National 203-SS Power Steering Pump Shaft Bearing

National 203-SS Power Steering Pump Shaft Bearing

The National 203-SS is a single row radial ball bearing built to OE-quality standards for steering and accessory-drive service. With a 17 mm bore and 40 mm outside diameter, it is sized for applications that call for a precise shaft bearing fit and dependable rotation.

Designed for Volkswagen and Toyota applications listed below, this National 203-SS bearing supports smooth operation in vehicles such as the Volkswagen Rabbit Pickup and Toyota Corolla. It is engineered for consistent bearing life in demanding underhood environments.

Key Features

• Power steering pump shaft bearing / ball bearing design
• Single row radial construction for stable shaft support
• 17.000 mm bore and 40.000 mm outside diameter
• 12.000 mm width for compact fitment
• OE-quality replacement from National
• Cross-reference: Timken 203SS

Detailed Description

National 203-SS is a precision ball bearing in the 200 series, Type A-3, with a 0.669 inch bore, 1.575 inch outside diameter, and 0.472 inch width. The inner and outer race geometry is matched for controlled radial support, helping maintain smooth shaft movement where a power steering pump shaft bearing is specified. National manufactures this bearing to exacting standards to meet or exceed OE quality expectations.

Fitment coverage includes 1980-1983 Volkswagen Rabbit Pickup, 1980-1983 Volkswagen Vanagon, 1980-1983 Volkswagen Rabbit Convertible, 1980-1981 Volkswagen Jetta, 1982-1983 Volkswagen Quantum, and Toyota applications such as the 1975-1979 Corolla, 1975-1977 Pickup, 1971-1976 Celica, and 1973-1976 Corona. This National 203-SS part number is also referenced in aftermarket catalogs for related bearing applications.

Common Uses

• Replacing a worn or noisy shaft bearing in a power steering pump assembly
• Restoring smooth pump rotation and reducing shaft play
• Addressing bearing noise, roughness, or vibration in the pump area
• Supporting proper operation in Volkswagen Rabbit Pickup and Vanagon service applications
• Supporting Toyota Corolla, Celica, Corona, and Pickup service applications

Installation Notes and Tips

Verify bore, outside diameter, and width before installation to confirm the bearing matches the shaft and housing dimensions. Inspect the shaft, race surfaces, and surrounding components for wear or scoring before pressing in the replacement bearing. Use proper bearing installation tools and avoid applying force through the rolling elements. Confirm the vehicle’s alternator and shield-style notes in the fitment data when matching the application.

Quality Assurance

National designs this bearing to meet or exceed OE quality and manufactures it to exacting standards for lasting performance and extended bearing life. The 203-SS is built for consistent fit and dependable service in the listed Volkswagen and Toyota applications.

Compatible Vehicles

• Fits 1982-1983 Volkswagen Quantum, N/A, Two Shield Style; with Bosch Alternator; with 55, 65 Amp Alternator
• Fits 1980-1983 Volkswagen Rabbit Convertible, N/A, Two Shield Style; with Bosch Alternator; with 55, 65 Amp Alternator
• Fits 1980-1983 Volkswagen Rabbit Pickup, N/A, Two Shield Style; with Bosch Alternator; with 35,45,55,65 Amp Alternator
• Fits 1980-1983 Volkswagen Vanagon, N/A, Two Shield Style; with Bosch Alternator; with 35,45,55,65 Amp Alternator
• Fits 1980-1981 Volkswagen Jetta, N/A, with Motorola Alternator; with 55, 65 Amp Alternator
• Fits 1980-1981 Volkswagen Jetta, N/A, Two Shield Style; with Motorola Alternator; with 55, 65 Amp Alternator
• Fits 1975-1979 Toyota Corolla, N/A, Two Shield Style; with Nippondenso Alternator; with 45 Amp Alternator
• Fits 1975-1977 Toyota Pickup, N/A, Two Shield Style; with Nippondenso Alternator; with 40 Amp Alternator
• Fits 1971-1976 Toyota Celica, N/A, Two Shield Style; with Nippondenso Alternator; with 45 Amp Alternator
• Fits 1973-1976 Toyota Corona, N/A, Two Shield Style; with Nippondenso Alternator; with 45 Amp Alternator