{"product_id":"national-25590-manual-transmission-countershaft-bearing","title":"National 25590 Manual Transmission Countershaft Bearing","description":"\u003ch2\u003eOverview of National 25590 Manual Transmission Countershaft Bearing\u003c\/h2\u003e\u003cp\u003eThe National 25590 manual transmission countershaft bearing is engineered to provide reliable support and smooth operation for various manual transmissions. Designed with precise dimensions, this taper bearing cone is compatible with multiple vehicle makes and models, including Chevrolet Blazer, Ford F-150, Jeep Wrangler, and Dodge Ram 1500.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTaper bearing cone with a cone bore diameter of 1.7960 inches (45.6180 mm)\u003c\/li\u003e\n\u003cli\u003eCone length measures 1.0000 inch (25.4000 mm) for accurate fitment\u003c\/li\u003e\n\u003cli\u003eCone radius of 0.1400 inch (3.5560 mm) ensures proper seating and load distribution\u003c\/li\u003e\n\u003cli\u003ePart number 25590 for easy identification and replacement\u003c\/li\u003e\n\u003cli\u003eCompatible with a wide range of manual transmissions from Chevrolet, Ford, Dodge, Jeep, and more\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications and Design Details\u003c\/h2\u003e\u003cp\u003eThis National manual transmission countershaft bearing features a taper bearing cone designed to handle axial and radial loads within the transmission assembly. The cone bore diameter of 1.7960 inches (45.6180 mm) and cone length of 1.0000 inch (25.4000 mm) are critical for maintaining proper alignment and reducing friction on the countershaft. The cone radius of 0.1400 inch (3.5560 mm) contributes to the bearing’s ability to evenly distribute stress and extend service life under demanding driving conditions.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThe National 25590 bearing is compatible with manual transmissions in a variety of vehicles, including but not limited to:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Blazer, C10 Suburban, and K1500 Suburban\u003c\/li\u003e\n\u003cli\u003eFord F-100, F-150, F-250 Super Duty, and F-350 Super Duty\u003c\/li\u003e\n\u003cli\u003eDodge Ram 1500, Ram 2500, and Ram 3500\u003c\/li\u003e\n\u003cli\u003eJeep Wrangler, Cherokee, and Grand Wagoneer\u003c\/li\u003e\n\u003cli\u003eAdditional models from Chrysler, Honda, Isuzu, Lincoln, Mercury, and GMC\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by This Bearing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExcessive play or noise in the manual transmission countershaft\u003c\/li\u003e\n\u003cli\u003ePremature wear due to improper bearing fit or damage\u003c\/li\u003e\n\u003cli\u003eTransmission vibration caused by worn or failing bearings\u003c\/li\u003e\n\u003cli\u003eDifficulty shifting gears related to bearing degradation\u003c\/li\u003e\n\u003cli\u003ePreventing further transmission damage by maintaining proper shaft alignment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the transmission countershaft and bearing surfaces are clean and free of debris before installation. Verify the cone bore and length dimensions match the original bearing specifications to maintain proper fit. Use appropriate tools to press the bearing cone into place without causing damage. It is recommended to inspect related transmission components during installation for wear or damage.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational parts are manufactured to meet industry standards for durability and performance. The 25590 manual transmission countershaft bearing undergoes quality control inspections to ensure dimensional accuracy and material integrity. Please refer to National’s warranty policy for specific coverage details.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":51869014196405,"sku":"BCZK-25590","price":30.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_25590_Ang.jpg?v=1774734573","url":"https:\/\/www.partcatalog.com\/products\/national-25590-manual-transmission-countershaft-bearing","provider":"PartCatalog","version":"1.0","type":"link"}