The PSC SG038 XD Steering Box fits 2001-2010 GM 2500HD/3500HD 6.6L Duramax 4WD trucks with the 4 Groove 32 Spline input. It replaces a worn or problematic factory steering gear that lets the truck wander and leaves slack in the steering wheel. Flex in the factory sector shaft and pitman arm under load is a common cause of loose, vague steering on these trucks.

The SG038 is a brand-new unit, not a remanufactured box. It is built around a 45mm sector shaft and bearing that resists flex at the pitman arm. Larger gear teeth and internal components handle higher steering loads for tighter, more consistent response.

Key Features & Benefits

• 45mm Sector Shaft and Bearing: Prevents flex in the sector shaft and pitman arm for firm, predictable steering.
• Larger Teeth and Internals: Built to carry increased loads from big tires and heavy use.
• Brand-New Construction: A new steering box, not a rebuilt factory core.
• Direct Replacement: Bolts in place of the factory steering box.
• Pitman Arm Compatibility: Fits 4 spline pitman arms for easy installation.

Technical Specifications

• Manufacturer / Brand: PSC Motorsports
• Part Number: SG038
• Product Type: XD Steering Gear Box
• Sector Shaft: 45mm with bearing
• Input: 4 Groove 32 Spline
• Truck Compatibility: 2001-2010 GM 2500HD/3500HD 4WD
• Engine Platform: 6.6L Duramax

Vehicle Fitment & Technical Installation Notes

Fits 2001-2010 GM 2500HD/3500HD 6.6L Duramax 4WD trucks with the 4 Groove 32 Spline steering box.

Installation Tip: Center the steering wheel and front wheels before removing the factory box, and mark the pitman arm position so it indexes correctly on the new sector shaft. Torque all mounting bolts and the pitman arm nut to factory spec, then check the alignment after install.