Yukon Gear Dura Grip For Chrysler 9.25in Rear

Yukon Gear DuraGrip Limited Slip Differential for Chrysler 9.25 Inch Rear

Built for Dodge Ram, Dodge Dakota, Dodge Durango, and Chrysler Aspen owners who demand traction in all conditions, the YDGC9.25-31-1 Yukon Gear DuraGrip is a clutch-style limited slip differential for the Chrysler 9.25 inch rear axle with 31-spline axle shafts. Part number YDGC9.25-31-1 replaces worn factory open differentials or factory limited slip units that have lost their grip, restoring confident traction on slick roads, trails, and jobsites. Assembled in the USA, this YDGC9.25-31-1 unit features a high-strength nodular iron case, forged 4320 chromoly spider gears, and composite clutch packs for smooth, progressive torque transfer without the chatter common in lesser limited slip designs.

Features and Benefits

• Fits Chrysler 9.25 inch rear differential with 31-spline axle shafts (2010 and down)
• Compatible with all gear ratios on this differential housing
• 12-bolt ring gear cover for proper carrier identification
• 4-spring, clutch-style positraction design for smooth, progressive torque transfer
• Forged 4320 chromoly steel spider gears for superior strength and durability
• High-strength nodular iron case resists cracking under high-load conditions
• Composite clutch packs reduce chatter and extend service life compared to fiber clutches
• Fully rebuildable design allows clutch pack replacement without purchasing a new unit
• Proudly assembled in the United States
• One-year warranty against manufacturer defects

Vehicle Fitment

Specifications

What Is Included

• One fully assembled DuraGrip limited slip differential carrier
• Composite clutch packs pre-installed
• Forged 4320 chromoly spider gears installed

Frequently Asked Questions

What year Dodge Ram trucks does the YDGC9.25-31-1 fit?
The YDGC9.25-31-1 fits Dodge Ram 1500 trucks from approximately 1994 through 2010 equipped with the Chrysler 9.25 inch rear axle and 31-spline axle shafts. This is the pre-ZF (2010 and earlier) version of the 9.25 axle.

Is there a 2011 and up version?
Yes. For 2011 and newer Ram 1500 with the 9.25 ZF rear axle, you need part number YDGC9.25ZF-31-1. The YDGC9.25-31-1 fits the earlier non-ZF Chrysler 9.25 housing only.

Does YDGC9.25-31-1 work with all gear ratios?
Yes. The YDGC9.25-31-1 is compatible with all available gear ratios for the Chrysler 9.25 inch rear differential, including 3.21, 3.55, and 3.92.

What is the difference between a limited slip and a locker?
A limited slip like the YDGC9.25-31-1 allows some differentiation between wheels during turns while still transferring torque to the wheel with better traction. A locker completely locks both axle shafts together. For street and light off-road use, a limited slip is generally preferred.

What gear oil does Yukon recommend for YDGC9.25-31-1?
Yukon recommends a high-grade non-synthetic GL-5 gear oil along with Yukon LSD additive (part number OILADD). Synthetic oil is not recommended and may cause aggressive or noisy clutch engagement.

Can I rebuild the YDGC9.25-31-1 clutch pack when it wears out?
Yes. The DuraGrip design is fully rebuildable. Replacement clutch packs and springs are available separately so you do not need to purchase a new unit when the clutch material wears down.

Does the Magnuson-Moss Warranty Act apply to this installation?
Under the Magnuson-Moss Warranty Act, installing an aftermarket limited slip differential such as the YDGC9.25-31-1 does not automatically void your vehicle warranty. The dealer must demonstrate that the aftermarket part caused the specific failure before denying a warranty claim.

Do I need to replace my axle bearings when installing YDGC9.25-31-1?
It is best practice to inspect and replace carrier bearings and races when installing a new differential carrier. New bearings ensure correct preload and prevent premature failure of the new unit.

Installation Instructions

1. Safely lift and support the vehicle. Place a drain pan and remove the differential cover to drain fluid.
2. Remove the rear axle shafts and driveshaft.
3. Mark differential bearing caps with a center punch before disassembly to ensure reinstallation on the same side.
4. Remove bearing cap bolts and carefully remove the carrier assembly with side bearing shims. Keep shims organized by side.
5. Transfer the ring gear from the old carrier to the new YDGC9.25-31-1 carrier, using new ring gear bolts and correct torque (approximately 80 ft-lb for this application).
6. Reinstall the carrier with the original side bearing shims. Verify backlash with a dial indicator (typically 0.005 to 0.010 inch for Chrysler 9.25).
7. Check and adjust carrier bearing preload as needed.
8. Verify gear contact pattern with gear marking compound.
9. Reinstall the differential cover with fresh RTV or a new gasket. Fill with GL-5 gear oil plus Yukon LSD additive.
10. Reinstall axle shafts and driveshaft. Torque all fasteners to specification.
11. Perform a test drive. Listen for unusual noise and recheck fluid level after 500 miles.

Proposition 65 Warning: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.