Product Description
Upgrade the steering strength and control of your Jeep with the PSC SG684R New OEM Cylinder Assist Steering Gearbox designed specifically for the 2007-2018 Jeep Wrangler JK and JKU platform. Built by PSC Steering Components, this heavy-duty steering gearbox is engineered to support hydraulic cylinder assist systems while maintaining OEM-level drivability and steering feel. Featuring PSC’s exclusive Ram Port Tower and -6AN hydraulic ports, the SG684R is the only brand-new OEM-style JK steering gearbox designed from the ground up to integrate with hydraulic steering assist systems. The internal components are reinforced and precision machined to withstand the added loads created by oversized tires, lockers, and aggressive off-road terrain while maintaining smooth and predictable steering response. Unlike remanufactured steering boxes commonly found in the aftermarket, the PSC SG684R is an all-new unit built to solve common steering problems found in lifted Jeep Wrangler JK builds running larger tires. When paired with a PSC steering assist cylinder and high-flow pump, this gearbox dramatically increases turning power while reducing stress on steering components.
Fitment
- 2007 Jeep Wrangler JK
- 2008 Jeep Wrangler JK
- 2009 Jeep Wrangler JK
- 2010 Jeep Wrangler JK
- 2011 Jeep Wrangler JK
- 2012 Jeep Wrangler JK
- 2013 Jeep Wrangler JK
- 2014 Jeep Wrangler JK
- 2015 Jeep Wrangler JK
- 2016 Jeep Wrangler JK
- 2017 Jeep Wrangler JK
- 2018 Jeep Wrangler JK
- Fits Jeep Wrangler Unlimited JKU 4 Door models
- Compatible with PSC hydraulic steering assist systems
Specifications for psc SG684R
| Specification | Details |
|---|---|
| Manufacturer | PSC Steering Components |
| Part Number | SG684R |
| Steering Ratio | 14:1 |
| Ports | -6AN Cylinder Assist Ports |
| Construction | Heavy Duty Cast Iron Housing |
| UPC | 687927183612 |
| GTIN | 687927183612 |
| Shipping Info | Calculated at Checkout |
| Prop 65 | WARNING: Cancer and Reproductive Harm – https://www.P65Warnings.ca.gov |
Frequently Asked Questions
What makes the PSC SG684R steering gearbox different from the factory JK steering box?
The PSC SG684R is engineered specifically for hydraulic cylinder assist systems and heavy off-road use. It includes reinforced internal components and PSC’s Ram Port Tower to connect a hydraulic assist cylinder directly to the gearbox.
Can this steering box be used without a hydraulic assist cylinder?
Yes. The SG684R can be installed as a direct replacement steering gearbox and used without assist initially. The cylinder assist ports are capped and can be used later if you decide to upgrade your steering system.
Will this help with steering issues caused by large tires?
Yes. The PSC steering gearbox is designed to handle the additional load from 35-inch and larger tires while maintaining proper steering feel and control.
Is this steering gearbox brand new or remanufactured?
The PSC SG684R is a brand-new OEM steering gearbox, not a remanufactured unit like many aftermarket replacements.
Do I need additional parts to run cylinder assist?
Yes. To run hydraulic assist you will need a PSC steering assist cylinder, hydraulic hoses, and a high-flow power steering pump compatible with your steering system.
