The Cometic AFM differential cover gasket for GM 8.125 in, 12-bolt applications is a .060" AFM gasket bonded to an aluminum core designed to provide reliable differential sealing. AFM material delivers around 85% recovery with solid torque retention, resists temperatures above 205°F, does not require sealants or re-torquing, and is asbestos free for consistent driveline performance.
Cometic GM 8.125in .060in AFM Differential Cover Gasket - 12 Bolt