| This is the rear cover gasket for the R180 differential only. Always be sure to double check the style of differential that you have in your z before ordering parts. For identifying by picture, which diff you have just go to Used Differentials and look at the pics for the 2 styles. There is the R180 and the R200. The R200 is the larger of the two differentials. The picture of the gasket that we have posted may help you in identifying which diff that you have as well. If there are any doubts then look at the R200 cover gasket and compare the two pics. If that doesn't help then call us or send us an e-mail request. If we happen to be out of stock on these gaskets, it usually only takes us a week to get more. We now sell an LSD conversion kit for the R180 and the R200 differential as well. See listings. Last update 06/11 | 
