Air Master (Pneumatic Braking Device) 47250-Z2066

Air Master / Pneumatic Piston (P/N: 47250Z2066), manufactured by PING CHUN as an aftermarket replacement part. This device is used as a component of the supplementary pneumatic braking or clutch system in heavy-duty trucks (especially vehicles cross-referenced with this Asian OEM number format). It converts air pressure into hydraulic pressure to actuate the brakes or clutch. The label warns that it should be maintained every 12 months with a repair kit.