{"product_id":"national-710668-transfer-case-output-shaft-seal","title":"National 710668 Transfer Case Output Shaft Seal - Front","description":"\u003ch2\u003eOverview of National 710668 Transfer Case Output Shaft Seal\u003c\/h2\u003e\u003cp\u003eThe National 710668 transfer case output shaft seal is engineered to provide reliable sealing performance for select GM and Dodge vehicles. Designed with a bi-directional lip and fluoro-elastomer material, this oil seal helps maintain transfer case integrity and prevent fluid leaks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter options: 1.376 inch (34.95 mm) and 1.378 inch (35.00 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.567 inch (65.20 mm)\u003c\/li\u003e\n\u003cli\u003eThickness: 0.398 inch (10.00 mm)\u003c\/li\u003e\n\u003cli\u003eBi-directional lip design for effective sealing in both rotational directions\u003c\/li\u003e\n\u003cli\u003eConstructed from durable fluoro-elastomer sealing material\u003c\/li\u003e\n\u003cli\u003eCompatible housing bore: 2.559 inch (65.00 mm)\u003c\/li\u003e\n\u003cli\u003eOverall width with side lip: 0.650 inch (16.5 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Material Specifications\u003c\/h2\u003e\u003cp\u003eThis transfer case output shaft seal from National is part of the 710600 series and is specifically designed to fit transfer cases requiring a 40-type seal. The fluoro-elastomer material offers resistance to heat, oil, and wear, making it suitable for demanding automotive environments. The bi-directional lip design ensures a tight seal around the shaft, minimizing the risk of fluid leakage during both forward and reverse rotation.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThe National 710668 seal is compatible with a range of vehicles including Cadillac, Chevrolet, Dodge, GMC, and Oldsmobile models. It is suitable for transfer cases in vehicles such as the Chevrolet Avalanche 1500 and 2500, Silverado 1500 and 1500 Classic, Suburban 1500 and 2500, Tahoe, Yukon and Yukon XL 1500\/2500, as well as the GMC Sierra 1500 and 1500 Classic, Jimmy, Bravada, and Safari. Dodge Ram 1500 and other GM trucks like the Blazer and Astro are also supported.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the 710668 Transfer Case Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents transfer case fluid leaks that can cause damage to internal components\u003c\/li\u003e\n\u003cli\u003eReduces contamination ingress into the transfer case assembly\u003c\/li\u003e\n\u003cli\u003eMaintains proper lubrication by sealing the output shaft effectively\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly repairs related to seal failure and fluid loss\u003c\/li\u003e\n\u003cli\u003eImproves transfer case longevity and operational reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the housing bore is clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eVerify shaft dimensions match the seal’s inside diameter for proper fit\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging the seal during installation\u003c\/li\u003e\n\u003cli\u003eApply a light coating of transfer case fluid on the seal lip to ease installation\u003c\/li\u003e\n\u003cli\u003eCheck for proper seating and alignment to prevent premature wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eNational transfer case output shaft seals are manufactured to meet OEM specifications and undergo rigorous quality control testing. The fluoro-elastomer material and bi-directional lip design contribute to consistent sealing performance under various operating conditions. 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":43448358830261,"sku":"BCZK-710668","price":20.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_710668_Fro.jpg?v=1774734780","url":"https:\/\/www.partcatalog.com\/products\/national-710668-transfer-case-output-shaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}