{"product_id":"elring-198-770-engine-valve-stem-oil-seal","title":"Elring 198.770 Engine Valve Stem Oil Seal","description":"\u003ch2\u003eReliable Engine Valve Stem Oil Seal for BMW and Rolls-Royce\u003c\/h2\u003e\u003cp\u003eThe Elring 198.770 engine valve stem oil seal is designed to provide precise sealing performance for select BMW and Rolls-Royce models. Manufactured from durable FPM (fluoride rubber), this seal ensures effective oil control and long-lasting reliability under demanding engine conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaterial: FPM (fluoride rubber) for high resistance to heat and chemicals\u003c\/li\u003e\n\u003cli\u003eInside Diameter: 10.0 mm for accurate fitment\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 23.0 mm ensuring proper sealing surface\u003c\/li\u003e\n\u003cli\u003eThickness: 16.0 mm for optimal sealing depth\u003c\/li\u003e\n\u003cli\u003eValve Stem Diameter: 6 mm compatible with specified engine valve stems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Material Benefits\u003c\/h2\u003e\u003cp\u003eThe Elring 198.770 valve stem oil seal is constructed from FPM, a fluoride rubber known for its excellent resistance to high temperatures, oils, and automotive fluids. This material choice helps maintain seal integrity over time, reducing the risk of leaks and engine contamination. The precise dimensions—10.0 mm inside diameter, 23.0 mm outside diameter, and 16.0 mm thickness—are engineered to match the valve stem diameter of 6 mm, ensuring a secure and effective seal within the valve train assembly.\u003c\/p\u003e\u003ch2\u003eCompatible BMW and Rolls-Royce Models\u003c\/h2\u003e\u003cp\u003eThis engine valve stem oil seal is compatible with a range of BMW models including the 545i, 550i, 645Ci, 650i, 745i, 750i, 760i, M5, M6, and their respective variants such as xDrive and Gran Coupe versions. It also fits Rolls-Royce models like the Phantom and SUVs including the X5, X6, and X7. Using the Elring 198.770 ensures proper fitment and performance for these specific vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks around the valve stem area\u003c\/li\u003e\n\u003cli\u003eReduces valve train contamination from oil seepage\u003c\/li\u003e\n\u003cli\u003eMaintains engine oil pressure and efficiency\u003c\/li\u003e\n\u003cli\u003eHelps avoid premature valve guide wear\u003c\/li\u003e\n\u003cli\u003eSupports consistent engine performance and emissions control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Elring 198.770 valve stem oil seal, ensure the valve stem and surrounding surfaces are clean and free of debris. Use appropriate tools to avoid damaging the seal during installation. Verify the seal orientation matches manufacturer specifications to maintain proper sealing function. It is recommended to inspect related valve train components for wear during replacement.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eElring manufactures the 198.770 valve stem oil seal to meet stringent automotive standards, ensuring durability and reliable sealing performance. While specific warranty details are not provided, Elring products are generally backed by quality control processes consistent with OEM requirements.\u003c\/p\u003e","brand":"Elring","offers":[{"title":"Default Title","offer_id":51854245101749,"sku":"DTWD-198.770","price":15.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/EL_198770_Fro.jpg?v=1774730377","url":"https:\/\/www.partcatalog.com\/products\/elring-198-770-engine-valve-stem-oil-seal","provider":"PartCatalog","version":"1.0","type":"link"}