Yukon Gear YK F8.8-D Master Overhaul Kit for 15-23 Ford F150/Mustang w/8.8" Rear

Vehicle Fitment

• 2015-2023 Ford F-150 (2WD/4WD; all cabs/beds; Super 8.8" rear diff)
• 2015-2023 Ford Mustang (RWD; Super 8.8" IRS)

Fitment Notes

• Designed for Ford Super 8.8" rear differential (12-bolt cover variant)
• Includes stub axle bearings/seals for Mustang independent rear suspension
• Verify differential type before purchase--Super 8.8" only

Features

• Complete rebuild kit with premium Timken bearings and races
• Includes carrier bearings, pinion bearings/races, pinion seal, shim kit
• Comes with ring gear bolts, pinion nut, crush sleeve (where applicable)
• Supplied with oil baffles, slingers, thread locker, marking compound, gasket
• One-year manufacturer warranty--to cover parts defects
• Designed and tested specifically for Super 8.8" differential rebuilds
• Ideal for performance, towing, and high-load applications
• P65 compliant labeling for California vehicles

Specifications

• Part Number: YK F8.8-D
• Application: Rear Super 8.8" Ford differential, 12-bolt cover
• Oxide-treated shims, OEM-style hardware included
• Carrier & pinion bearings: Timken brand; seal types vary by chassis
• Packaging weight: ~8 lb
• Covered under 1-year parts-only warranty

Included Components

• 1x Carrier bearing set (bearings & races)
• 1x Pinion bearing set + races, seal, crush sleeve (if required)
• 1x Complete shim kit for preload setup
• Ring gear bolts & pinion nut
• Oil baffles, slingers, gasket, thread locker, marking compound

Product Description

The Yukon Gear YK F8.8-D Master Overhaul Kit is a comprehensive rear differential rebuild package tailored for 2015-2023 Ford Super 8.8" units found in F-150 trucks and Mustang IRS setups. It includes high-quality Timken bearings, races, oil seals, shim kit, and all necessary hardware--delivering OEM-level reliability and performance in a one-stop kit.

From performance upgrades to normal maintenance, the YK F8.8-D ensures precise preload and backlash when rebuilding the differential. Complete with stub axle bearings and seals for Mustang IRS units, the kit simplifies rebuilds and enhances longevity. Backed by Yukon's 1-year warranty and compliant with P65 standards, it's ideal for diesel, towing, or high-horsepower applications requiring durable and dependable differential performance.