Replace a non working or worn out gear box with this quality reproduction power steering gear box. This steering box contains no remanufactured parts. It features an all new main casting, sector shaft, and internals. Every box 100% tested for leaks, function, and performance. Replace that worn steering box with a brand new unit and experience the difference in steering handling and performance. Replaces OE #'s 7846959, 19321369 or competitor #'s 1263, 27-7524.
Specifications: 503-0121
Metric o-ring type pressure and return ports
4 bolt cover
3 to 3-1/2 turns lock to lock
3/4" input shaft
Input Shaft Diameter: 0.787 in (19.99 mm)
Input Shaft Spline Quantity: 25
Output Shaft Diameter: 1.25 in (31.75 mm)
Output Shaft Spline Quantity: 9
Mounting Hardware Included: No
Power Assisted: Yes
Pressure Port Thread Size: 18 × 1.5 (17.73 mm)
Return Port Thread Size: 16 × 1.5 (15.75 mm)
Additional Information
Important: The casting on this steering box may differ in appearance from the factory box but will fit and function the same or better than the original.
Chevrolet Truck Applications
1987 - 1991 Chevrolet Blazer
1980 - 1986 Chevrolet K10
1980 - 1986 Chevrolet K10 Suburban
1980 - 1986 Chevrolet K20
1980 - 1986 Chevrolet K20 Suburban
1980 - 1986 Chevrolet K30
1980 - 1986 Chevrolet K5 Blazer
1987 - 1987 Chevrolet R10
1987 - 1988 Chevrolet R10 Suburban
1989 - 1991 Chevrolet R1500 Suburban
1987 - 1988 Chevrolet R20
1987 - 1988 Chevrolet R20 Suburban
1989 - 1989 Chevrolet R2500
1989 - 1991 Chevrolet R2500 Suburban
1987 - 1988 Chevrolet R30
1989 - 1991 Chevrolet R3500
1980 - 1991 Chevrolet Truck
GMC Truck Applications
1980 - 1991 GMC Jimmy
1980 - 1986 GMC K1500
1980 - 1986 GMC K1500 Suburban
1980 - 1985 GMC K2500
1980 - 1986 GMC K2500 Suburban
1980 - 1986 GMC K3500
1980 - 1991 GMC Truck
1987 - 1987 GMC V1500
1987 - 1991 GMC V1500 Suburban
1987 - 1987 GMC V2500
1987 - 1991 GMC V2500 Suburban
1987 - 1991 GMC V3500
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
