3 Pack Air Brake Chamber 30/30 Sealed 2.5" Stroke (Round Cast Air Port Bosses) - Replaces For Haldex 3030Sb, Volvo Truck 85103137, Bendix BWNT3030Std78, Navistar PLCTS3030, Freightliner

Sealed tandem 30/30 air brake chamber with a 2.5" standard stroke; includes clevis and mounting hardware for straightforward, full replacement. Replaces OEM and aftermarket part numbers such as Bendix BW-NT3030STD78, MGM MA15431, Automann 179.SB3030S, Haldex 3030SB, Volvo 85103137, Freightliner ABPN42A43030C3D, Newstar S16987, and others. Features robust round cast air port bosses with 3/8" NPT threads, corrosion-resistant black E-Coated steel housings, and a standard 13.5" push rod with 5/8"-18 thread. Built from durable 8620 steel, with a 10.312" chamber height and 4.75" center-to-center mounting bolt spacing for dependable performance in demanding applications. Wide-style clamp bands simplify diaphragm replacement. The environmentally friendly design provides protection against carcinogens compared to zinc-plated alternatives