The PSC SG039 XD Steering Box is an upgrade for the problematic factory unit in your 2001-2007 GM 2500HD/3500HD 4WD Pickup. The PSC XD Steering Gear features a 45mm sector shaft and bearing to prevent the pitman arm and sector shaft flex that causes the lower seal to fail. Larger teeth and other internal components have been increased in size to handle the loads when increasing tire size on your truck. Fits 4 spline pitman arms only.
New, Not Remanufactured
This steering box is offered only with a 4 spline sector shaft, if you have a 3 spline sector shaft you will need a new pitman arm.
2007 fitment refers to Classic body style only.