Fortpro Ambient Air Sensor Compatible with Cummins ISX Engine (Models CM570, QSX15) and ISM Engine (Models CM570, QSM11) Replaces 2897331, 3331044, 4076493 | F238886Specifications Product Line: Electrical Category Name: Sensors Part Type: Ambient Pressure Sensor Alternate Part Name: Air Ambient Pressure Sensor, Barometric Pressure Sensor OEM Part Number: 2897331 Application Type: Semi Trucks, Heavy Duty Trucks Pin Count: 3 Wiring Included: NO Connector Material: Plastic Connector Shape: Rectangular Overall Length: 2. 44 in. Sensor Type: Pressure Net Weight: 0. 03 lb. Intended Application Compatible with Cummins