Yukon Gear Master Overhaul Kit For 99-13 GM 8.25in IFS Diff

Yukon YK GM8.25IFS-B GM 8.25in IFS Differential Complete Rebuild Kit

The YK GM8.25IFS-B from Yukon Gear and Axle is the definitive master overhaul kit for the GM 8.25-inch independent front suspension differential used across a wide range of 1999 through 2017 General Motors trucks and SUVs. When your IFS front differential shows signs of wear, noisy bearings, or fluid leaks, the YK GM8.25IFS-B delivers every component needed for a thorough, professional-grade complete rebuild kit. Timken bearings, a full shim set, all seals, and every piece of hardware are included in one comprehensive package. Stop hunting for individual parts and get the YK GM8.25IFS-B to put your GM truck or SUV back on the road with confidence.

Features and Benefits

• Engineered specifically for the GM 8.25-inch IFS differential used in 1999-2017 GM trucks and SUVs
• Timken carrier bearings and races for superior load handling and long service life
• Timken pinion bearings and races for accurate pinion depth and smooth operation
• Complete pinion depth shim set for correct gear mesh and reduced noise
• Complete carrier shim set for precise backlash and bearing preload adjustment
• Pinion seal and axle seals to eliminate fluid leaks
• Ring gear bolts, pinion nut, and crush sleeve for a complete hardware refresh
• Gear marking compound with brush and thread-locking compound included
• Differential cover gasket for a leak-free reassembly
• Compatible with OEM and aftermarket ring and pinion gear sets
• All components meet Yukon Gear quality standards

Vehicle Fitment

Specifications

What Is Included

• Timken front carrier bearing and race
• Timken rear carrier bearing and race
• Timken inner pinion bearing and race
• Timken outer pinion bearing and race
• Pinion seal
• Axle seals (pair)
• Complete pinion depth shim set
• Complete carrier shim set
• Ring gear bolt set
• Pinion nut
• Crush sleeve
• Thread-locking compound
• Gear marking compound with brush
• Differential cover gasket

Frequently Asked Questions

What vehicles does the YK GM8.25IFS-B fit?
The YK GM8.25IFS-B is designed for 1999 through 2017 GM trucks and SUVs equipped with the 8.25-inch independent front suspension differential, including Chevrolet Silverado 1500, Tahoe, Suburban, GMC Sierra 1500, Yukon, and Cadillac Escalade models.

What is the difference between YK GM8.25IFS-B and YK GM8.25IFS-C?
Both kits serve the GM 8.25-inch IFS differential. The YK GM8.25IFS-B covers the broader 1999-2017 application range, while the YK GM8.25IFS-C targets a specific subset of those years. Confirm your vehicle year and differential casting to select the correct kit.

Does the YK GM8.25IFS-B include Timken bearings?
Yes. The YK GM8.25IFS-B includes Timken carrier bearings with races and Timken pinion bearings with races, providing the durability and precision that professional rebuilders demand.

Can I use the YK GM8.25IFS-B with aftermarket ring and pinion gears?
Yes. The complete shim set included with the YK GM8.25IFS-B allows for proper setup regardless of whether you are using OEM replacement gears or aftermarket performance ratios.

Is a cover gasket included?
Yes. The YK GM8.25IFS-B includes a differential cover gasket so the entire rebuild can be completed with one kit.

Will installing the YK GM8.25IFS-B void my warranty under the Magnuson-Moss Warranty Act?
Under the Magnuson-Moss Warranty Act, a vehicle manufacturer cannot void your warranty solely because you installed an aftermarket part. The warranty is only affected if the manufacturer proves the aftermarket component directly caused the failure being claimed. Consult your warranty documents and a legal or mechanical professional for your specific situation.

What is the warranty on this kit?
Yukon Gear and Axle provides a limited warranty on this product. Contact Yukon Gear directly for complete warranty terms.

Is professional installation required for the YK GM8.25IFS-B?
Differential rebuilds involve critical precision measurements including pinion depth, backlash, and bearing preload. Professional installation by an experienced drivetrain technician is strongly recommended.

Installation Instructions

1. Raise and safely support the vehicle on jack stands. Drain differential fluid from the IFS diff housing.
2. Disconnect the front driveshaft from the differential flange. Remove front axle shafts as needed.
3. Remove the differential cover and clean all mating surfaces.
4. Mark bearing caps and housing for correct reassembly orientation before disassembly.
5. Remove carrier bearing caps and extract the differential carrier assembly.
6. Press old carrier bearings off the carrier and discard with races.
7. Remove the pinion nut and yoke, then carefully drive out the pinion shaft.
8. Press out old pinion bearings and remove the pinion seal from the housing.
9. Clean all bearing bores and mating surfaces in the housing thoroughly.
10. Press new Timken pinion bearing races into the housing using appropriate installation drivers.
11. Determine correct pinion shim thickness using pinion depth measurement tools and the pinion etching. Install new inner pinion bearing and selected shim.
12. Install new crush sleeve and outer pinion bearing. Install new pinion seal. Thread on pinion nut and bring to specification, checking rotating torque throughout.
13. Press new Timken carrier bearings onto the carrier. Install carrier with correct shims to achieve specified backlash per ring and pinion manufacturer's instructions.
14. Apply gear marking compound to ring gear teeth and verify gear contact pattern. Adjust shims as required.
15. Torque bearing caps to specification. Install new cover gasket and cover, fill with correct gear oil, reinstall axle shafts and driveshaft, and lower the vehicle.

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.