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National A-46 Wheel Bearing and Race Set - Rear Inner
National A-46 Wheel Bearing and Race Set Overview
The National A-46 wheel bearing and race set is engineered for reliable driveline performance in Chevrolet and GMC heavy-duty trucks and vans. Designed specifically for models like the Chevrolet Silverado 3500 and GMC Savana 3500, this taper bearing set ensures precise fitment and durability.
- Includes taper bearing cone (NP706218) and cup (NP910345)
- Cone bore diameter: 2.2500 inches (57.15 mm)
- Cone length: 0.8640 inches (21.946 mm)
- Cone radius: 0.2000 inches (5.08 mm)
- Cup bore diameter: 3.8125 inches (96.838 mm)
- Cup length: 0.6250 inches (15.875 mm)
- Cup radius: 0.0300 inches (0.762 mm)
- Overall width: 0.6250 inches (15.875 mm)
- Components are sold as a set and not available separately
Detailed Product Description
The National A-46 wheel bearing and race set is a precision-engineered taper bearing set designed to meet the exact specifications required for Chevrolet and GMC heavy-duty vehicles. The cone and cup components are manufactured to tight tolerances, with a cone bore of 2.2500 inches and a cup bore of 3.8125 inches, ensuring a secure and accurate fit. The cone length of 0.8640 inches and cup length of 0.6250 inches provide the necessary bearing surface for optimal load distribution and longevity. This set is compatible with models including the Chevrolet Express 3500, Silverado 3500 Classic, and GMC Sierra 3500 HD, making it suitable for demanding applications where driveline reliability is critical.
Applications and Problem Solving
- Replaces worn or damaged wheel bearings in Chevrolet Silverado 3500 and GMC Sierra 3500
- Addresses wheel hub noise and vibration issues caused by bearing wear
- Restores proper wheel alignment and rotation for heavy-duty trucks and vans
- Prevents premature wear of axle components by maintaining correct bearing fit
- Ensures safe and stable vehicle handling under heavy load conditions
Installation Notes and Tips
When installing the National A-46 wheel bearing and race set, ensure the bearing surfaces are clean and free of debris. Proper seating of the cone and cup is critical to avoid premature failure. Use appropriate tools to press the bearing components into place without damaging the races. Verify the bearing preload and adjust as necessary according to the vehicle manufacturer’s specifications for Chevrolet and GMC models. Note that the components in this set are not available separately and must be installed as a matched pair.
Quality Assurance and Warranty
National wheel bearing and race sets are manufactured to meet industry standards for durability and performance. The A-46 set undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically conform to OEM quality requirements, offering dependable service life when installed correctly in compatible Chevrolet and GMC vehicles.
| Brand | National |
| Part Number | A-46 |
| 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 |
This part fits 63 vehicles. Search below:
| 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. |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.