030 0145 standard MB501 gas diffuser overall length 28mm
The ceramic diffuser is an essential part of the Mig gun permitting the shielding gas to flow evenly out of the nozzle and prevents the nozzle and swan neck becoming "live" when welding is taking place, it is advisable to change this item frequently as the heat this componant is subjected to will cause it to become brittle and fail in time.