Pressure pump uses shop air to generate pressure in large truck cooling systems EFFORTLESSLY! Set includes 3 adapters to pressure test pressure relieving caps found on large trucks. The MSM-1C052 cap adapter tests caps from "A" size (2 3/16" OD) filler necks. MSM-14504 cap adapter test caps from "B" size (2 11/16" OD) filler necks. MSM-1C035P cap adapter tests caps with a 52mm x 2.5mm thread.
MSM-300K pump also works on cars. The pressure regular allows fine control from testing a small area (like a cap) to testing a large area (like an empty truck cooling system) and everything in between.
