vagcat.com shows the cam pulley is the same for MC and 3B engines from about 1989 - 1991 = p/n 034109111A I've found the parts catalog at vagcat to be a great resource. Registration is required, but simple as can be. I tried but never could figure out how to get ETKA working on my PC with 64-bit Win7, so it's always vagcat.com for me these days. Dave C.