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Yukon Gear Minor Install Kit for Chrysler 9.25in Rear Differential
Complete your Chrysler 9.25in rear differential rebuild with the essential consumables in one convenient package using the Yukon Gear MK C9.25-R Minor Install Kit. The YUKMK C9.25-R is specifically engineered for the Chrysler 9.25in rear axle found in a broad range of Dodge and Chrysler trucks, vans, SUVs, and cars from 1967 through 2010. This kit includes the pinion seal, crush sleeve, Supershim kit, and marking compound with brush needed to do the job correctly, whether you are swapping gears or refreshing an existing setup.
Features and Benefits
- Purpose-built for the Chrysler 9.25in rear differential used in Dodge and Chrysler vehicles from 1967-2010
- New pinion seal prevents oil weeping or leaks at the pinion flange
- Crush sleeve maintains proper pinion bearing preload during reassembly
- Supershim kit provides multiple thickness options for precise pinion depth adjustment
- Marking compound and brush for gear mesh contact pattern verification
- All components meet or exceed OEM specifications for the Chrysler 9.25in axle
- Covered by Yukon Gear's limited warranty
Vehicle Fitment
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 1967-1993 | Dodge | D100 / D150 / D200 / D250 | Chrysler 9.25in rear diff |
| 1967-1993 | Dodge | W100 / W150 / W200 / W250 | Chrysler 9.25in rear diff |
| 1972-1993 | Dodge | B100 / B150 / B200 / B250 Van | Chrysler 9.25in rear diff |
| 1974-1993 | Dodge | Ramcharger | Chrysler 9.25in rear diff |
| 1980-2010 | Dodge | Ram 1500 / Ram 2500 | Chrysler 9.25in rear diff |
| 1987-2010 | Dodge | Dakota | Chrysler 9.25in rear diff |
| 1998-2010 | Dodge | Durango | Chrysler 9.25in rear diff |
| 1967-1977 | Plymouth | Barracuda / GTX / Road Runner / Satellite | Chrysler 9.25in rear diff |
| 1967-1973 | Dodge | Charger / Challenger / Dart | Chrysler 9.25in rear diff |
| 1967-1977 | Mitsubishi | Various models | Chrysler 9.25in rear diff |
Specifications
| Specification | Detail |
|---|---|
| Part Number | MK C9.25-R |
| UPC | 883584120087 |
| Differential | Chrysler 9.25in Rear |
| Kit Type | Minor Install Kit |
| Warranty | Yukon Gear Limited Warranty |
What's Included
- Pinion seal
- Crush sleeve
- Supershim kit (assorted shims)
- Marking compound
- Marking brush
Frequently Asked Questions
What differential does the MK C9.25-R fit?
The YUKMK C9.25-R is designed for the Chrysler 9.25in rear differential, one of the most widely used rear axles across Dodge and Chrysler truck, van, SUV, and car platforms from 1967 through 2010.
Does this kit include bearings?
No. The MK C9.25-R is a minor install kit providing the pinion seal, crush sleeve, shims, and marking compound. For a full rebuild with pinion and carrier bearings, a master install kit is recommended.
Can I use the YUKMK C9.25-R for a ring and pinion swap?
Yes. It provides all the consumable components required for completing a ring and pinion installation on a Chrysler 9.25in rear differential correctly and leak-free.
Will this void my vehicle warranty?
Under the Magnuson-Moss Warranty Act, a vehicle manufacturer cannot void your warranty simply because you used an aftermarket part unless they can prove it caused a failure. Proper installation of the YUKMK C9.25-R should not void your drivetrain warranty.
What is the Supershim kit for?
The Supershim kit provides a range of shim thicknesses for setting the correct pinion depth during assembly. Using the marking compound, you can verify the gear mesh contact pattern and select the appropriate shim to achieve the ideal pattern.
What pinion preload should I target for the Chrysler 9.25in?
For the Chrysler 9.25in differential with new bearings, pinion preload is typically in the range of 10-20 inch-pounds rolling preload. Always confirm with the OEM service manual for your specific application year.
Is the crush sleeve in this kit a standard replacement?
Yes. The crush sleeve included in the MK C9.25-R is a standard replacement unit suitable for service rebuilds. For those who prefer a reusable, exact-preload solution, a crush sleeve eliminator kit is available separately.
What gear oil should I use after using the MK C9.25-R?
The Chrysler 9.25in differential typically requires 75W-90 or 75W-140 synthetic gear oil. Check the vehicle owner's manual for the correct specification, and use a friction modifier additive if the axle is equipped with a Sure-Grip limited-slip differential.
Installation Instructions
- Safely lift and support the vehicle, then drain the differential fluid
- Remove the driveshaft and mark its orientation at the pinion flange for reinstallation
- Remove the pinion nut, pinion flange, and old pinion seal from the housing
- Remove the original crush sleeve from the pinion shaft and discard
- Clean all mating surfaces and inspect bearing races for wear or damage
- Install the new crush sleeve from the YUKMK C9.25-R kit onto the pinion shaft
- Press the new pinion seal into the housing with the sealing lip facing inward
- Reinstall the pinion flange and torque the pinion nut incrementally, monitoring rolling preload with an inch-pound torque wrench
- Apply marking compound to the ring gear with the included brush and verify the gear mesh contact pattern, adjusting shims as needed
- Reinstall the differential cover with a fresh gasket or RTV sealant and fill with the correct differential fluid
Proposition 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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