Yukon Ford Super 8.8" Rear Master Overhaul Kit - 2015+ F-150 & Mustang
YUKYK F8.8-D
The Ford Super 8.8" Rear Master Overhaul Kit provides the bearings, races, seal, shims, and setup components needed for a complete rebuild of 2015 and newer Ford Super 8.8" rear differentials. Built around Timken bearing components, this kit is intended for gear changes, worn differential service, and complete axle rebuilds where pinion preload, carrier preload, backlash, and gear tooth contact pattern must be reset correctly.
This kit is designed specifically for the newer-generation 12-bolt cover Ford Super 8.8 used in F-150 solid rear axle and Mustang IRS applications. Because the Mustang IRS uses additional stub axle seals and needle bearings outside the core differential rebuild, those components are sold separately and should be matched to the specific IRS configuration.
Includes:
- Carrier Bearings and Races
- Pinion Bearings and Races
- Pinion Seal
- Complete Shim Kit
- Ring Gear Bolts
- Pinion Nut
- Crush Sleeve
- Thread Locker
- Gear Marking Compound with Brush
- Differential Gasket and Sealing Components
Note:
- Mustang IRS stub axle seals and needle bearings are sold separately.
- Fits 12-bolt cover Ford Super 8.8" applications only.
Specifications
| Specification | Details |
|---|---|
| Product Type | Master Differential Overhaul Kit |
| Axle Application | Ford Super 8.8" Rear Differential |
| Primary Year Range | 2015+ |
| Position | Rear |
| Cover Bolt Count | 12 Bolt |
| Bearing Manufacturer | Timken |
| Axle Configuration | Solid Axle or IRS, Depending on Vehicle |
| Carrier Bearings and Races | Included |
| Pinion Bearings and Races | Included |
| Pinion Seal | Included |
| Shim Kit | Included |
| Ring Gear Bolts | Included |
| Crush Sleeve | Included |
| Pinion Nut | Included |
| Setup Materials | Thread Locker and Gear Marking Compound with Brush |
| Mustang IRS Stub Axle Seals | Sold Separately |
| Mustang IRS Needle Bearings | Sold Separately |
Fitment
| Make | Model | Year Range | Rear Axle Configuration |
|---|---|---|---|
| Ford | F-150 | 2015–2023 | Super 8.8 Solid Rear Axle |
| Ford | Mustang | 2015–2023 | Super 8.8 IRS Rear Differential |
Fitment Notes:
- Fits Ford Super 8.8" rear differential applications only.
- Designed for 12-bolt cover housings.
- Compatible with 2015+ F-150 solid rear axle applications.
- Compatible with 2015+ Mustang IRS rear differential applications.
- Mustang IRS stub axle seals and needle bearings are not included and must be purchased separately when required.
- Do not assume compatibility with earlier Ford 8.8 axle housings; the Super 8.8 uses a newer bearing and housing configuration.
- Verify housing style, cover bolt count, bearing configuration, and axle type before ordering.
- Professional differential setup is recommended because pinion depth, bearing preload, backlash, and gear contact pattern must be established accurately.
FAQ
What is the difference between a Ford 8.8 and a Super 8.8?
The Super 8.8 is the newer-generation Ford rear differential used in 2015+ applications and uses updated housing, bearing, and cover designs compared with many earlier Ford 8.8 axles. This kit is specifically for the newer 12-bolt cover Super 8.8 configuration.
Will this kit fit both the F-150 and Mustang?
Yes, the supplied fitment covers 2015+ F-150 Super 8.8 solid rear axle applications and 2015+ Mustang Super 8.8 IRS differentials. The Mustang IRS uses additional stub axle seals and needle bearings that are sold separately.
Do I need a master overhaul kit when changing gears in a Ford Super 8.8?
A master overhaul kit is recommended during a gear change because proper setup depends on fresh bearings, a new crush sleeve, correct shims, and accurate pinion and carrier preload.
Why are Mustang IRS stub axle seals and needle bearings sold separately?
Those components are part of the IRS-specific axle interface rather than the core differential bearing package, and their configuration can vary by Mustang application.
Can I install a Ford Super 8.8 rebuild kit myself?
An experienced builder with the correct setup tools can perform the rebuild, but differential setup requires precise adjustment of pinion depth, pinion preload, carrier preload, backlash, and gear tooth contact pattern. Professional installation is recommended if you are not experienced with ring-and-pinion setup.
