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Yukon Gear ZK F8.8-D Master Overhaul Kit for 2015+ Ford Mustang / F-150 8.8in Rear Differential
The Yukon Gear ZK F8.8-D is a master overhaul kit for the Ford 8.8 in. rear differential found in 2015 and newer Ford Mustang and F-150. This comprehensive kit provides all bearings, races, seals, and small parts needed for a complete differential rebuild. Bearings are Koyo or Timken quality. Yukon's Lifetime Warranty is included, and Magnuson-Moss protections apply for drivetrain warranty claims.
Key Features
- Complete master overhaul kit — all bearings, races, seals, and hardware in one part number
- Koyo/Timken bearings — OEM-equivalent or better quality for reliability and longevity
- Fits 2015+ Ford Mustang and F-150 8.8 in. rear differential
- Eliminates parts sourcing hassle — everything needed is included
- Yukon Lifetime Warranty — Magnuson-Moss protections apply for drivetrain warranty claims
What's Included
- Carrier bearings and races
- Pinion bearings and races
- Pinion seal
- Axle seals
- Small parts, shims, and hardware as required for a complete rebuild
Specifications
| Specification | Detail |
|---|---|
| MPN | ZK F8.8-D |
| UPC | Not available |
| Differential | Ford 8.8 in. rear |
| Bearing Brand | Koyo / Timken |
| Warranty | Yukon Lifetime Warranty (Magnuson-Moss applies) |
| Fitment | 2015+ Ford Mustang, 2015-2020 Ford F-150 (8.8 in. rear) |
This Part Fits
| Year | Make | Model | Notes |
|---|---|---|---|
| 2015+ | Ford | Mustang | 8.8 in. rear differential |
| 2015-2020 | Ford | F-150 | 8.8 in. rear differential |
Frequently Asked Questions
-
Q: What is included in the ZK F8.8-D kit?
A: Carrier bearings and races, pinion bearings and races, pinion seal, axle seals, and all small parts required for a complete rebuild. -
Q: What bearing brand is used?
A: Koyo or Timken, both OEM-equivalent quality brands. -
Q: Does this fit all 2015+ Mustangs?
A: The ZK F8.8-D fits 2015+ Ford Mustang models equipped with the 8.8 in. rear differential. Confirm your Mustang has the 8.8 in. rear before ordering. -
Q: Does this fit the Mustang GT500?
A: Confirm with Yukon Gear. Some high-performance Mustang variants use different differential specifications. -
Q: Does this kit include ring and pinion gears?
A: No. This is a bearing and overhaul kit only. Ring and pinion gears are sold separately. -
Q: Is there a warranty?
A: Yes. Yukon Gear provides a Lifetime Warranty. Magnuson-Moss protections apply for qualifying drivetrain applications. -
Q: What differential fluid should I use after the rebuild?
A: Use the fluid type and quantity specified in the Ford service manual for the 8.8 in. rear differential. Ford typically specifies 75W-140 synthetic gear oil for the 8.8 in. unit. -
Q: Can I use this kit with a TracLok or Torsen limited-slip differential?
A: Yes. This overhaul kit covers the main differential bearings and seals. The limited-slip clutches are a separate item not included in this kit.
Installation Instructions
Clean and inspect the differential case thoroughly before beginning. Use the appropriate bearing press for carrier and pinion bearing installation. Set pinion depth and carrier preload per Yukon and OEM specifications using the included shims. Set ring and pinion backlash to specification. Torque all fasteners to OEM spec. Fill with the correct differential fluid. Test for noise and leaks before returning to service.
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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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