Every UCF differential cover is 1/4" steel, folded from one piece and welded to a 1/4" steel sealing ring. Find your axle below, then pick a welded cover (ready to bolt on) or a DIY kit (you finish the welds).
Jeep Wrangler: which axles do I have?
| Jeep | Front | Rear |
|---|---|---|
| CJ-5, CJ-7, CJ-8 ('72–'86) | Dana 30 | Dana 44 on some. Most '76+ CJs have an AMC 20. |
| YJ ('87–'95) | Dana 30 | Dana 35 |
| TJ ('97–'06), non-Rubicon | Dana 30 | Dana 35 on most, Dana 44 on some |
| LJ ('04–'06), non-Rubicon | Dana 30 | Dana 44 on most |
| TJ & LJ Rubicon ('03–'06) | Dana 44 | Dana 44 |
| JK & JKU ('07–'18), non-Rubicon | Dana 30 | Dana 44 |
| JK & JKU Rubicon ('07–'18) | Dana 44 | Dana 44 |
| JL & JLU ('18+) | Dana M186 on most non-Rubicons, Dana M210 on Rubicon, 392, Rubicon X and diesels | Dana M200 on most non-Rubicons, Dana M220 on Rubicon and 392 |
| Gladiator JT ('20+) | Dana M210 | Dana M220 |
On a JL, the build sheet lists your exact axles, since some Sport, Sahara and Willys models came with the heavier M220 rear.
Other Jeeps
Cherokee XJ, Comanche MJ and Grand Cherokee ZJ and WJ use a Dana 30 front. In the rear, the XJ, MJ and ZJ use a Dana 35 or, on '91–'01 XJs, a Chrysler 8.25. The Liberty and the '05–'10 Grand Cherokee WK and Commander XK use the Chrysler 8.25, and WKs and XKs with Quadra-Drive II need the Quadra-Drive II version.
Trucks and other axles
| Make | Axles we make covers for |
|---|---|
| Chevy & GMC | Corporate 10 Bolt front ('77–'91 K5, K10/K20, Suburban), 10 Bolt rear (through 2006), 12 Bolt truck rear, 14 Bolt semi-floater, 14 Bolt full floater, shaved 14 Bolt, Dana 60 front ('77–'91 K30) |
| Ford | Dana 44 front ('66–'79, not TTB), 8.8 rear (10 bolt), Dana 60 front ('88–'97 F-350), Super Duty Dana 60 front, Sterling 10.25/10.5 rear, Dana 80 rear, Dana M220 rear ('21+ Bronco, '19–'24 Ranger) |
| Dodge & Ram | Dana 44 front ('94–'01 1500), Dana 60 front ('94–'02 2500/3500), Chrysler 8.25 rear (10 bolt), Dana 80 rear ('94–'02 3500) |
| Aftermarket | Dynatrac Pro Rock 44, Pro Rock 60, Pro Rock 80, Dynatrac XD 60, Ultimate Dana 60 front |
How do I tell which axle I have?
Count the bolts on your cover first. The Ford 8.8, GM 10 Bolt and Chrysler 8.25 have 10. The GM 12 Bolt and Chrysler 9.25 have 12. On a 14 Bolt, a hub that sticks out past the wheel means a full floater; no hub means a semi-floater. A few look-alikes don't fit: the 2015+ F-150 12 bolt "Super 8.8", the 2007+ GM 8.6 (it fills through the cover), and the 2014+ GM 9.5 and 9.76. Still not sure? Send us a photo of your axle and we'll tell you.
Welded or DIY?
Both use the same parts. A welded cover ships fully welded with the fill plug and mounting hardware, ready to paint and bolt on. A DIY kit costs less and ships tack-welded, so you know the parts fit. You finish it by welding the body to the ring all the way around for a liquid-tight seal.
Does it come with a fill plug?
Yes, on axles that fill through the cover. The Ford 8.8, GM 10 Bolt rear, GM 12 Bolt, 14 Bolt full floater and Sterling fill through the housing, so those covers have no fill plug.
Paint and install
Every cover ships as bare steel. Spray paint the outer surface before you install it. Step-by-step instructions are in our Differential Cover Install Guide (PDF).