I pulled off the transmission and I'm changing the rear manin seal. I took the old one off and I noticed that there was a hard rubber seal in the old one that I didnt get with the new one. Do I reuse it or was I supposed to get a new one with the new rear main seal?

 

Get a new one, no need to reuse old gaskets on this part of the engine. Since you're doing it, might as well do it right.

 

is it a part that I can buy separate? or was it supossed to come with the rear main seal?

 

Comes seperate

 

oh ok I didnt know that.

 

The top gasket is the oil pan gasket. You can research it on Courtesynissanparts.com beta parts catalog. You will need some liquid gasket to install the oil pan gasket.

http://www.courtesyparts.com/betasit...1957_1958_1961