HomeDriveline and Axles > BearingsNational A-34 Wheel Bearing and Race Set - Front Outer
Part #: A-34

National A-34 Wheel Bearing and Race Set - Front Outer

Front Outer
⚙️ 157 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, Isuzu, Pontiac, Avanti, Oldsmobile, and Buick, S10, Sonoma, Hombre, Blazer, Jimmy, LLV, S10 Blazer, Camaro, Firebird, S15 Jimmy, S15, II, Monte Carlo, Cutlass Supreme, Regal, El Camino, Caballero, Cutlass, Cutlass Salon, Grand Prix, Bonneville, Cutlass Calais, Malibu, Cutlass Cruiser, and Grand LeMans
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National A-34 Wheel Bearing and Race Set Overview

The 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.

  • Taper bearing cone bore diameter: 0.8437 inch (21.43 mm)
  • Cone length: 0.6550 inch (16.637 mm)
  • Cone radius: 0.0500 inch (1.27 mm)
  • Cup bore diameter: 1.7810 inch (45.237 mm)
  • Cup length: 0.4750 inch (12.065 mm)
  • Cup radius: 0.0500 inch (1.27 mm)
  • Standout dimension: 0.0135 inch (0.343 mm)
  • Overall width: 0.6100 inch (15.494 mm)
  • Includes taper bearing cone (LM12748) and cup (LM12710)

Technical Details and Specifications

The 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.

Compatible Vehicles and Applications

This 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.

Common Issues Addressed by the National A-34 Set

  • Eliminates wheel bearing noise caused by worn or damaged bearings
  • Prevents excessive wheel play and vibration
  • Restores proper hub alignment and rotation
  • Reduces premature wear on axle and hub components
  • Improves overall driveline stability and safety

Installation Notes and Tips

When 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.

Quality Assurance and Warranty

National 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.

BrandNational
Part NumberA-34
Cone Bore (Inch)0.8437
Cone Bore (MM)21.4300
Cone Length (Inch)0.6550
Cone Length (MM)16.6370
Cone Radius (Inch)0.0500
Cone Radius (MM)1.2700
Cup Bore (Inch)1.7810
Cup Bore (MM)45.2370
Cup Length (Inch)0.4750
Cup Length (MM)12.0650
Cup Radius (Inch)0.0500
Cup Radius (MM)1.2700
Part DescriptionTaper Bearing Set
Standout (Inch)0.0135
Standout (MM)0.3430
Taper Bearing ConeLM12748
Taper Bearing CupLM12710
Width (Inch)0.6100
Width (mm)15.4940

This part fits 157 vehicles. Search below:

YearMakeModelDrive TypeLitersCylindersPositionNotes
2003ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2003GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2002ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2002GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2001ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2001GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2000ChevroletS10FWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2000ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2000GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
2000IsuzuHombreRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1999ChevroletS10FWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1999ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1999GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1999IsuzuHombreRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1998ChevroletS10FWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1998ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1998GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1998IsuzuHombreRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1997ChevroletBlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1997ChevroletS10FWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1997ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1997GMCJimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1997GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1997IsuzuHombreFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1996ChevroletBlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1996ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1996GMCJimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1996GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1996IsuzuHombreFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1995ChevroletBlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1995ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1995GMCJimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1995GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1994ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1994ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1994GMCJimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1994GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1993ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1993ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1993GMCJimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1993GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1992ChevroletCamaroFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1992ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1992ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1992GMCJimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1992GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1992PontiacFirebirdFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1991ChevroletCamaroFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1991ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1991ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1991GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1991GMCSonomaRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1991PontiacFirebirdFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1990ChevroletCamaroFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1990ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1990ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1990GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1990GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1990PontiacFirebirdFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1989ChevroletCamaroFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1989ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1989ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1989GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1989GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1989PontiacFirebirdFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1988ChevroletCamaroFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1988ChevroletMonte CarloFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1988ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1988ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1988GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1988GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1988OldsmobileCutlass Supreme5.0LV8Front OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1988PontiacFirebirdFront Outerwithout Performance Package; Taper Bearing Set Includes Cup and Cone
1987BuickRegalFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987ChevroletCamaroFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987ChevroletEl CaminoFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987ChevroletMonte CarloFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987OldsmobileCutlassFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987OldsmobileCutlass SalonFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987OldsmobileCutlass SupremeFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987PontiacFirebirdFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1987PontiacGrand PrixFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986BuickRegalFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986ChevroletCamaroFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986ChevroletEl CaminoFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986ChevroletMonte CarloFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986OldsmobileCutlassFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986OldsmobileCutlass SalonFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986OldsmobileCutlass SupremeFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986PontiacBonnevilleFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986PontiacFirebirdFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1986PontiacGrand PrixFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985BuickRegalFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985ChevroletCamaroFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985ChevroletEl CaminoFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985ChevroletMonte CarloFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985OldsmobileCutlassFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985OldsmobileCutlass SalonFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985OldsmobileCutlass SupremeFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985PontiacBonnevilleFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985PontiacFirebirdFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1985PontiacGrand PrixFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984BuickRegalFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984ChevroletCamaroFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984ChevroletEl CaminoFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984ChevroletMonte CarloFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984OldsmobileCutlass CalaisFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984OldsmobileCutlass SupremeFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984PontiacBonnevilleFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984PontiacFirebirdFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1984PontiacGrand PrixFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983BuickRegalFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983ChevroletCamaroFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983ChevroletEl CaminoFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983ChevroletMalibuFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983ChevroletMonte CarloFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983ChevroletS10RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983ChevroletS10 BlazerRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983GMCS15 JimmyRWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983OldsmobileCutlass CalaisFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983OldsmobileCutlass CruiserFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983OldsmobileCutlass SupremeFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983PontiacBonnevilleFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983PontiacFirebirdFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983PontiacGrand LeMansFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1983PontiacGrand PrixFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982BuickRegalFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982ChevroletCamaroFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982ChevroletEl CaminoFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982ChevroletMalibuFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982ChevroletMonte CarloFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982ChevroletS10Front OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982GMCS15RWDFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982OldsmobileCutlass CalaisFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982OldsmobileCutlass CruiserFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982OldsmobileCutlass SupremeFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982PontiacBonnevilleFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982PontiacFirebirdFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982PontiacGrand LeMansFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.
1982PontiacGrand PrixFront OuterTapered wheel bearing and race set with cup and cone design for optimal fitment.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

051-415214045734140669188-14066918-0A-34A34BR34FS34NO34SETS34S34AS602SET34

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.