{"product_id":"national-710288-engine-crankshaft-seal","title":"National 710288 Engine Crankshaft Seal - Rear","description":"\u003ch2\u003eOverview of National Engine Crankshaft Seal 710288\u003c\/h2\u003e\u003cp\u003eThe National 710288 engine crankshaft seal is designed for precise fitment and reliable sealing in various Mercedes-Benz models. Engineered with fluoro-elastomer material and a counter-clockwise spiral lip design, this oil seal ensures effective protection against oil leaks and contaminants.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 3.661 inches (93.000 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 4.501 inches (114.330 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.512 inches (13.000 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Durable fluoro-elastomer for high resistance\u003c\/li\u003e\n\u003cli\u003eHelix type: Counter-clockwise spiral lip design for enhanced sealing\u003c\/li\u003e\n\u003cli\u003eCompatible housing bore: 4.488 inches (114.000 mm)\u003c\/li\u003e\n\u003cli\u003ePart number: 710288, Series 710200\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis National engine crankshaft seal (part number 710288) is constructed from fluoro-elastomer, a material known for its resistance to heat, oil, and chemicals, making it suitable for demanding engine environments. The seal features a counter-clockwise spiral lip design that improves sealing efficiency by maintaining consistent contact with the crankshaft, reducing the risk of oil leakage. With an inside diameter of 3.661 inches and an outside diameter of 4.501 inches, it fits precisely into the housing bore of 4.488 inches, ensuring a secure installation. The 0.512-inch thickness provides durability and stability during engine operation.\u003c\/p\u003e\u003ch2\u003eCompatible Mercedes-Benz Models\u003c\/h2\u003e\u003cp\u003eThis crankshaft seal is compatible with a wide range of Mercedes-Benz vehicles, including but not limited to the 190E, 260E, 300CE, 300D, 300E, 300SD, 300SDL, 300SE, 300SEL, 300SL, 300TD, 300TE, 350SD, 350SDL, 380SE, 380SEC, 380SEL, 380SL, 380SLC, 400E, 400SE, 400SEL, 420SEL, 500E, 500SEC, 500SEL, 500SL, 560SEC, 560SEL, 560SL, 600SEC, 600SEL, 600SL, C36 AMG, C220, C230, C240, C280, CL500, CL600, E300, E320, E420, E500, G500, ML500, R500, S320, S350, S420, S500, S600, SL320, SL500, SL600, and SLK230 models.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks around the engine crankshaft\u003c\/li\u003e\n\u003cli\u003eProtects engine components from dirt and contaminants\u003c\/li\u003e\n\u003cli\u003eMaintains engine oil pressure and efficiency\u003c\/li\u003e\n\u003cli\u003eReduces wear on crankshaft and surrounding parts\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly engine repairs due to seal failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the crankshaft and housing bore are clean and free of debris before installation. Use appropriate tools to press the seal evenly into the housing bore without damaging the lip or seal surface. Verify the seal orientation matches the counter-clockwise spiral lip design for optimal sealing performance. Lubricate the seal lip lightly with engine oil to reduce initial wear during startup.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational engine crankshaft seals are manufactured to meet OEM specifications for fit, form, and function. The fluoro-elastomer material and precision design contribute to long service life under normal operating conditions. While specific warranty details may vary, National products typically come with a limited warranty against manufacturing defects, ensuring reliability and peace of mind for professional repairs and maintenance.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448340512949,"sku":"BCZK-710288","price":33.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_710288_Fro_28845eeb-028d-4adb-9d98-4ea2b3959af2.jpg?v=1774734735","url":"https:\/\/www.partcatalog.com\/products\/national-710288-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}