USA Standard Gear (ZIKGM8.6-S-30V2) Spider Gear Set for GM 8.6 Differential 1 Year Warranty OEM Replacement Quality For Standard open on a 2000-2006 GM8.6 Rear End Includes Two Side Gears, Two Pinion Gears, Cross Pin Shaft, Cross Pin Bolt and Spider Gear Thrust Washers Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers. Fits 2000-2006 GM 8.6 with open differential This spider gear set fits &#039;00-&#039;06 V2 carriers Only , with carrier casting numbers 7875 or 1073. Measures 2.8&#034; across between side gear mounting surfaces.