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  • Black PSC steering gear assembly with a threaded sector shaft and two metal washers, displayed on a white background for a clear product view.
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BIG BORE XD® Steering Gear – RAM 2500/3500/4000 (2003–2008) – PSC Certified Refurbished

BIG BORE XD® Steering Gear – RAM 2500/3500/4000 (2003–2008) – PSC Certified Refurbished

$595.00
$1,195.00 $595.00
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Part Number: SD-SG853

Type

These are PSC Big Bore XD steering gear upgrades for 2003–2008 Dodge Ram 2500 and 3500 trucks, offered as PSC Certified Refurbished units.

Each unit has been inspected, rebuilt where needed, and tested to meet our performance standards. They may show minor cosmetic wear from prior use or handling, but they are fully functional and built to perform the same as our standard units.

This is the same Big Bore XD steering gear designed to handle larger tires, added weight, and tougher use where the factory box starts to fall off. Internals are built for durability and consistent steering feel, especially when the truck is working hard or seeing off-road time.

If you’ve been needing to step up your steering without paying full price for a brand-new unit, this is a solid way to do it.

All refurbished unit sales are final.

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About:About:

Why you’ll love it

  • Same performance as standard Big Bore XD units
  • Good way to save money without giving up performance
  • No More Steering Wander: BIG BORE XD gear features a 45mm sector shaft bearing (vs. 35mm stock) to eliminate slop.
  • Built for Bigger Builds: Cylinder Assist Kit handles the extra torque from oversized tires, lockers, and heavy-duty axles.
  • Road-Friendly Feel: Tuned for daily driving—no twitchy oversteer or arm-wrestling the wheel.
  • Bolt-On or Weld-On Options: Choose what fits your build and install style.
  • Zero Core Charge: All-new parts, no rebuilds, no hassle.

Tech InfoTech Info

Heads‑up for installers

  • Gear works with OEM pressure/return lines and 2003–2008 Pitman arm
  • Cylinder Assist Kit requires welding
  • Not compatible with most aftermarket steering braces (including SB300K)
  • Cosmetic imperfections only—no impact to function
  • May show scratches, scuffs, or finish blemishes
  • Inventory is limited and will vary from piece to piece
  • All sales final on scratch & dent items

Fitment

  • Dodge RAM 2500/3500 (2WD/4WD, Gas or Diesel): 2003–2008
  • Dodge RAM 1500 Mega Cab 4x4: 2005–2008
  • Dodge RAM 4000 (Mexico): 2003–2008 (Cylinder Assist Kit only)

Use it with

  • 37"+ tires
  • Locking differentials
  • Aftermarket axles

Specs

  • BIG BORE XD Gear: 45 mm bearing, direct fit for Mopar 68170214AB
  • Cylinder Assist Kit: Weld-on tower, pre-assembled hoses, PSC-tuned valving

What’s included

BIG BORE XD Steering Gear – New

  • BIG BORE XD Gear with PSC Tuned Valving

BIG BORE XD Cylinder Assist® Steering Gear – New

  • BIG BORE XD Gear with PSC Tuned Valving
  • Cylinder Assist Tower

BIG BORE XD Cylinder Assist Kit – Weld-On

  • PSC Weld-On Assist Cylinder Tower
  • Assist Cylinder

SupportSupport

Installation Video

Installation Video Thumbnail

OEM Cross Reference

Direct replacement for Mopar 68170214AB - SG853

California Prop 65 Warning

California Prop 65 Warning

This product can expose you to chemicals including lead and di (2-ethylhexyl) phthalate, which are known to the State of California to cause cancer, birth defects or other reproductive harm.

For more information, go to www.P65Warnings.ca.gov