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Yukon Gear Pinion Depth Shims for GM, Ford and Chrysler Differentials
The SK 25300 from Yukon Gear and Axle is a universal pinion depth shim kit engineered to cover six popular differential applications in a single package. Part number SK 25300 fits the GM 8.25in IFS, GM 8.5in, GM 12-bolt car, Ford 7.5in, Ford 8.8in, and Chrysler 8.25in differentials. Having SK 25300 on the shelf means a shop can handle pinion depth adjustments across the most common domestic diffs without stocking multiple individual shim sets. The kit includes 10 assorted shims in various thicknesses so technicians can dial in precise pinion depth during ring-and-pinion installation.
Features and Benefits
- Covers 6 differential applications: GM 8.25in IFS, GM 8.5in, GM 12-bolt car, Ford 7.5in, Ford 8.8in, and Chrysler 8.25in
- Includes 10 assorted-thickness shims for precise pinion depth adjustment
- Manufactured to Yukon Gear tolerances for accurate gear mesh setup
- Universal kit reduces inventory requirements for multi-line shops
- Proper pinion depth setting protects ring-and-pinion gear life and reduces noise
- Compatible with new gear installations and bearing replacements requiring depth re-verification
Compatible Differentials
| Differential | Application |
|---|---|
| GM 8.25in IFS | Front independent suspension trucks and SUVs |
| GM 8.5in 10-bolt | Rear axle, cars and light trucks |
| GM 12-bolt Car | Rear axle, muscle cars and full-size cars |
| Ford 7.5in | Rear axle, compact trucks and cars |
| Ford 8.8in | Rear axle, F-150, Mustang, Explorer and more |
| Chrysler 8.25in | Rear axle, Dodge trucks and Jeep |
Specifications
| Specification | Detail |
|---|---|
| Part Number | SK 25300 |
| UPC | 883584550099 |
| Kit Type | Pinion Depth Shims |
| Shim Count | 10 assorted thicknesses |
| Compatible Diffs | GM 8.25in IFS, GM 8.5in, GM 12-bolt, Ford 7.5in, Ford 8.8in, Chrysler 8.25in |
| Warranty | Yukon Gear limited warranty |
What's Included
- 10x pinion depth shims in assorted thicknesses
Frequently Asked Questions
Q: What differentials does the SK 25300 fit?
A: The SK 25300 is compatible with the GM 8.25in IFS, GM 8.5in 10-bolt, GM 12-bolt car, Ford 7.5in, Ford 8.8in, and Chrysler 8.25in differentials.
Q: How many shims are included in the SK 25300 kit?
A: The SK 25300 includes 10 pinion depth shims in assorted thicknesses to provide the adjustment range needed for accurate pinion depth setting.
Q: Why is correct pinion depth important?
A: Correct pinion depth ensures the ring gear and pinion mesh at the optimal contact pattern, which directly affects gear life, noise levels, and differential longevity.
Q: Can I use SK 25300 with a Ford 8.8in Mustang or F-150 differential?
A: Yes. The SK 25300 includes shims compatible with the Ford 8.8in differential used across F-150, Mustang, Explorer, and many other Ford applications.
Q: Is this kit appropriate for a Chrysler 8.25in rear axle?
A: Yes. The SK 25300 covers the Chrysler 8.25in differential found in Dodge Dakota, Durango, Ram 1500, and various Jeep models.
Q: Does this product come with a warranty?
A: Yes. Yukon Gear products are backed by a limited warranty. Per the Magnuson-Moss Warranty Act, using Yukon Gear service components does not void your vehicle factory warranty when parts are properly installed.
Q: Is professional installation recommended?
A: Pinion depth setting requires precision measuring tools including a dial indicator and depth micrometer. Professional installation is recommended to ensure accurate results.
Q: Is this a vehicle-specific or universal kit?
A: The SK 25300 is a universal kit that covers multiple differential families, making it ideal for shops that service a variety of domestic vehicles.
Installation Instructions
- Identify the differential being serviced and confirm it matches one of the SK 25300 compatible applications.
- Remove the differential carrier and existing pinion depth shim from behind the pinion bearing cup.
- Using a dial indicator and pinion depth gauge, measure the required shim thickness for the new ring-and-pinion set.
- Select the appropriate shim(s) from the SK 25300 kit to achieve the specified pinion depth reading.
- Install the selected shim(s) behind the pinion bearing cup in the differential housing.
- Press the pinion bearing cup into the housing over the installed shim(s).
- Reassemble the differential with the new pinion and ring gear, verifying the gear contact pattern with marking compound before final assembly.
- Complete final assembly, set pinion preload per manufacturer specifications, and torque all fasteners to spec.
- Fill differential to proper level with the correct fluid and check for leaks before returning to service.
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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Yukon Gear & Axle provides the highest quality aftermarket drivetrain parts in the industry. Yukon products are produced using superior materials and built to tolerances that exceed OE specifications. We do drivetrain right! Yukon manufactures high performance ring & pinions, positractions, lockers, axle upgrades, rebuild kits, hubs, driveshafts, diff covers, and more. Proven at the King of the Hammers and the granite crags and outcrops of Moab, Yukon products are built for abuse so you can gear up and wheel with confidence. At Yukon Gear & Axle we make it our Mission to build quality parts that exceed expectation. It’s that simple! Our in-house engineering group utilizes state-of-the-art software to design product that’s then manufactured in partnership by some of the world’s foremost leaders in OEM manufacturing. After rigorous testing and intense quality inspection, we’re proud to call it Yukon.
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