When internal steering gear components wear out, your vehicle's steering may feel vague and floaty, leading to lane drifting and imprecise cornering. Turn back time with a new, not rebuilt, steering box from USA Standard Gear. The cure for vague-feeling, worn out power steering units Engineered to meet or exceed OEM quality Designed for easy bolt-on installation Fits 80-'87 4WD K Series, '80-'91 Blazer/Jimmy, '87-'91 V Series, 9 Spline Output Features and Benefits: The cure for vague-feeling, worn out power steering units Engineered to meet or exceed OEM quality Designed for easy bolt-on installation Fits 80-'87 4WD K Series, '80-'91 Blazer/Jimmy, '87-'91 V Series, 9 Spline Output Details: AAP UDA 12: Ea AAP UDA 22: 1 AAP UDA 4: 60 Color: Black Input Shaft Diameter: 0.73 Input Shaft Spline Quantity: Splined w/ Single Flat & Groove Mounting Hole Quantity: 4 Output Shaft Diameter: 1.25 Output Shaft Spline Quantity: 9 Pitman Arm Included: No Power Assisted: Yes Pressure Port Thread Size: M18 x 1.5 Return Port Thread Size: M16 x 1.5 Total Turns Lock To Lock: 3.4 Application Summary: 1990-1991 Chevrolet Suburban (Steering: Gear & Steering System: Power) 1987-1992 Chevrolet Blazer (Liter: 5.7 & Engine(ci): 350 & Steering: Gear & Steering System: Power) 1980-1986 Chevrolet K5 Blazer (Steering: Gear & Steering System: Power) 1980-1986 Chevrolet K10 (Steering: Gear & Steering System: Power) 1980-1986 Chevrolet K10 Suburban (Steering: Gear & Steering System: Power) 1980-1986 Chevrolet K20 (Steering: Gear & Steering System: Power) 1980-1986 Chevrolet K20 Suburban (Steering: Gear & Steering System: Power) 1980-1986 Chevrolet K30 (Steering: Gear & Steering System: Power) 1987 Chevrolet V10 (Steering: Gear & Steering System: Power) 1987-1988 Chevrolet V10 Suburban (Steering: Gear & Steering System: Power) 1989-1991 Chevrolet V1500 Suburban (Steering: Gear & Steering System: Power) 1987 Chevrolet V20 (Steering: Gear & Steering System: Power) 1987-1988 Chevrolet V20 Suburban (Steering: Gear & Steering System: Power) 1989-1991 Chevrolet V2500 Suburban (Steering: Gear & Steering System: Power) 1987-1988 Chevrolet V30 (Steering: Gear & Steering System: Power) 1989-1991 Chevrolet V3500 (Steering: Gear & Steering System: Power) 1980-1986 GMC K1500 (Steering: Gear & Steering System: Power) 1980-1986 GMC K1500 Suburban (Steering: Gear & Steering System: Power) 1980-1986 GMC K2500 (Steering: Gear & Steering System: Power) 1980-1986 GMC K2500 Suburban (Steering: Gear & Steering System: Power) 1980-1986 GMC K3500 (Steering: Gear & Steering System: Power) 1980-1991 GMC Jimmy (Liter: 5.7, 6.2 & Engine(ci): 350, 379 & Steering: Gear & Steering System: Power)