Holden Trimatic / TH180 vacuum modulator with adjustable screw
known for leaking internally or allowing oil up into the manifold.
Will suit all Holdens / USA TPD Brand
Do not use the factory gasket as they create leaks! (25 years experience in building transmissions)
Use 3j permatex (form a gasket of the brown gooey stuff)
just on the thread.
suit 4 cyl, 6 cyl, and v8
buy with confidence
more parts in-store!