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National 204-S Clutch Pilot Bearing
Overview of National 204-S Clutch Pilot Bearing
The National 204-S clutch pilot bearing is engineered for reliable performance in transmission systems requiring precise alignment and smooth operation. Designed as a single row radial ball bearing, it offers durability and consistent function for various vehicle applications, including popular makes and models such as Ford F-150 and Chevrolet Silverado.
- Single row radial design for efficient load handling
- Inner race bore diameter of 0.787 inches (20 mm)
- Outer race outside diameter of 1.850 inches (47 mm)
- Width of 0.551 inches (14 mm) for compact fitment
- Inner and outer race radius of 0.040 inches (1.02 mm) for smooth rotation
- Part number 204-S for precise identification
Technical Specifications and Design Details
The National 204-S clutch pilot bearing features a 200 series single row radial ball bearing design, optimized for supporting the transmission input shaft. The inner race bore measures 0.787 inches (20 mm), matching common input shaft diameters in many light trucks and passenger vehicles. The outer race diameter is 1.850 inches (47 mm), providing a secure fit within the clutch housing. Both inner and outer races have a width of 0.551 inches (14 mm), ensuring a compact profile that maintains proper alignment and reduces wear. The 0.040 inch (1.02 mm) race radii contribute to smooth bearing operation and longevity under typical driving conditions.
Applications and Problem Solving
This clutch pilot bearing is compatible with a range of vehicles requiring a 20 mm bore pilot bearing, including models like the Ford F-150 and Chevrolet Silverado. It is designed to address common issues such as:
- Excessive input shaft vibration during clutch engagement
- Premature wear of transmission input components
- Noise or roughness in the clutch area
- Misalignment between the transmission and engine crankshaft
- Reduced clutch pedal feel and engagement smoothness
Installation Notes and Tips
When installing the National 204-S clutch pilot bearing, ensure the bore and outer diameter dimensions match the vehicle specifications precisely. Proper lubrication and clean installation surfaces are critical to prevent premature failure. Use appropriate tools to press the bearing evenly into the clutch housing without damaging the races. Verify alignment with the transmission input shaft to maintain smooth operation.
Quality Assurance and Warranty
National bearings are manufactured to meet industry standards for durability and performance. The 204-S clutch pilot bearing undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically come with manufacturer-backed quality assurance to support reliable service life in automotive transmission applications.
| Brand | National |
|---|---|
| Part Number | 204-S |
| Bore (Inch) | 0.787 |
| Bore (mm) | 20.000 |
| Design | Single row radial |
| Inner Race Bore (Inch) | 0.787 |
| Inner Race Bore (MM) | 20.000 |
| Inner Race Radius (Inch) | 0.040 |
| Inner Race Radius (MM) | 1.020 |
| Inner Race Width (Inch) | 0.551 |
| Inner Race Width (MM) | 14.000 |
| Outer Race Outside Diameter (Inch) | 1.850 |
| Outer Race Outside Diameter (MM) | 47.000 |
| Outer Race Radius (Inch) | 0.040 |
| Outer Race Radius (MM) | 1.020 |
| Outer Race Width (Inch) | 0.551 |
| Outer Race Width (MM) | 14.000 |
| Outside Diameter (Inch) | 1.850 |
| Outside Diameter (mm) | 47.000 |
| Part Description | Ball bearing |
| Series | 200 |
| Type | A-2 |
| Width (Inch) | 0.551 |
| Width (mm) | 14.000 |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
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* 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.