This an OEM breather for a 3000GT Getrag transmission or t-case. It fits 6 speed transmissions and all t-cases. It may fit some late model 25 spline 5 speeds, but if yours has the solid plastic breather this won't work for you.
It is good to replace these when services your transmission or t-case as they tend to get torn or dry rotted. Add a dab of RTV to the underside of it to prevent leaks.
This will fit ALL year's transfer cases 91-99.
