{"product_id":"national-471869-transfer-case-input-shaft-seal","title":"National 471869 Transfer Case Input Shaft Seal","description":"\u003ch2\u003eOverview of National Transfer Case Input Shaft Seal 471869\u003c\/h2\u003e\u003cp\u003eThe National Transfer Case Input Shaft Seal 471869 is engineered to provide reliable sealing performance for transfer cases in select Chevrolet, Ford, GMC, and Jeep vehicles. Designed with nitrile material and precise dimensions, this oil seal helps maintain proper lubrication and prevents fluid leaks in demanding automotive applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.937 inches (49.200 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.690 inches (68.330 mm)\u003c\/li\u003e\n\u003cli\u003eThickness\/width: 0.375 inches (9.530 mm)\u003c\/li\u003e\n\u003cli\u003eSealing material: durable nitrile for resistance to oil and heat\u003c\/li\u003e\n\u003cli\u003eRedicoat surface treatment for enhanced wear protection\u003c\/li\u003e\n\u003cli\u003eCompatible with transfer case housing bore of 2.686 inches (68.220 mm)\u003c\/li\u003e\n\u003cli\u003ePart of National's 470000 series, designed for transfer case sealing systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis National transfer case input shaft seal (part number 471869) is specifically designed to fit transfer cases in Chevrolet Blazer, Ford Bronco, GMC Jimmy, Jeep CJ5, and other related models. The seal’s nitrile construction offers excellent resistance to oil, heat, and wear, ensuring long-lasting performance under typical operating conditions. The precise inside diameter of 1.937 inches matches the input shaft size, while the outside diameter of 2.690 inches fits securely within the transfer case housing bore. The 0.375-inch thickness provides a robust sealing surface to prevent fluid leakage and contamination.\u003c\/p\u003e\u003cp\u003eFeaturing a Redicoat coating, this seal benefits from improved surface durability and reduced friction, which helps extend the service life of the transfer case components. As part of National’s 470000 series, this seal meets industry standards for transfer case gaskets and sealing systems, making it a reliable replacement part for maintenance and repair.\u003c\/p\u003e\u003ch2\u003eApplications and Common Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePrevents transfer case fluid leaks that can cause low lubrication and damage\u003c\/li\u003e\n\u003cli\u003eEliminates contamination ingress that may lead to premature wear of input shaft bearings\u003c\/li\u003e\n\u003cli\u003eMaintains proper sealing under high temperature and pressure conditions\u003c\/li\u003e\n\u003cli\u003eReduces risk of transfer case overheating due to fluid loss\u003c\/li\u003e\n\u003cli\u003eHelps restore transfer case performance in Chevrolet Blazer, Ford F-150, GMC K1500, Jeep CJ7, and similar models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the transfer case housing bore is clean and free of debris before installation\u003c\/li\u003e\n\u003cli\u003eVerify the shaft and bore dimensions match the seal specifications (1.937 inch shaft, 2.686 inch bore)\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to press the seal evenly into the housing without distortion\u003c\/li\u003e\n\u003cli\u003eApply a light coating of transfer case fluid on the seal lip before installation to reduce initial wear\u003c\/li\u003e\n\u003cli\u003eInspect the input shaft for wear or damage prior to seal replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational transfer case input shaft seals are manufactured to meet strict quality standards for durability and fitment. The nitrile material and Redicoat treatment ensure resistance to oil degradation and mechanical wear. This part is backed by National’s standard warranty coverage, providing confidence in its performance and reliability when installed according to manufacturer guidelines.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448302239925,"sku":"BCZK-471869","price":17.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_471869_Fro.jpg?v=1774734664","url":"https:\/\/www.partcatalog.com\/products\/national-471869-transfer-case-input-shaft-seal","provider":"PartCatalog","version":"1.0","type":"link"}