Power Brake Booster - 7 in OD - Single Diaphragm - Steel - Cadmium - Chevy 1955-64 - Each Brand-ALLSTAR PERFORMANCE MPN ALL41007 . **NOTE: MASTER CYLINDER MOUNTING STUDS ARE 3-3/8 ON CENTER. THIS IS A SINGLE DIAPHRAGM BOOSTER. BOOSTER OFFERS UP TO 1-1/2 (ACTUATOR) PEDAL TRAVEL. Truck Freight NO
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