{"product_id":"national-9845-engine-crankshaft-seal","title":"National 9845 Engine Crankshaft Seal - Front","description":"\u003ch2\u003eNational 9845 Engine Crankshaft Seal Overview\u003c\/h2\u003e\u003cp\u003eThe National 9845 engine crankshaft seal is designed to provide reliable sealing performance for a variety of GM and other domestic vehicles. Engineered with a fluoro-elastomer material and a clockwise-spiral lip design, this oil seal helps maintain engine integrity by preventing oil leaks around the crankshaft.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.763 inches (44.780 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.416 inches (61.370 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.375 inches (9.530 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Durable fluoro-elastomer for heat and chemical resistance\u003c\/li\u003e\n\u003cli\u003eHelix type: Clockwise-spiral lip design for effective sealing\u003c\/li\u003e\n\u003cli\u003eRedicoat surface treatment for enhanced wear resistance\u003c\/li\u003e\n\u003cli\u003eHousing bore size: 2.409 inches (61.190 mm)\u003c\/li\u003e\n\u003cli\u003eSeries: 9000, Type 47 oil seal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Construction\u003c\/h2\u003e\u003cp\u003eThe National 9845 crankshaft seal features a fluoro-elastomer compound that withstands high temperatures and exposure to engine oils and contaminants. Its clockwise-spiral lip design ensures a tight seal around the crankshaft, reducing the risk of oil leakage. The seal’s redicoat treatment improves durability and wear resistance, extending service life. With precise dimensions including a 1.763-inch inside diameter and 2.416-inch outside diameter, this seal fits securely within the housing bore of 2.409 inches, ensuring proper installation and function.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis engine crankshaft seal is compatible with a wide range of vehicles from Buick, Cadillac, Chevrolet, GMC, Isuzu, Jeep, Oldsmobile, Pontiac, and Saturn. It fits models such as the Chevrolet Camaro, Silverado (C1500, C2500, C3500), GMC Sierra, Jeep Cherokee, Pontiac Bonneville, Buick LeSabre, and many others from the late 20th century through early 2000s. The National 9845 is suitable for applications requiring a 47-type oil seal with the specified dimensions.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the National 9845 Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks around the engine crankshaft\u003c\/li\u003e\n\u003cli\u003eReduces contamination ingress into the engine\u003c\/li\u003e\n\u003cli\u003eMaintains engine oil pressure and cleanliness\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on crankshaft and bearing surfaces\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. Verify the seal orientation matches the clockwise-spiral lip design for optimal sealing. Use appropriate tools to press the seal evenly into the housing bore without damaging the lip or seal body. Lubricate the seal lip lightly with clean engine oil to reduce initial wear during startup. Check for proper fitment with the vehicle’s specific crankshaft diameter and housing bore dimensions.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational engine seals are manufactured to meet industry standards for durability and performance. The 9845 seal undergoes rigorous quality control to ensure dimensional accuracy and material integrity. This product includes a limited warranty against defects in materials and workmanship, providing confidence in its reliability for engine sealing applications.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448249450677,"sku":"BCZK-9845","price":16.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_9845_Fro.jpg?v=1774734562","url":"https:\/\/www.partcatalog.com\/products\/national-9845-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}