'A' type overdrive main case with 1 ¾" accumulator piston and 1 3/8" operating pistons

For Race or Rally purposes, a main case with 1 ¾" accumulator piston and 1 3/8" operating pistons will be required. This is a second hand part which can be bought separately or is charged when include in an overdrive rebuild. It is the best main case to use for a competition 'A' overdrive unit.

This part is listed on the following page of the website, where further information and background reading may be found.