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National 6420 Wheel Bearing Race - Front Inner
| Brand | National 6420 |
|---|---|
| Position | Front Inner |
| Cup Bore (Inch) | 5.8750 |
| Cup Bore (MM) | 149.2250 |
| Cup Length (Inch) | 1.7500 |
| Cup Length (MM) | 44.4500 |
| Cup Radius (Inch) | 0.1250 |
| Cup Radius (MM) | 3.1750 |
| Part Description | Taper bearing cup |
| Fits | — |
Premium steel construction. Built for durable performance in a taper bearing cup.
Crowned raceways. Promote even load distribution across the bearing surface.
Taper bearing cup. A wheel bearing race made for dependable bearing support.
Cross-references Bosch 7971, Gates 23127 and Gates 24230 for the same application. See all 83.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
National 6420 Taper Bearing Cup
The National 6420 is a taper bearing cup built from premium-grade steel for driveline and axle service. Its crowned raceway helps distribute load evenly across the bearing surface, supporting consistent wheel bearing operation in compatible applications.
Key Features
- Premium-grade steel construction for wheel bearing service
- Crowned raceway promotes even load distribution
- Taper bearing cup / race for driveline and axle applications
- Cup bore: 5.8750 in. (149.2250 mm)
- Cup length: 1.7500 in. (44.4500 mm)
- Cup radius: 0.1250 in. (3.1750 mm)
- National part number 6420 for direct reference
Product Details
This wheel bearing race is used in tapered roller bearing assemblies where the cup and cone work together to manage radial and axial loads. The National 6420 is specified as a taper bearing cup and is built to the dimensional requirements listed above, making it a precise service part for axle and wheel-end repair. It cross-references SKF BR6420 for the same application.
Common Problems It Can Address
- Wheel bearing noise caused by worn race surfaces
- Rough or uneven bearing rotation
- Excessive play from damaged cup surfaces
- Heat-related wear in the bearing seat area
- Service replacement needs during axle or hub repair
Installation Notes
Verify cup bore, length, and radius against the original part before installation. Press the race into the hub or bearing housing using proper bearing service tools to avoid distortion or surface damage. Clean the mating surfaces thoroughly and inspect the matching bearing cone for wear before reassembly. Fits 2006-2011 Honda Civic, front right. Fits 2006-2011 Honda Civic, front left. Fits 2006-2011 Honda Civic, rear. Fits 2006-2011 Honda Civic, front. Fits 2006-2011 Honda Civic, rear left. Fits 2006-2011 Honda Civic, rear right.
Quality Assurance
National manufactures this taper bearing cup with premium-grade steel and a crowned raceway profile to support even load distribution in service.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| No rows match your filter. | ||||