Brand new primary gear shim / thrust washer 0.120". 1275cc as fitted behind primary gear to obtain correct clearance of 0.03-0.05". These are very often worn and cause oil leaks and premature wear of primary gear. For use on all 1275cc transverse engines and all S engines. Not for use on 850,998 or 1098cc engines. This is a genuine Rover part that retails at other specialists for 30 pounds. Always replace the seal when fitting the primary gear with a genuine one. The best one being luf10005. All the copy ones leak! We also have listed a thinner version which is Dam6488.