Brass T-Fitting vacuum plug. This is the 3/8" plug Tri-power Engine Performance Simple install

Simple install

Fits all 1963 and newer Pontiac V-8 engines used in GTO/ Lemans

Don't need needle and seats or accel pumps

Also an an option add the Blackened Screw set and washers at a savings

Cars equipped with factory air had a return line

Brass T-Fitting vacuum plug. This is the 3/8" plug Tri-power Engine Performance Simple installThis is the plug that is used on the brass T Fitting for the later mid year 1964 and 1965. This is for the larger port in the T Fitting that is for the 3 16" line. This is the 3 8" plug. There is both a smaller and larger port on the T fitting for 1964, one is a 1 8" line and the other is a 3 16" line. Measure what you have before you order. If uncertain ask.