{"product_id":"national-hm803149-differential-pinion-bearing-rear-inner","title":"National HM803149 Differential Pinion Bearing - Rear Inner","description":"\u003ch2\u003eNational HM803149 Differential Pinion Bearing Overview\u003c\/h2\u003e\u003cp\u003eThe National HM803149 differential pinion bearing is engineered to provide reliable support and smooth operation for the differential pinion shaft. Designed with precise dimensions, this taper bearing cone ensures optimal fitment and durability for various vehicle makes including Audi, BMW, Ford, and Mercedes-Benz.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTaper bearing cone with a cone bore diameter of 1.7500 inches (44.45 mm)\u003c\/li\u003e\n\u003cli\u003eCone length measures 1.1563 inches (29.37 mm) for accurate seating\u003c\/li\u003e\n\u003cli\u003eCone radius of 0.1400 inches (3.556 mm) to maintain proper bearing geometry\u003c\/li\u003e\n\u003cli\u003eCompatible with a wide range of models such as BMW 540i, Ford F-250, and Mercedes-Benz 500SEL\u003c\/li\u003e\n\u003cli\u003ePart number HM803149 ensures correct identification and fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications and Design Details\u003c\/h2\u003e\u003cp\u003eThis National differential pinion bearing features a taper bearing cone designed to support the pinion gear within the differential assembly. The cone bore diameter of 1.7500 inches (44.45 mm) and cone length of 1.1563 inches (29.37 mm) provide a precise fit to maintain alignment and reduce wear. The cone radius of 0.1400 inches (3.556 mm) helps distribute load evenly, contributing to the bearing’s longevity and performance under varying driving conditions.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThe HM803149 bearing is compatible with numerous vehicle makes and models, including but not limited to Audi, BMW, Chevrolet, Chrysler, Dodge, Ford, GMC, Jeep, Lamborghini, Mercedes-Benz, and Pontiac. Specific models include BMW 540i, 740iL, M3, and Mercedes-Benz 500SEL, 600SL, as well as Ford F-250 and F-350 trucks. This part is ideal for those seeking a reliable replacement differential pinion bearing for these vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the HM803149 Bearing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEliminates excessive differential noise caused by worn pinion bearings\u003c\/li\u003e\n\u003cli\u003ePrevents premature wear and damage to the differential pinion gear\u003c\/li\u003e\n\u003cli\u003eReduces vibration and improves drivetrain smoothness\u003c\/li\u003e\n\u003cli\u003eRestores proper differential gear alignment and function\u003c\/li\u003e\n\u003cli\u003eHelps maintain optimal bearing preload and torque settings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National HM803149 differential pinion bearing, ensure the bearing cone is properly seated within the differential housing. Use appropriate tools to avoid damage to the bearing surfaces. Verify the cone bore and length dimensions match the vehicle specifications to maintain correct bearing preload. It is recommended to inspect related components such as the pinion gear and seals during installation for comprehensive drivetrain maintenance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational bearings are manufactured to meet industry standards for durability and performance. The HM803149 differential pinion bearing undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically adhere to OEM quality requirements, offering dependable service life when installed correctly.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":52166026100917,"sku":"BCZK-HM803149","price":44.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_HM803149_Ang.jpg?v=1775590346","url":"https:\/\/www.partcatalog.com\/products\/national-hm803149-differential-pinion-bearing-rear-inner","provider":"PartCatalog","version":"1.0","type":"link"}