{"product_id":"national-710551-engine-crankshaft-seal","title":"National 710551 Engine Crankshaft Seal - Front","description":"\u003ch2\u003eOverview of National 710551 Engine Crankshaft Seal\u003c\/h2\u003e\u003cp\u003eThe National 710551 engine crankshaft seal is designed to provide reliable sealing performance for various GM and Isuzu vehicles. Engineered with a PTFE 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: 1.929 inches (49.000 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.331 inches (59.200 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.413 inches (10.500 mm)\u003c\/li\u003e\n\u003cli\u003eMaterial: Durable PTFE for enhanced wear resistance\u003c\/li\u003e\n\u003cli\u003eHelix type: Clockwise-spiral lip design for effective sealing\u003c\/li\u003e\n\u003cli\u003eHousing bore diameter: 2.323 inches (59.000 mm)\u003c\/li\u003e\n\u003cli\u003ePart number: 710551, Series 710500\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis National crankshaft seal (part number 710551) is constructed from PTFE, a material known for its chemical resistance and low friction properties, making it suitable for demanding engine environments. The seal features a clockwise-spiral lip design that ensures a tight fit around the crankshaft, reducing the risk of oil leakage. With an inside diameter of 1.929 inches and an outside diameter of 2.331 inches, it fits precisely into housings with a bore diameter of approximately 2.323 inches. The 0.413-inch thickness provides a robust barrier against contaminants while maintaining flexibility for installation.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis engine crankshaft seal is compatible with a range of vehicles including Buick, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, and Saab models. Specifically, it fits models such as the Chevrolet Colorado, Trailblazer, and Trailblazer EXT; GMC Canyon, Envoy, Envoy XL, Envoy XUV, H3, and H3T; Isuzu i-280, i-290, i-350, and i-370; Buick Rainier; Oldsmobile Bravada; Saab 9-7x; and Hummer Ascender.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the National 710551 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 proper oil pressure and lubrication\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on crankshaft and engine components\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\u003eWhen installing the National 710551 crankshaft seal, ensure the housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the PTFE lip. Verify the seal orientation matches the clockwise-spiral lip design for optimal sealing. Lubricate the seal lip lightly with engine oil before installation to reduce initial wear. Follow vehicle-specific service manual instructions for torque specifications and installation procedures.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational engine seals are manufactured to meet OEM specifications and undergo rigorous quality control to ensure durability and performance. The 710551 seal is part of the 710500 series, known for consistent sealing reliability in automotive applications. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product quality.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448351916213,"sku":"BCZK-710551","price":23.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_710551_Fro.jpg?v=1774734763","url":"https:\/\/www.partcatalog.com\/products\/national-710551-engine-crankshaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}