A Wilwood caliper piston sized 1.62 in x 1.05 in with Thermlock sealing is a direct replacement component for Wilwood calipers during a rebuild. It restores proper piston function and helps maintain seal integrity under thermal cycling. Use it when rebuilding or servicing Wilwood calipers to retain original fit and sealing behavior without altering caliper geometry.
Wilwood Piston Thermlock - 1.62in x 1.05in