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National A-47 Wheel Bearing and Race Set - Rear Outer
National A-47 Wheel Bearing and Race Set Overview
The National A-47 wheel bearing and race set is designed for reliable driveline performance in Chevrolet and GMC vehicles. This taper bearing set is engineered to meet the specific requirements of models like the Chevrolet Express 3500, GMC Savana 3500, and GMC Sierra.
- Includes taper bearing cone (Np145100) and cup (Np913325)
- Cone bore diameter: 2.0000 inches (50.8 mm)
- Cone length: 0.8750 inches (22.225 mm)
- Cone radius: 0.1378 inches (3.5 mm)
- Cup bore diameter: 3.2500 inches (82.55 mm)
- Cup length: 0.6500 inches (16.51 mm)
- Cup radius: 0.5000 inches (12.7 mm)
- Overall width: 0.6500 inches (16.51 mm)
- Components are sold as a set and not available separately
Detailed Product Description
The National A-47 wheel bearing and race set is a precision-engineered taper bearing set designed to provide smooth and consistent wheel rotation for select Chevrolet and GMC vehicles. The cone and cup components are manufactured to exact specifications, including a cone bore of 2.0000 inches and a cup bore of 3.2500 inches, ensuring proper fit and function. The cone length of 0.8750 inches and cup length of 0.6500 inches contribute to the bearing's ability to handle axial and radial loads effectively. This set is compatible with the Chevrolet Express 3500, GMC Savana 3500, and GMC Sierra models, making it a suitable replacement part for maintaining driveline integrity.
Common Applications and Problem Resolution
- Replaces worn or damaged wheel bearings in Chevrolet Express 3500 and GMC Savana 3500
- Addresses wheel noise or rough rotation issues in GMC Sierra vehicles
- Restores proper wheel alignment and reduces vibration caused by bearing wear
- Prevents premature wear of axle components by maintaining correct bearing fit
- Eliminates play or looseness in the wheel hub assembly
Installation Notes and Tips
- Ensure the wheel hub and spindle are clean and free of debris before installation
- Use proper tools to press the bearing cone and cup into place without damage
- Apply appropriate lubrication to the bearing surfaces during assembly
- Torque the wheel bearing nut to manufacturer specifications to avoid over-tightening
- Verify correct bearing preload to ensure optimal performance and longevity
Quality Assurance and Warranty
National wheel bearing and race sets are manufactured to meet industry standards for durability and performance. The A-47 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in the product's reliability for Chevrolet Express 3500, GMC Savana 3500, and GMC Sierra applications.
| Brand | National |
|---|---|
| Part Number | A-47 |
| Cone Bore (Inch) | 2.0000 |
| Cone Bore (MM) | 50.8000 |
| Cone Length (Inch) | 0.8750 |
| Cone Length (MM) | 22.2250 |
| Cone Radius (Inch) | 0.1378 |
| Cone Radius (MM) | 3.5000 |
| Cup Bore (Inch) | 3.2500 |
| Cup Bore (MM) | 82.5500 |
| Cup Length (Inch) | 0.6500 |
| Cup Length (MM) | 16.5100 |
| Cup Radius (Inch) | 0.5000 |
| Cup Radius (MM) | 12.7000 |
| Footnote | Components Not Available Seperately |
| Part Description | Taper Bearing Set |
| Taper Bearing Cone | NP145100 |
| Taper Bearing Cup | NP913325 |
| Width (Inch) | 0.6500 |
| Width (mm) | 16.5100 |
This part fits 40 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2021 | Chevrolet | Express 3500 | Rear Outer | |
| 2021 | GMC | Savana 3500 | Rear Outer | |
| 2020 | Chevrolet | Express 3500 | Rear Outer | |
| 2020 | GMC | Savana 3500 | Rear Outer | |
| 2019 | Chevrolet | Express 3500 | Rear Outer | |
| 2019 | GMC | Savana 3500 | Rear Outer | |
| 2018 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2018 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2017 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2017 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2016 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2016 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2015 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2015 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2014 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2014 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2013 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2013 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2012 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2012 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2012 | GMC | Sierra | Rear Outer | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2011 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2011 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2011 | GMC | Sierra | Rear Outer | Tapered wheel bearing and race set with cup and cone design for optimal fitment. |
| 2010 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2010 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2009 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2009 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2008 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2008 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2007 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2007 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2006 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2006 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2005 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2005 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2004 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2004 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2003 | Chevrolet | Express 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
| 2003 | GMC | Savana 3500 | Rear Outer | With Dual Rear Wheels; Taper Bearing Set Includes Cup and Cone |
* 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.