BBB Industries 503-0129 Steering Gear

Reman Steering Gear for GM Trucks and SUVs

BBB Industries Reman Steering Gear 503-0129 is a remanufactured electric steering gear built for select Chevrolet and GMC full-size trucks and SUVs. It is specified with a 3.063 turns lock-to-lock ratio, 3 mounting holes, and an included installation kit for a direct steering system service on covered applications.

Compatible With Chevrolet C1500, C2500, K1500, K2500, Tahoe, Blazer, and GMC C1500, C2500, K1500, K2500, Yukon applications that use electric steering gear hardware and the listed port and shaft dimensions. This part number, 503-0129, is also referenced under OE and service numbers used across multiple GM steering gear applications.

Key Features

• Remanufactured steering gear from BBB Industries Reman Steering Gear line
• Electric steering gear configuration
• 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: 3.063
• Installation kit included

Detailed Description

BBB Industries 503-0129 is a reman steering gear designed for GM light-duty truck and SUV steering systems that require the listed electric gear configuration. The unit uses an M18x1.50 pressure port, M16x1.50 return port, 26-spline input, and 32-spline output, making it important to verify the original gear dimensions before installation. This steering gear is used across 1988-1995 Chevrolet and GMC C1500, C2500, K1500, K2500, Suburban, Yukon, Tahoe, and Blazer applications listed in the fitment data.

This part cross-references OE/service numbers such as 19321377 and 26003874 for the same application.

Common Steering Issues This Part Can Address

• Excessive steering play or loose on-center feel
• Internal gear wear causing inconsistent steering response
• Fluid leakage at the steering gear ports or seals
• Hard steering or binding caused by worn gear components
• Steering correction problems after replacing related hydraulic components

Installation Notes and Tips

• Verify the vehicle uses power steering and matches the listed steering gear configuration before ordering.
• Confirm input and output shaft spline counts, shaft diameters, and port thread sizes against the original unit.
• Inspect hoses, pitman arm, and related steering components during replacement to avoid repeat labor.
• Use the included installation kit as directed by the vehicle service procedure.
• After installation, perform a full steering alignment and road test.

Quality Assurance

BBB Industries reman steering components are rebuilt to restore proper steering function for covered GM applications. Part number 503-0129 is remanufactured for service replacement use and is identified for multiple Chevrolet and GMC truck and SUV fitments from 1988-1995.

• Fits 1990-1995 Chevrolet C1500, N/A, Power Steering; w/o Sport Package (ZQ8)
• Fits 1992-1995 Chevrolet C1500 Suburban, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1995 Chevrolet C2500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1995 Chevrolet C2500, N/A, Power Steering; w/ 7200lb. GVW (C5Z)
• Fits 1992-1995 Chevrolet C2500 Suburban, N/A, Power Steering; w/ 7200 lb. GVW
• Fits 1988-1995 Chevrolet K1500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1992-1995 Chevrolet K1500 Suburban, N/A, Compatible with vehicles equipped with power steering.
• Fits 1994-1995 Chevrolet K2500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1991 Chevrolet K2500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1995 Chevrolet K2500, N/A, Power Steering; w/ 7200lb. GVW (C5Z)
• Fits 1992-1995 Chevrolet K2500 Suburban, N/A, Power Steering; w/ 7200 lb. GVW
• Fits 1995 Chevrolet Tahoe, N/A, Compatible with vehicles equipped with power steering.
• Fits 1990-1995 GMC C1500, N/A, Power Steering; w/o Sport Package (ZQ8)
• Fits 1992-1995 GMC C1500 Suburban, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1995 GMC C2500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1995 GMC C2500, N/A, Power Steering; w/ 7200lb. GVW (C5Z)
• Fits 1992-1995 GMC C2500 Suburban, N/A, Power Steering; w/ 7200 lb. GVW
• Fits 1988-1995 GMC K1500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1992-1995 GMC K1500 Suburban, N/A, Compatible with vehicles equipped with power steering.
• Fits 1994-1995 GMC K2500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1991 GMC K2500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1995 GMC K2500, N/A, Power Steering; w/ 7200lb. GVW (C5Z)
• Fits 1992-1995 GMC K2500 Suburban, N/A, Power Steering; w/ 7200 lb. GVW
• Fits 1992-1995 GMC Yukon, N/A, Compatible with vehicles equipped with power steering.
• Fits 1992-1994 Chevrolet Blazer, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1989 Chevrolet C1500, N/A, Compatible with vehicles equipped with power steering.
• Fits 1988-1989 GMC C1500, N/A, Compatible with vehicles equipped with power steering.