Yukon Gear Carrier installation Kit For Ford 8.8in Diff
Putting a locker or a new limited slip into the 8.8 under an F-150, Mustang, Explorer, Ranger or Crown Victoria? Or chasing a steady growl from the rear that does not change between throttle and coast? Either job ends with the carrier coming out of the housing, and the carrier bearings almost never get to go back in. Yukon CK F8.8 is the carrier-side kit for the Ford 8.8 in. rear: Yukon lists the contents as carrier bearings, races and shims, and nothing for the pinion. That keeps the cost down when the pinion side is healthy and only the differential case is changing.
The 8.8 is an integral-carrier, C-clip axle. The differential case and ring gear spin on two tapered roller bearings that sit in the housing under bolted caps, and shims on the outside of each bearing race decide two things at the same time: how much side preload the bearings carry and where the ring gear lands against the pinion, which is your backlash. When you swap from an open or worn Traction-Lok case to an aftermarket unit, the new case has its own journal and flange dimensions, so the old bearings have to come off, new cones get pressed onto the new case, and the shim stack is rebuilt to suit it. Having new races and a spread of shim sizes on the bench is what makes that rebuild go quickly instead of turning into a parts run halfway through.
Use our carrier bearing noise guide to separate a carrier bearing from a pinion bearing or a wheel bearing. Then pull the cover, read the old contact pattern and rock the pinion yoke. If the pinion has play or the gears are chipped, a carrier-only kit is the wrong purchase; the USA Standard ZK F8.8 master overhaul kit covers both sides. For a chatter-only complaint, try the fixes in our Traction-Lok chatter guide first.
This kit is listed for the Ford 8.8 in. 10-bolt differential. It is not for the 2015-and-later Super 8.8 used under newer F-150 and Mustang models, which runs larger bearings and has its own Yukon kit, and it is not the 7.5 in. axle even though the two share a lot of hardware. The 8.8 also went into independent rear and reverse-rotation front versions, so if your axle is not a conventional solid rear, check the bearing numbers on your old cones or send us your year and VIN before ordering. The cover tag on the 8.8 tells you ratio and whether it is a limited slip. We do not have a dedicated Ford 8.8 collection page yet; the rest of our axle kits are in the rebuild kits section.
Popular carriers people install with this kit include the Yukon Grizzly locker and the Dura Grip 31-spline limited slip. Match spline count to your axles; our 28 vs 31 spline guide explains how to tell. Refill with 75W-140 or 75W-85 gear oil as your owner manual specifies, and add friction modifier when the carrier is a clutch-type limited slip.
| Brand | Yukon Gear & Axle |
| Part number | CK F8.8 |
| Fits | Yukon Gear Carrier installation Kit For Ford 8.8in Diff |
| Type | Differential Install Kits |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yukon describes it as carrier bearings, races and shims for the Ford 8.8. It does not include pinion bearings, a pinion seal, crush sleeve or ring gear bolts.
Usually yes. Pulling a pressed-on bearing cone off the old case tends to damage it, and the new carrier needs its own cones and a new shim stack to set backlash and preload.
No. The Super 8.8 uses larger bearings and different setup specs. Send us your year and VIN and we will point you to the right kit.
You can use them as a starting point, but a new carrier rarely sits exactly where the old one did, so expect to change shim sizes to bring backlash into the .006-.010 in. range.
Use 75W-140 or 75W-85 gear oil per the vehicle's spec, and add limited slip friction modifier if the new carrier uses clutches.
