STEERING BOX KIT, BIG BORE XD - PSC ('94-'02, 2500/3500 4WD)

Item #: PSC-SG852K3
  • About This Product
  • Reviews


The '94-'02 Dodge Ram 2500/3500 4x4 truck steering gears have always had failures to the lower sector shaft bearing and seals due to the single bearing design. This new PSC extreme-duty steering box fixes the problems of the OEM box and is a great part for your truck.

  • Reuses OEM pitman arm
  • 45mm bearing and sector shaft to eliminate any side-to-side flex
  • 16:1 ratio for easier parking and less turns lock-to-lock
  • 85mm piston for more turning force
  • Fits 4WD trucks with both T and Y style steering
  • Has same input shaft as factory gear box so OEM or Borgeson steering shaft is a direct bolt-on
  • Will not work with any steering box braces
The steering gear features a 16:1 ratio for easier parking and less turns lock-to-lock along with a modern variable valve for stable highway driving and effortless maneuvering. A quicker ratio steering gear means 3.5 turns lock-to-lock compared to the factory 3.75 turns lock-to-lock. Features a Big Bore 85mm piston compared to the factory 80mm piston for more turning force.

NOTE: Due to the increased overall size of the Big Bore extreme-duty steering gear spacers are included in the kit to space the gear box off the frame. There is a 1" difference from the OEM steering gear. We suggest trimming the draglink and tierod at pitman arm 1/2" to clear for alignment.

NOTE: This Kit fits the '94-'02 Ram 2500/3500 4WD trucks.

NOTE: This PSC Steering Box Kit is not compatible with any aftermarket steering box braces.

NOTE: This steering box will not work on Cab/Chassis trucks as they use a different chassis than the pickup trucks.


Write a review
PSC steering box upgrade
Jul 31, 2018  |  By Chuck Krause
This is a heavy, massive box compared to OEM is a bit of a challenge to install. Tight fit but is one of the best upgrades I've made to this truck. I love how this truck steers now and is very tight. I love it.

Works good now
May 25, 2018  |  By PAUL
The Steering gear box works great now. But there are no instructtion included. When I first installed it it would turn full lock to the right but only about 30 % to the left. The only way I could get it to work right was to bend the drag link in two places. Not easy as it is one inch thick steel. I had to heat it red hot to bend it. I do have a 2 inch leveling kit installed. This might have been partly at fault. But seems for $700 someone should have figured this out before me. Would rate five stars if some instructions were included. I even called PSC and no one there had hear of my problem or knew what to do even though someone on the internet reported the same problem I had.

PSC Steering Box
May 20, 2018  |  By Chris Harris
I recently ordered the PSC steering box (SG852). I am impressed with how well built this unit is. My steering was much tighter after installing it. Installation of the box is somewhat challenging due to it's enormous size and hefty weight. So far I love it!

Install and Tech Information