A 12V, 3-way normally closed air solenoid valve with integral 1/4" PLC fittings, used to electrically control air flow in truck pneumatic systems such as fan clutch engagement. It's designed for Volvo, Mack, Paccar, and Freightliner applications, cross-referenced to OEM numbers including 20807261, 5030-111, and G90-6051.
