Proflow Solenoid, Genuine MAC Valve Boost Controller Replacement, 3-Port, with Fittings, Each - PFEBC300Part Number: PFEBC300 These genuine Mac Electronics boost control solenoid kits will not degrade rich fuel mixtures like most common boost control solenoids. This will significantly extend life and eliminate the chance of sticking from contamination. They are pressure tested to an amazing 100 psi and include 2x 6mm barb style hose ends with 1 8" BSP threads and a breather.