and year. Confirm the exact vehicle and engine specification before installation, especially on Mercedes-Benz GLE63 AMG, GLS63 AMG, and S63 AMG platforms where multiple configurations exist across model years.\u003c\/p\u003e\u003ch2\u003eWhat This Part Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCylinder head reassembly after head gasket service\u003c\/li\u003e\n\u003cli\u003eReplacement of stretched or torque-to-yield head bolts\u003c\/li\u003e\n\u003cli\u003eFastener mismatch during Mercedes-Benz engine repair\u003c\/li\u003e\n\u003cli\u003eImproper clamping force from worn or incorrect hardware\u003c\/li\u003e\n\u003cli\u003eFitment issues caused by incorrect thread pitch or bolt length\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the engine code, bolt length, thread size, and head design before installation. Clean the threaded holes thoroughly and follow the factory tightening sequence and torque specifications for the specific Mercedes-Benz engine. Because this is critical engine hardware, compare the removed fasteners to the new bolts before assembly. Fits 2016-2020 Mercedes-Benz GLE63 AMG, N\/A. Fits 2016-2019 Mercedes-Benz GLE63 AMG S, N\/A. Fits 2017-2019 Mercedes-Benz GLS63 AMG, N\/A. Fits 2019 Mercedes-Benz S560, N\/A. Fits 2019 Mercedes-Benz S63 AMG, N\/A. Fits 2011-2017 Mercedes-Benz S63 AMG, N\/A. Fits 2013-2019 Mercedes-Benz SL500, N\/A. Fits 2013-2019 Mercedes-Benz SL63 AMG, N\/A. Fits 2012-2018 Mercedes-Benz CLS500, N\/A. Fits 2012-2018 Mercedes-Benz CLS550, N\/A. Fits 2014-2018 Mercedes-Benz CLS63 AMG S, N\/A. Fits 2013-2018 Mercedes-Benz G63 AMG, N\/A. Fits 2017-2018 Mercedes-Benz GLS550, N\/A. Fits 2017-2018 Mercedes-Benz S500, N\/A. Fits 2015 Mercedes-Benz S500, N\/A. Fits 2017-2018 Mercedes-Benz S500L, N\/A. Fits 2013-2018 Mercedes-Benz SL550, N\/A. Fits 2012-2017 Mercedes-Benz E500, N\/A. Fits 2012-2017 Mercedes-Benz E550, N\/A. Fits 2017 Mercedes-Benz GLS500, N\/A. Fits 2017 Mercedes-Benz Maybach S550, N\/A. Fits 2016-2017 Mercedes-Benz Maybach S600, N\/A. Fits 2012-2017 Mercedes-Benz S550, N\/A. Fits 2016-2017 Mercedes-Benz S63L AMG, N\/A. Fits 2012-2016 Mercedes-Benz E63 AMG, N\/A. Fits 2014-2016 Mercedes-Benz E63 AMG S, N\/A. Fits 2013-2016 Mercedes-Benz GL550, N\/A. Fits 2013-2016 Mercedes-Benz GL63 AMG, N\/A. Fits 2016 Mercedes-Benz GLE500, N\/A. Fits 2016 Mercedes-Benz S500, N\/A. Fits 2013-2014 Mercedes-Benz S500, N\/A. Fits 2012-2016 Mercedes-Benz SLK55 AMG, N\/A. Fits 2012-2015 Mercedes-Benz GL500, N\/A. Fits 2012-2015 Mercedes-Benz ML500, N\/A. Fits 2012-2015 Mercedes-Benz ML550, N\/A. Fits 2012-2015 Mercedes-Benz ML63 AMG, N\/A. Fits 2011-2014 Mercedes-Benz CL550, N\/A. Fits 2011-2014 Mercedes-Benz CL63 AMG, N\/A. Fits 2012-2014 Mercedes-Benz CLS63 AMG, N\/A. Fits 2013-2014 Mercedes-Benz GL450, N\/A. Fits 2013 Mercedes-Benz CL500, N\/A.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eElring is a recognized engine sealing and hardware brand used in professional repair environments. Part number 648.370 follows the listed OE-style dimensions and application data for Mercedes-Benz engine service.\u003c\/p\u003e","brand":"Elring","offers":[{"title":"Default Title","offer_id":52844481544373,"sku":"DTWD-648.370","price":88.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/EL_648370_Fro.jpg?v=1784783742","url":"https:\/\/www.partcatalog.com\/products\/elring-648-370-engine-cylinder-head-bolt-set","provider":"PartCatalog","version":"1.0","type":"link"}