{"product_id":"national-303-ss-manual-transmission-countershaft-bearing","title":"National 303-SS Manual Transmission Countershaft Bearing - Rear","description":"\u003ch2\u003eOverview of National 303-SS Manual Transmission Countershaft Bearing\u003c\/h2\u003e\u003cp\u003eThe National 303-SS is a precision-engineered manual transmission countershaft bearing designed for reliable performance in select Audi, Chrysler, Dodge, Nissan, and Plymouth vehicles. This single row radial ball bearing ensures smooth operation and durability in demanding transmission applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSingle row radial design for efficient load handling\u003c\/li\u003e\n\u003cli\u003eInner race bore diameter of 0.669 inches (17.000 mm)\u003c\/li\u003e\n\u003cli\u003eOuter race outside diameter of 1.850 inches (47.000 mm)\u003c\/li\u003e\n\u003cli\u003eWidth of 0.551 inches (14.000 mm) for compact fitment\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple models including Dodge Charger, Plymouth Duster, and Nissan B150\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications and Design Features\u003c\/h2\u003e\u003cp\u003eThe National 303-SS manual transmission countershaft bearing features a 300 series ball bearing with an A-3 type design. The bearing’s inner race has a precise bore of 0.669 inches (17 mm) and a width of 0.551 inches (14 mm), providing a secure fit on the countershaft. The outer race diameter measures 1.850 inches (47 mm) with a matching width of 0.551 inches (14 mm), ensuring proper alignment within the transmission housing. Both inner and outer races have a radius of 0.040 inches (1.020 mm), contributing to smooth rotation and reduced wear under radial loads.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis National 303-SS bearing is compatible with a range of manual transmission models from Audi, Chrysler, Dodge, Nissan, and Plymouth. Notable compatible vehicles include the Dodge Charger, Dodge Dakota, Plymouth Duster, Nissan B150, and Chrysler LeBaron. The bearing is specifically designed to replace worn or damaged countershaft bearings in these models, maintaining transmission integrity and performance.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the 303-SS Bearing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEliminates excessive play or noise in the manual transmission countershaft\u003c\/li\u003e\n\u003cli\u003ePrevents premature wear of transmission gears due to bearing failure\u003c\/li\u003e\n\u003cli\u003eReduces vibration and improves smooth gear shifting\u003c\/li\u003e\n\u003cli\u003eRestores proper alignment of the countershaft assembly\u003c\/li\u003e\n\u003cli\u003eMitigates risk of transmission overheating caused by bearing friction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National 303-SS bearing, ensure the transmission is clean and free of debris. Use appropriate bearing press tools to avoid damage to the bearing races. Verify the bearing orientation matches the original part and confirm the bore and outer diameter dimensions for a proper fit. Lubricate the bearing according to manufacturer specifications before assembly to optimize performance and longevity.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eNational bearings are manufactured to meet industry standards for durability and precision. The 303-SS manual transmission countershaft bearing undergoes rigorous quality control to ensure consistent performance. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the product’s reliability.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43446449701045,"sku":"BCZK-303-SS","price":31.63,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_303SS_Ang_4c237ee4-45e7-4053-bf29-b496e2142b5c.jpg?v=1774734487","url":"https:\/\/www.partcatalog.com\/products\/national-303-ss-manual-transmission-countershaft-bearing","provider":"PartCatalog","version":"1.0","type":"link"}