Yukon Gear Master Overhaul Kit For 2010 & Down GM and Dodge 11.5in Diff

Complete Differential Rebuild Kit for 2010 and Earlier GM and Dodge 11.5in AAM Rear Axle

The YK GM11.5 from Yukon Gear is the all-inclusive overhaul solution for the early AAM 11.5-inch rear differential used in 2001-2010 GM heavy-duty trucks and 2003-2010 Dodge Ram 2500 and 3500 pickups. The kit is built around the 4.125-inch O.D. inner pinion bearing design used from the axle's introduction through 2010, so YK GM11.5 delivers a precise match for those early 30-spline units. Inside you will find Timken carrier bearings, Timken pinion bearings, a complete shim assortment, pinion nut, pinion seal, thread locker, gear marking compound, and RTV silicone. Every component required to properly set pinion depth, bearing preload, and backlash is in the box, making YK GM11.5 the correct single-purchase rebuild solution for pre-2011 AAM 11.5-inch axles.

Features and Benefits

• Designed for the 4.125-inch O.D. inner pinion bearing race used on 2010-and-earlier AAM 11.5-inch axles
• Timken carrier bearings and races for proven heavy-duty truck performance
• Timken inner and outer pinion bearings with precision-matched races
• Complete shim assortment for both carrier and pinion depth settings
• High-quality pinion seal to stop gear oil leaks at the yoke
• Pinion nut included for correct clamping load on reassembly
• Thread locking compound for secure ring gear bolt installation
• Gear marking compound and brush for contact-pattern verification
• RTV silicone for differential cover sealing
• 1-year manufacturer warranty against defects

Vehicle Fitment

Specifications

What Is Included

• Timken carrier bearings and races (pair)
• Timken inner pinion bearing and race (4.125-in. O.D.)
• Timken outer pinion bearing and race
• High-quality pinion seal
• Complete shim kit (carrier and pinion depth)
• Pinion nut
• Thread locking compound
• Gear marking compound with brush
• RTV silicone for differential cover
• 20-page installation instruction sheet

Frequently Asked Questions

Does the YK GM11.5 include a crush sleeve?
The early AAM 11.5-inch differential uses a solid pinion spacer rather than a crush sleeve. The YK GM11.5 kit is configured for that solid-spacer design; check your specific build year and note that the preload is set via shims rather than a collapsible sleeve.

What differential does YK GM11.5 fit?
The YK GM11.5 fits the AAM 11.5-inch rear differential on 2001-2010 GM Silverado and Sierra heavy-duty trucks and 2003-2010 Dodge Ram 2500 and 3500 pickups equipped with the 30-spline, 4.125-inch O.D. pinion bearing design.

How is YK GM11.5 different from YK GM11.5-B?
The YK GM11.5 is the 4.125-inch O.D. inner pinion bearing kit for 2010-and-earlier axles. The YK GM11.5-B is the 4.375-inch O.D. kit for mid-2011-and-newer axles. Using the wrong kit will result in incorrect bearing fit.

Does YK GM11.5 include ring gear bolts?
The YK GM11.5 includes thread locking compound. Ring gear bolts are included as part of the complete kit contents.

Are Timken bearings used in YK GM11.5?
Yes. All carrier and pinion bearings in the YK GM11.5 are Timken-brand for OEM-equivalent durability under heavy towing and hauling loads.

What is the warranty on YK GM11.5?
Yukon Gear covers the YK GM11.5 with a 1-year limited warranty against manufacturer defects. Under the Magnuson-Moss Warranty Act, this written warranty gives you specific legal rights, and you may have additional rights that vary by state.

Does YK GM11.5 fit a 2003 Dodge Ram 2500 Van with 11.5-inch axle?
Yes. The YK GM11.5 fitment includes the 2003 Dodge Ram 2500 Van equipped with the AAM 11.5-inch differential.

Does YK GM11.5 include installation instructions?
Yes. A 20-page differential installation instruction sheet is included with YK GM11.5 to guide technicians through every step of the rebuild.

Installation Overview

1. Drain gear oil and remove the differential cover; clean all mating surfaces thoroughly.
2. Remove the carrier assembly; inspect the housing bore and bearing pockets for wear.
3. Press out the existing pinion and remove all old bearings and races.
4. Drive new Timken inner and outer pinion bearing races into the housing.
5. Set pinion depth using shims from the YK GM11.5 kit and a dial indicator.
6. Install the pinion spacer and new inner pinion bearing; insert pinion into housing.
7. Install the outer pinion bearing and new pinion seal from the kit.
8. Install yoke and tighten the new pinion nut to achieve the specified bearing preload.
9. Press new Timken carrier bearings onto the carrier; lower carrier into housing.
10. Adjust carrier shims to set factory-specified ring gear backlash.
11. Coat ring gear teeth with marking compound; verify contact pattern and adjust as needed.
12. Torque ring gear bolts with included thread locker to specification.
13. Install differential cover using included silicone; refill with appropriate gear oil.

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.