This is the collapsable spacer needed to establish and maintain pinion bearing pre-load for the 8.5 and 8.625 GM rear. Whether you call it a collapsable spacer, "Crush Sleeve", "Squash Washer", "Crush Bearing", "Crush Washer", or any other name that you use or may have heard, this is IT! Questions? Call our help line Monday thru Friday 8:00 to 5:00 EDT TOLL FREE 1-877-614-GEAR. |