Product Description
Upgrade the steering performance of your heavy-duty RAM truck with the PSC SG856 Big Bore XD Power Steering Gearbox. Designed specifically for 2009–2014 Dodge Ram 2500 and 3500 trucks, this extreme-duty steering gearbox eliminates common steering problems such as sector shaft deflection, loose steering feel, and premature gearbox wear. Built from an all-new PSC proprietary housing—not a rebuilt core—the SG856 features a massive 45mm sector shaft and upgraded support bearing that dramatically reduce side-to-side shaft movement. This delivers tighter steering response, improved road control, and extended service life compared to factory steering boxes. The upgraded 80mm piston assembly produces increased hydraulic torque output, allowing your Ram truck to handle oversized tires, heavy towing loads, and locking differentials with ease. With a refined steering ratio and direct bolt-in design, the SG856 installs using the factory pitman arm and OEM hydraulic hoses, making it a straightforward performance upgrade for both work trucks and off-road builds.
Fitment
- 2009 Dodge Ram 2500
- 2010 Dodge Ram 2500
- 2011 Ram 2500
- 2012 Ram 2500
- 2013 Ram 2500
- 2014 Ram 2500
- 2009 Dodge Ram 3500
- 2010 Dodge Ram 3500
- 2011 Ram 3500
- 2012 Ram 3500
- 2013 Ram 3500
- 2014 Ram 3500
- Fits 2WD and 4WD trucks without LaneSense lane departure system
Specifications for PSC SG856
| Specification | Details |
|---|---|
| Manufacturer | PSC Steering Components |
| Part Number | SG856 |
| UPC | 687927184138 |
| GTIN | 687927184138 |
| Steering Ratio | 13:1 Steering Ratio |
| Sector Shaft Diameter | 45mm |
| Mounting | 3-Bolt Inside Frame Mount |
| Shipping Info | Free Shipping |
| Prop 65 | WARNING: Cancer and Reproductive Harm – https://www.P65Warnings.ca.gov |
Frequently Asked Questions
What makes the PSC SG856 better than the factory steering box?
The SG856 uses a much larger 45mm sector shaft and heavy-duty support bearing which eliminates sector shaft deflection and dramatically improves steering stability.
Is the PSC SG856 a rebuilt steering gearbox?
No. The SG856 is built from an all-new PSC housing and components, not a remanufactured core.
Does this steering gearbox require aftermarket steering braces?
No. The PSC Big Bore XD design is strong enough to eliminate the need for most aftermarket steering braces.
Will this steering box work with factory hoses and pitman arm?
Yes. The SG856 is designed as a direct bolt-in replacement and works with the factory hydraulic lines and pitman arm.
Will this work on trucks equipped with LaneSense?
No. Vehicles equipped with LaneSense Lane Departure Warning are not compatible with the SG856 steering gearbox.
