Yukon Gear Master Overhaul Kit for 2014+ RAM 3500 11.5in & 11.8in Rear Axle (2in Head Bearing)

Master Overhaul Kit for 2014 and Up RAM 3500 AAM 11.5in and 11.8in Rear Axle with 2-Inch Head Bearing

The YK AAM11.5-D from Yukon Gear is purpose-built for the updated AAM rear axle introduced on 2014-and-up Ram 3500 trucks, featuring the larger 2.000-inch head bearing specification that distinguishes this generation from earlier AAM 11.5-inch axles. The kit covers both the 11.5-inch housing used through 2015 and the new 11.8-inch (300mm) axle option that appeared on 2016-and-up Ram 3500 models with 16 ring gear bolts. Inside the box you will find Timken bearings and races, high-quality seals, a complete shim assortment, and all related hardware needed to properly rebuild either axle. YK AAM11.5-D ships with a 20-page instruction sheet and is backed by Yukon's 1-year manufacturer warranty.

Features and Benefits

• Engineered for the 2.000-inch head bearing specification on 2014-and-up AAM Ram 3500 axles
• Covers both the 11.5-inch and 2016+ 11.8-inch AAM rear axle applications
• Timken carrier bearings and races for proven heavy-duty towing durability
• Timken inner and outer pinion bearings with precision-matched races
• Complete shim set for carrier and pinion depth adjustments
• High-quality pinion seal to prevent gear oil leaks
• All hardware included: ring gear bolts, pinion nut, crush sleeve, thread locker
• Gear marking compound and brush for contact-pattern verification
• 1-year manufacturer warranty against defects
• Note: For 2016+ 11.8-inch axle, ring gear bolt thread pitch changed; new bolts sold separately if replacing

Vehicle Fitment

Specifications

What Is Included

• Timken carrier bearings and races (pair)
• Timken inner pinion bearing and race (2.000-in. head bearing)
• Timken outer pinion bearing and race
• High-quality pinion seal
• Complete shim kit (carrier and pinion depth)
• Ring gear bolts
• Pinion nut
• Crush sleeve
• Thread locking compound
• Gear marking compound with brush
• 20-page installation instruction sheet

Frequently Asked Questions

Does the YK AAM11.5-D include a crush sleeve?
Yes. The YK AAM11.5-D includes a crush sleeve sized for the 2014-and-up AAM Ram 3500 rear axle.

What differential does YK AAM11.5-D fit?
The YK AAM11.5-D fits the AAM 11.5-inch and 11.8-inch rear axle on 2014-2018 Ram 3500 pickup trucks with the 2.000-inch head bearing. It is not the correct kit for earlier Ram or GM 11.5-inch applications.

Will YK AAM11.5-D work on a 2016 Ram 3500 with the 11.8-inch axle?
Yes. The YK AAM11.5-D covers the 2016-and-up 11.8-inch (300mm) axle option. Note that the 11.8-inch uses a different ring gear bolt thread pitch; replacement ring gear bolts for that application are sold separately.

How does YK AAM11.5-D differ from YK GM11.5-B?
The YK AAM11.5-D is designed specifically for 2014-and-up Ram 3500 axles with the 2.000-inch head bearing and updated hardware. The YK GM11.5-B covers 2011-and-up GM and Dodge 11.5-inch axles with the earlier bearing specification.

Does YK AAM11.5-D include ring gear bolts?
Yes, ring gear bolts and thread locking compound are included with YK AAM11.5-D. If replacing ring gear bolts on the 2016+ 11.8-inch axle, the new-thread-pitch bolts must be purchased separately.

Are Timken bearings in YK AAM11.5-D?
Yes. Both carrier bearings and all pinion bearings in YK AAM11.5-D are Timken-brand for premium strength and service life.

What is the warranty on YK AAM11.5-D?
Yukon Gear backs the YK AAM11.5-D 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 AAM11.5-D include installation instructions?
Yes. A 20-page differential installation instruction sheet is included with YK AAM11.5-D.

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 or scoring.
3. Press out the existing pinion and remove all old bearings and races from the housing.
4. Drive new Timken inner and outer pinion bearing races into the housing bores.
5. Set pinion depth using shims from the YK AAM11.5-D kit and a dial indicator.
6. Install the crush sleeve and new inner pinion bearing; insert pinion into housing.
7. Install the outer pinion bearing, yoke, and new pinion seal from the kit.
8. Gradually tighten the new pinion nut to achieve the specified pinion bearing preload.
9. Press new Timken carrier bearings onto the carrier; lower carrier into housing.
10. Adjust carrier shims to achieve the factory-specified ring gear backlash.
11. Apply marking compound to verify gear contact pattern; adjust as needed.
12. Torque ring gear bolts with thread locker to specification.
13. Install differential cover and refill with the 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.