BBB Industries 503-0135 Steering Gear

Reman Steering Gear for S10 and S15 Applications

BBB Industries Reman Steering Gear Part Number 503-0135 is a remanufactured electric steering gear built for power steering applications on select Chevrolet, GMC, and Oldsmobile vehicles. It is specified for direct replacement use on models such as the Chevrolet S10 Blazer, Chevrolet S10, GMC Jimmy, GMC Sonoma, GMC S15 Jimmy, GMC S15, and Oldsmobile Bravada.

Key Features

• Brand: BBB Industries Reman Steering Gear
• Part Number: 503-0135
• Remanufactured electric steering gear
• Installation kit included
• Input shaft diameter: 0.72 in. / 18.29 mm
• Output shaft diameter: 1.25 in. / 31.75 mm
• Input shaft spline count: 26
• Output shaft spline count: 32
• Pressure port thread size: M18x1.50
• Return port thread size: M16x1.50
• Turns lock to lock: 2.75
• 3 mounting holes

Product Details

BBB Industries Reman Steering Gear 503-0135 is a remanufactured steering gear assembly for power steering systems. The unit uses an electric manual-or-power configuration as listed in the product data, with M18x1.50 inlet and pressure port threads and M16x1.50 outlet and return port threads. Its shaft and spline dimensions are listed to help confirm proper replacement selection, and the 2.75 turns lock to lock specification supports steering response matching for the original application. This part cross-references OE number 19321383 for the same application.

Vehicle Fitment

• Fits 1985-1994 Chevrolet S10 Blazer, power steering.
• Fits 1985-1993 Chevrolet S10, power steering.
• Fits 1992-1994 GMC Jimmy, power steering.
• Fits 1991-1994 Oldsmobile Bravada, power steering.
• Fits 1991-1993 GMC Sonoma, power steering.
• Fits 1985-1991 GMC S15 Jimmy, power steering.
• Fits 1985-1990 GMC S15, power steering.

Common Repair Uses

• Restores steering control when the original gear has excessive play or internal wear
• Addresses steering effort concerns caused by a worn or leaking steering gear
• Replaces a damaged unit with incorrect shaft or port dimensions
• Helps correct steering response issues in Chevrolet S10 and GMC S15 platform vehicles
• Supports repair of power steering systems on older compact truck and SUV applications

Installation Notes and Tips

Verify shaft diameter, spline count, port thread size, and mounting-hole count before installation. Confirm the vehicle is equipped with power steering and compare the original gear to the replacement unit before disassembly. After installation, bleed the steering system according to service procedures and inspect all hydraulic connections for leaks. For long-tail search relevance, this part is commonly selected for reman steering gear replacement on 1985-1994 Chevrolet S10 Blazer, 1985-1993 Chevrolet S10, and related GMC Jimmy and Sonoma applications.

Quality Assurance

BBB Industries supplies this as a remanufactured steering gear, meaning the unit is rebuilt to service replacement standards for the listed applications. Part number 503-0135 is intended for direct-fit replacement where the original steering gear matches the published dimensions and port specifications.