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Lance W.
Will this work in a reverse rotation Dana 30 on a 1989 XJ. From Yukon Website it lists standard rotation as compatible but not reverse.
No. It appears that they are for standard rotation ring and pinion gears only, unfortunately. Thanks for your inquiry.
Peter C.
I’m confused by numerically higher gear… my question is will this locker work with 4:56 gears ?
Yes, this is for all gear ratios that are 3.73 and "up". Thank you for the question.
Richard D.
How do I find out what my differential gear ratio is?
You can call 800-745-6037 with your vin # and we can let you know, or you could count the teeth on both the ring and pinion and divide. Thanks for your inquiry.
Ron S.
How do I know if my Jeep has the 27 or 30 spline?
A Dana 30 from the factory would be 27 splines. If you know the axles have not been modified then you have 27 splines. Otherwise you will have to pull an axle and count.