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Part Brand: Yukon Gear

Part Number: YK F8.8-D

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.

*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.

· · · SHIPPING · · ·

Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
Canada customers - If eBay does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.

· · · RETURNS · · ·

Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.
Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
Any returns received installed, mounted, used or missing components will be subject to return fee's.

· · · PAYMENTS · · ·

We accept all payment methods through eBay's payment system
PayPal, and all major credit cards/debit cards are accepted.

· · · FEEDBACK · · ·

Customer satisfaction is a top priority for us. If you have any issues with your order, please let us know. We will make every effort to resolve any problems and ensure you are satisfied.

· · · CONTACT US · · ·

We appreciate your business. If you have any questions, please message us through eBay and we will respond within 24 hours on weekdays. Feel free to browse our eBay store for other available items. Thank you again for choosing to shop with us!