{"product_id":"national-a-34-wheel-bearing-and-race-set","title":"National A-34 Wheel Bearing and Race Set - Front Outer","description":"\u003ch2\u003eNational A-34 Wheel Bearing and Race Set Overview\u003c\/h2\u003e\u003cp\u003eThe National A-34 wheel bearing and race set is engineered for reliable driveline performance in select Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Pontiac vehicles. Designed as a taper bearing set, this component ensures precise fitment and durability for models such as the Blazer, Camaro, Firebird, and S10.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTaper bearing cone bore diameter: 0.8437 inch (21.43 mm)\u003c\/li\u003e\n\u003cli\u003eCone length: 0.6550 inch (16.637 mm)\u003c\/li\u003e\n\u003cli\u003eCone radius: 0.0500 inch (1.27 mm)\u003c\/li\u003e\n\u003cli\u003eCup bore diameter: 1.7810 inch (45.237 mm)\u003c\/li\u003e\n\u003cli\u003eCup length: 0.4750 inch (12.065 mm)\u003c\/li\u003e\n\u003cli\u003eCup radius: 0.0500 inch (1.27 mm)\u003c\/li\u003e\n\u003cli\u003eStandout dimension: 0.0135 inch (0.343 mm)\u003c\/li\u003e\n\u003cli\u003eOverall width: 0.6100 inch (15.494 mm)\u003c\/li\u003e\n\u003cli\u003eIncludes taper bearing cone (LM12748) and cup (LM12710)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe National A-34 wheel bearing and race set features a taper bearing design optimized for driveline applications requiring precise alignment and load distribution. The cone bore measures 0.8437 inches (21.43 mm) with a length of 0.6550 inches (16.637 mm), providing a secure fit on the axle shaft. The cup bore diameter is 1.7810 inches (45.237 mm) with a length of 0.4750 inches (12.065 mm), ensuring proper seating within the hub assembly. Both cone and cup have a radius of 0.0500 inches (1.27 mm), contributing to smooth rotation and reduced wear. The standout dimension of 0.0135 inches (0.343 mm) supports correct bearing preload during installation. This set includes the taper bearing cone LM12748 and cup LM12710, matching OEM specifications for consistent performance.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis wheel bearing and race set is compatible with a range of vehicles including Buick models like the Regal and Grand National, Chevrolet trucks and SUVs such as the Blazer, S10, and Silverado, GMC S15 and Jimmy, Isuzu Hombre, Oldsmobile Cutlass variants, and Pontiac Firebird and Grand Prix. The National A-34 part number is suitable for driveline maintenance and repair on these vehicles, ensuring proper fit and function.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the National A-34 Set\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEliminates wheel bearing noise caused by worn or damaged bearings\u003c\/li\u003e\n\u003cli\u003ePrevents excessive wheel play and vibration\u003c\/li\u003e\n\u003cli\u003eRestores proper hub alignment and rotation\u003c\/li\u003e\n\u003cli\u003eReduces premature wear on axle and hub components\u003c\/li\u003e\n\u003cli\u003eImproves overall driveline stability and safety\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the National A-34 wheel bearing and race set, ensure the hub and spindle surfaces are clean and free of debris. Use proper tools to press the bearing cup into the hub without damaging the race surface. Apply the correct torque specifications to the spindle nut to achieve the recommended bearing preload, accounting for the 0.0135 inch standout dimension. It is advisable to inspect related components such as seals and spindle threads during installation to maintain optimal driveline performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNational wheel bearing and race sets are manufactured to meet or exceed OEM standards for durability and precision. The A-34 set undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against defects in materials and workmanship, providing confidence in the product’s reliability for Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Pontiac applications.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":43448398348469,"sku":"BCZK-A-34","price":22.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_A34_Ang_f030c5d4-afd9-4d3e-b885-5d5ab11263e1.jpg?v=1774734829","url":"https:\/\/www.partcatalog.com\/products\/national-a-34-wheel-bearing-and-race-set","provider":"PartCatalog","version":"1.0","type":"link"}