This is the plug found behind the oil filter tree on all Twin Turbo Z32s. These must be put into place if using the Twin Turbo oil filter tree as it has the check valve in the tree. 

Sold individually. 

Fits:

• 1990-1996 nissan 300ZX (Z32) 

The Non Turbo Z32s use a Check Valve in this location which can be found HERE.