This Yukon replacement crush sleeve fits a wide set of rear axle types including Jeep JK rear, GM 7.6" IRS, 8.5" and 8.6", 8.75" and 8.875", and Nissan M226 rear, with an approximate length of 0.620 inches. It’s intended as a direct replacement for those applications to restore correct pinion geometry and bearing preload during differential service.
Yukon Gear Rplcmnt Crush Sleeve For Dana 44 JK Rear / GM 7.6in IRS / 8.5in / 8.6in