New Diff gasket for the alternate "10 bolt" ... just check your diffs cover design... count the bolts holding the inspection cover to the diff housing.... be accurate..as 9 or 10 are different.
This is the 10 bolt.. a squarer cover... to see which your car is fitted with.
Note there is also a 9 bolt diff.. so if unsure ...just count the bolts on the inspection plate - doing this will also tell us what wheel bearings your needing .. if your needing them etc..