{"product_id":"national-710664-transfer-case-input-shaft-seal","title":"National 710664 Transfer Case Input Shaft Seal","description":"\u003ch2\u003eOverview of National Transfer Case Input Shaft Seal 710664\u003c\/h2\u003e\u003cp\u003eThe National 710664 Transfer Case Input Shaft Seal is engineered to provide reliable sealing performance for a range of GM and Ford vehicles. Designed with durable polyacrylate material, this oil seal helps maintain transfer case integrity by preventing fluid leaks and contamination.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.886 inches (47.900 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.756 inches (70.000 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.472 inches (12.000 mm)\u003c\/li\u003e\n\u003cli\u003eSealing material: Polyacrylate for enhanced durability\u003c\/li\u003e\n\u003cli\u003eCompatible housing bore: 2.750 inches (69.850 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe National 710664 transfer case input shaft seal is part of the 710600 series, designed specifically for transfer case applications requiring precise sealing dimensions. The seal’s polyacrylate construction offers resistance to heat, oil, and wear, ensuring long-lasting performance in demanding automotive environments. With an inside diameter of 1.886 inches and an outside diameter of 2.756 inches, this seal fits securely within the housing bore of 2.750 inches, providing a tight seal around the input shaft to prevent oil leakage.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis transfer case input shaft seal is compatible with a variety of GM and Ford models, including Cadillac Escalade, Escalade ESV, Escalade EXT, Ford Expedition, Express 1500 and 2500, F-150, Lincoln Navigator, Mark LT, GMC Sierra 1500, Yukon, Yukon XL 1500 and 2500, Suburban 1500 and 2500, Tahoe, and Savana 1500 and 2500. The part number 710664 ensures proper fitment and function within these specific transfer case systems.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the National 710664 Seal\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents transfer case fluid leaks that can cause damage\u003c\/li\u003e\n\u003cli\u003eReduces contamination from dirt and debris entering the transfer case\u003c\/li\u003e\n\u003cli\u003eMaintains proper lubrication of the input shaft\u003c\/li\u003e\n\u003cli\u003eMinimizes wear on transfer case components due to fluid loss\u003c\/li\u003e\n\u003cli\u003eHelps avoid costly 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 710664 transfer case input shaft seal, ensure the housing bore is clean and free of debris. Use appropriate tools to press the seal evenly into place without damaging the sealing lip. Verify the seal’s orientation matches the manufacturer’s specifications to maintain optimal sealing performance. It is recommended to inspect the input shaft for wear or damage before installation to ensure a proper seal.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational transfer case seals are manufactured to meet industry standards for durability and performance. The polyacrylate material used in the 710664 seal provides resistance to heat and oil degradation. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in the product’s reliability.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448358633653,"sku":"BCZK-710664","price":21.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_710664_Fro.jpg?v=1774734779","url":"https:\/\/www.partcatalog.com\/products\/national-710664-transfer-case-input-shaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}