This square 4 pin O2 extension will extend your GTO's front O2 wiree by 12 inches. Please remember to select a quantity. $5.95 shipping cost is for up to 4 of this PT#!

If buying for a header install, please confirm the manufacturer does not already include all needed O2 extensions before purchasing these. Any returns will be issued as store credit mius shipping.

Will fit front O2's sensors only.