Two threaded adaptors to suit our electric water pump adaptors for rotary engines, with a Schrader valve and pressure gauge for pressure testing the cooling system of a Mazda 12A / 13B / 20B rotary engine.
The ports in the centre of the adaptors are 1/8" NPT. Available with a 15PSI or 60PSI gauge, and a high quality USA-made Schrader valve is included with both adaptors.
