This is a Genuine GM rear end gear set. Fits 1988-1990 Chevy GMC 1/2 tons C & K with 8.50" diameter ring gear. Large gears 16 tooth, small gears 10 tooth, 30 spline count, this kit is missing the shaft that holds the gears to the pinion carrier. Group # 5.527, part # 26012906.
Please Note: NOS and USED parts are made by the OEM. These parts can range from 10 to 75 years old and were made to the standards of the year the part was manufactured. Most NOS parts are in good to excellent condition unless otherwise stated, but please do not expect them to be perfect