Browse Wabco Double Diaphragm Tristop 30/30 Brake Actuators / Chambers for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 6 listings. Wabco Double Diaphragm Tristop 30/30 Brake Actuator / Chamber pricing ranges from $78 to $112 based on recent marketplace data. Filter by condition, price, or year to find the right Wabco Double Diaphragm Tristop 30/30 Brake Actuator / Chamber.