Yukon (YK GM8.6-A) Master Overhaul Kit for GM 8.6" Differential

Extremely high quality made in the usa parts. I've bough soooo many Yukon gear parts over the years and had very minimal part failure ( and only failures where in very high horsepower race application rigs that where taking far more abuse than your normal daily driver or weekend warrior rig would under go) there fully worth the money.

Awesome product. Great quality

Overall the bearing kit was very good! Had my mechanic install the kit, but in the process he noted that two of the bearings did not fit my 2004 suburban z71. He sourced those two locally and completed the job. Would buy this kit again if need be.

Four stars for being a great product, with -1 star for being difficult to know exactly which kit to buy. If you have any aftermarket positraction carrier, you need larger carrier bearings. You need either LM102949 bearings and LM102911 races (pre-1999 GM), or LM603049 bearings and LM603012 races (2000+ GM). It would be nice if there were a reference somewhere. YKGM8.5HD contains Timken LM102949 bearings and LM102911 races, and Koyo pinion bearings and races. Buy this if your vehicle is 99 or older. YKGM8.6-A contains Timken LM603049 bearings and LM603012 races, with Timken pinion bearings and races. Buy this if your GM vehicle is 2000 through 2008. For newer GM than that, get the YKGM8.6-B.

Ordered this along with Yukon gear posi since my G80 shat the bed. DO NOT order the 'bundle' as it jacks the price up over the price of purchasing individually. Everything we needed to completely rebuild the rear end was included with the exception of axle seals, bearings and oil. Rear is now dead quiet.