1 x Vernier Pulley

Fits:

Mk4 Astra GSi SRi Coupe Turbo Z20LET 2.0 Turbo

MK5 Astra VXR Turbo Z20LEH 2.0 Turbo

Also Fits The Zafira GSi And Zafira VXR. 

To be used in place of OE pulley allowing exact timing adjustment to suit individual engine set up.

NOTE:

We sell the pulleys as a single pulley not as a pair, a popular mod is to install a non turbo 2.0 inlet cam + adjust the timing.

We Advise Professional Install and set up also Thread Lock all Bolts and Check Regularly for Tightness.