National 203-SS Power Steering Pump Shaft Bearing

Overview of National 203-SS Power Steering Pump Shaft Bearing

The National 203-SS power steering pump shaft bearing is engineered for reliable performance in select Toyota and Volkswagen vehicles. Designed as a single row radial ball bearing, it supports smooth steering operation in models like the Toyota Corolla and Volkswagen Jetta.

• Single row radial design for efficient load handling
• Precision bore diameter of 0.669 inches (17 mm)
• Outer diameter measures 1.575 inches (40 mm)
• Width of 0.472 inches (12 mm) for compact fitment
• Compatible with Toyota Celica, Corolla, Corona and Volkswagen Jetta, Pickup, Quantum, Rabbit Convertible, Rabbit Pickup, Vanagon

Technical Specifications and Design Details

The 203-SS bearing features a single row radial ball bearing design optimized for power steering pump shafts. The inner race bore is precisely 0.669 inches (17 mm) with an inner race width of 0.472 inches (12 mm), ensuring a secure fit on the shaft. Both inner and outer race radii are 0.024 inches (0.610 mm), contributing to smooth rotation and reduced friction. The outer race outside diameter is 1.575 inches (40 mm), matching the bearing width of 0.472 inches (12 mm) for a balanced profile. This bearing belongs to the National 200 series and is classified as type A-3, indicating its suitability for automotive steering applications requiring durability and consistent performance.

Compatible Vehicles and Applications

This power steering pump shaft bearing is compatible with a range of Toyota and Volkswagen models, including:

• Toyota Celica, Corolla, Corona
• Volkswagen Jetta, Pickup, Quantum
• Volkswagen Rabbit Convertible, Rabbit Pickup, Vanagon

It is designed to replace worn or damaged bearings in the power steering pump assembly, helping restore proper steering function and reduce noise or vibration.

Common Issues Addressed by the 203-SS Bearing

• Eliminates excessive play or looseness in the power steering pump shaft
• Reduces noise caused by worn or damaged bearings
• Prevents premature wear of the power steering pump components
• Improves steering response and smoothness
• Helps avoid power steering pump failure due to bearing malfunction

Installation Notes and Tips

When installing the National 203-SS bearing, ensure the power steering pump shaft and housing are clean and free of debris. Use appropriate bearing press tools to avoid damage during installation. Verify the bearing orientation matches the original setup, and apply recommended lubrication if specified by the vehicle manufacturer. Proper installation will help maintain bearing longevity and steering system reliability.

Quality Assurance and Warranty

National bearings are manufactured to meet strict automotive standards for durability and precision. The 203-SS bearing undergoes quality control inspections to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to support professional repair confidence.