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National A-46 Wheel Bearing and Race Set - Rear Inner
| Brand | National A-46 |
|---|---|
| Position | Rear Inner |
| Cone Bore (Inch) | 2.2500 |
| Cone Bore (MM) | 57.1500 |
| Cone Length (Inch) | 0.8640 |
| Cone Length (MM) | 21.9460 |
| Cone Radius (Inch) | 0.2000 |
| Cone Radius (MM) | 5.0800 |
| Cup Bore (Inch) | 3.8125 |
| Cup Bore (MM) | 96.8380 |
| Cup Length (Inch) | 0.6250 |
| Cup Length (MM) | 15.8750 |
| Cup Radius (Inch) | 0.0300 |
| Cup Radius (MM) | 0.7620 |
| Footnote | Components not available seperately |
| Part Description | Taper bearing set |
| Taper Bearing Cone | Np706218 |
| Taper Bearing Cup | Np910345 |
| Width (Inch) | 0.6250 |
| Width (mm) | 15.8750 |
| Fits | Chevrolet and GMC · 63 vehicles |
Premium-grade steel. Built for durable wheel bearing performance.
Crowned raceways. Promote even load distribution across the bearing.
Taper bearing set. Cone and cup are supplied as a matched set.
Cross-references Timken NP706218, 15042155 and BR46 for the same application. See all 4.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
National A-46 Rear Inner Wheel Bearing Set
National A-46 is a taper bearing and race set for rear inner wheel applications on select Chevrolet and GMC trucks and vans. It uses premium-grade steel with crowned raceways and rollers to promote even load distribution in demanding driveline service.
Key Features
- Taper bearing set with matching cone and cup for rear inner wheel service
- Premium-grade steel construction for durability in axle applications
- Crowned raceways and rollers help distribute load evenly
- Part number A-46 for straightforward cross-reference and ordering
- Direct fit coverage for Chevrolet Express 3500, GMC Savana 3500, Silverado 3500, Sierra 3500, and related applications
Detailed Description
This National A-46 wheel bearing and race set is built for rear inner positions where tapered roller design is required. The cone and cup are matched as a set, with the cone bearing NP706218 and cup NP910345 specified for this application. Dimensions include a 2.2500-inch cone bore, 3.8125-inch cup bore, and 0.6250-inch width, supporting accurate service replacement on compatible rear axle assemblies. This part cross-references Timken NP706218 for the same application.
Compatible With 2003-2018 Chevrolet Express 3500, rear inner; 2019-2021 Chevrolet Express 3500, rear inner; 2003-2012 GMC Savana 3500, rear inner; 2013-2018 GMC Savana 3500, rear inner; 2021 GMC Savana 3500, rear inner; 2001-2006 Chevrolet Silverado 3500, rear inner; 2007 Chevrolet Silverado 3500 Classic, rear inner; 2008-2009 Chevrolet Silverado 3500, rear inner; 2007-2010 Chevrolet Silverado 3500 HD, rear inner; 2001-2006 GMC Sierra 3500, rear inner; 2007 GMC Sierra 3500 Classic, rear inner; 2007-2010 GMC Sierra 3500 HD, rear inner; 2001 GMC Sierra 1500, rear inner; 2011-2012 GMC Sierra, rear inner.
Common Service Uses
- Rear wheel bearing noise from worn tapered rollers
- Excessive wheel play at the rear inner hub
- Roughness or vibration during wheel rotation
- Race wear that affects bearing preload and hub stability
- Service replacement on dual rear wheel and single rear wheel applications where listed
Installation Notes and Tips
Verify the cone and cup numbers against the removed parts before installation. Clean the hub and spindle thoroughly, inspect the bearing surfaces for scoring, and pack the bearing with the correct wheel bearing grease before assembly. Confirm rear inner position and axle configuration for the specific Chevrolet Express 3500, GMC Savana 3500, Silverado 3500, or Sierra application listed above.
Quality Assurance
National taper bearing sets are manufactured with premium-grade steel and crowned raceways and rollers to support even load distribution. The A-46 is supplied as a matched taper bearing cone and cup set for consistent service replacement.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2021 | Chevrolet | Express 3500 | — | Rear Inner | — |
| 2021 | GMC | Savana 3500 | — | Rear Inner | — |
| 2020 | Chevrolet | Express 3500 | — | Rear Inner | — |
| 2019 | Chevrolet | Express 3500 | — | Rear Inner | — |
| 2018 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2018 | GMC | Savana 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2017 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2017 | GMC | Savana 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2016 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2016 | GMC | Savana 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2015 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2015 | GMC | Savana 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2014 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2014 | GMC | Savana 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2013 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2013 | GMC | Savana 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2012 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2012 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2012 | GMC | Sierra | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2011 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2011 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2011 | GMC | Sierra | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2010 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2010 | Chevrolet | Silverado 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2010 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2010 | GMC | Sierra 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2009 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2009 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2009 | Chevrolet | Silverado 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2009 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2009 | GMC | Sierra 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2008 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2008 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2008 | Chevrolet | Silverado 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2008 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2008 | GMC | Sierra 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2007 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2007 | Chevrolet | Silverado 3500 Classic | — | Rear Inner | with Single Rear Wheels (SRW); Taper Bearing Set Includes Cup and Cone |
| 2007 | Chevrolet | Silverado 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2007 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2007 | GMC | Sierra 3500 Classic | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2007 | GMC | Sierra 3500 HD | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2006 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2006 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2006 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2006 | GMC | Sierra 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2005 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2005 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2005 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2005 | GMC | Sierra 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2004 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2004 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2004 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2004 | GMC | Sierra 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2003 | Chevrolet | Express 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2003 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2003 | GMC | Savana 3500 | — | Rear Inner | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2003 | GMC | Sierra 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2002 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2002 | GMC | Sierra 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2001 | Chevrolet | Silverado 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2001 | GMC | Sierra 1500 | C3 | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2001 | GMC | Sierra 3500 | — | Rear Inner | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
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