Air Brake Compressor Wabco 9111545150 for Cummins 6BT 6CT 6CT8.3 QSB Ottawa C50 Engine Article number: 9111545150, 9111545020, 911 154 515 0 Applications: Cummins Engine: 6BT, 6CT, 6CT8.3, QSB Ottawa engine: C50 Specification: Crankshaft thread: M20 x 1.5 Max. working pressure: 145.0 psi Operating speed: 3000 (1/min) Piston diameter: 2.95 inches Piston stroke: 2.20 inches Port thread 0:0.98 inch Port thread 2:M27 x 2 Port thread 4: M10 x 1.0 Port thread 8.1:M10 x 1 Port thread 9:3/4" - 16 UNF Port thread 9.1:3/4" - 16 UNF Port thread 9.2:3/4" - 16 UNF Sweep volume ( ^cm3 ):247 cm3 Temperature range: -40 to +185°F Type: Single cylinder Estimated volume (dm3):10.13 Size (mm x mm x mm):250 x 332 x 122