{"product_id":"national-4359v-engine-crankshaft-seal","title":"National 4359V Engine Crankshaft Seal - Rear","description":"\u003ch2\u003eOverview of National 4359V Engine Crankshaft Seal\u003c\/h2\u003e\u003cp\u003eThe National 4359V engine crankshaft seal is designed to provide reliable sealing performance for a range of GM vehicles including Buick, Chevrolet, and GMC models. Engineered with durable fluoro-elastomer material, this oil seal kit ensures effective containment of engine oil, helping maintain engine integrity and prevent leaks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 3.740 inches (95.000 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 4.540 inches (115.320 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.492 inches (12.500 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Fluoro-elastomer for enhanced chemical and temperature resistance\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple GM makes and models from the 4300 series\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe National 4359V crankshaft seal features precise dimensions to fit housing bores measuring approximately 4.528 inches (115.000 mm) and shafts of 3.740 inches (95.000 mm) diameter. Its fluoro-elastomer construction offers superior resistance to oil, heat, and wear, making it suitable for demanding engine environments. The 0.492-inch thickness provides a robust sealing surface that helps prevent oil leakage around the crankshaft, contributing to engine longevity and performance.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis engine crankshaft seal is compatible with a wide range of General Motors vehicles, including but not limited to:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuick models such as the Regal and Roadmaster\u003c\/li\u003e\n\u003cli\u003eChevrolet trucks and SUVs including C10, C1500, Blazer, and Tahoe\u003c\/li\u003e\n\u003cli\u003eCadillac models like the Brougham and Fleetwood\u003c\/li\u003e\n\u003cli\u003eGMC trucks and SUVs including Sierra, Jimmy, and Yukon\u003c\/li\u003e\n\u003cli\u003eOldsmobile and Pontiac vehicles such as the Cutlass and Grand Prix\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to meet the sealing requirements of these vehicles’ engine crankshafts, ensuring proper fit and function.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the National 4359V Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents oil leaks from the crankshaft area\u003c\/li\u003e\n\u003cli\u003eReduces engine contamination from external debris\u003c\/li\u003e\n\u003cli\u003eMaintains proper oil pressure by sealing the crankshaft housing\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on engine components caused by oil loss\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly engine repairs related to seal failure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National 4359V crankshaft seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal orientation matches the engine manufacturer’s specifications. Lubricate the seal lip lightly with clean engine oil before installation to reduce initial wear. Proper installation will help maintain the seal’s effectiveness and extend service life.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational engine crankshaft seals are manufactured to meet industry standards for durability and performance. The 4359V seal is constructed from high-quality fluoro-elastomer material, providing resistance to heat, oil, and chemicals commonly found in engine environments. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in product reliability.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448197382325,"sku":"BCZK-4359V","price":33.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_4359V_Ang.jpg?v=1774734521","url":"https:\/\/www.partcatalog.com\/products\/national-4359v-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}