USE OF THIS STEERING BOX REQUIRES A 4 SPLINE PITMAN ARM. We recommend the Kryptonite 4 spline pitman arm:
NOTE FOR 2007.5-2010 LMM DURAMAX TRUCKS: on some trucks, the factory steering shaft will not fit the PSC gearbox. To fix this, you will need a new lower steering shaft, available by clicking HERE
The OEM steering gear in these trucks have always been a problem until now. PSC introduces the XD steering gear featuring a 45mm sector shaft and bearing to prevent the pitman arm and sector shaft to flex and cause 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 GM truck. This steering gear is also offered in a ported and balanced version for the SAS trucks that need the cylinder assist option. Offered only in a 4 spline sector shaft, if you have a 3 spline sector shaft you will need a new pitman arm.
100% New. Not a reman box like others on the market.