Duratec Cam Friction Washer
 
In standard form, you will notice the Duratec range of engines does not use any type of keyway to locate chain sprockets. To prevent camshaft sprocket slip, a high friction washer has been developed that installs between the camshaft sprocket and camshaft. Use these in high performance applications when camshafts are upgraded. Priced each.
 
DCAMFRICTIONWASHER