National A-23 Wheel Bearing and Race Set - Front Inner
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National

National A-23 Wheel Bearing and Race Set - Front Inner

Brand National A-23
Position Front Inner
Cone Bore (Inch) 2.0000
Cone Bore (MM) 50.8000
Cone Length (Inch) 2.0380
Cone Length (MM) 51.7650
Cone Radius (Inch) 0.1400
Cone Radius (MM) 3.5560
Cup Bore (Inch) 3.2500
Cup Bore (MM) 82.5500
Cup Length (Inch) 1.6380
Cup Length (MM) 41.6050
Cup Radius (Inch) 0.0500
Cup Radius (MM) 1.2700
Footnote Includes spacer x-2446-6
Part Description Taper bearing set
Standout (Inch) 0.0200
Standout (MM) 0.5080
Taper Bearing Cone Lm104949e2
Taper Bearing Cup Lm1049112
Width (Inch) 0.2038
Width (mm) 5.1770
Fits Cadillac and Oldsmobile · 20 vehicles

Premium-grade steel. Crowned raceways and rollers help distribute load evenly.

Taper bearing set. A wheel bearing and race set for smooth, reliable rotation.

Includes a spacer for added installation convenience.

Cross-references Gates A23, SKF BR23 and Timken SET23 for the same application. See all 12.

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National A-23 Taper Bearing Set

The National A-23 wheel bearing and race set is built for front inner service on select Cadillac Eldorado and Oldsmobile Toronado applications. It uses premium-grade steel with crowned raceways and rollers to promote even load distribution in the bearing assembly.

  • Part number: A-23
  • Taper bearing cone: LM104949E2
  • Taper bearing cup: LM1049112
  • Cone bore: 2.0000 in. / 50.8000 mm
  • Cup bore: 3.2500 in. / 82.5500 mm
  • Width: 0.2038 in. / 5.1770 mm
  • Includes spacer X-2446-6
  • Cross-reference: Timken SET23

Fitment Details

Fits 1969-1978 Cadillac Eldorado, front inner. Fits 1969-1978 Oldsmobile Toronado, front inner. This A-23 taper bearing set matches the listed cup-and-cone design for direct replacement in these front inner wheel bearing applications.

What This Bearing Set Helps Address

  • Wheel end noise caused by worn tapered bearings
  • Excessive play or looseness at the front inner wheel bearing
  • Rough rotation from damaged raceways or rollers
  • Service replacement for worn cup and cone components
  • Fitment correction for Cadillac Eldorado and Oldsmobile Toronado front inner bearing service

Installation Notes

Verify cone and cup dimensions before installation and inspect the spindle, hub, and related surfaces for wear or scoring. Clean all mating surfaces thoroughly, pack and set the bearing according to the vehicle service procedure, and confirm proper preload after assembly. Use the included spacer only where specified by the application.

Quality Assurance

National manufactures this taper bearing set with premium-grade steel and crowned raceways and rollers to support even load distribution. The A-23 is a direct-fit wheel bearing and race set for the listed Cadillac and Oldsmobile front inner applications.

Related reading

This part fits 20 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1978CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1978OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1977CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1977OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1976CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1976OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1975CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1975OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1974CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1974OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1973CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1973OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1972CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1972OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1971CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1971OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1970CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1970OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1969CadillacEldoradoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
1969OldsmobileToronadoFront InnerTapered wheel bearing and race set with cup and cone design for optimal fitment.
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gates — A23SKF — BR23Timken — SET23745062774518657455526BT23SFS23NO23SETS23S23AS77