The Cummins manifold long 3964070 short 3937477 for 8.3 8.9 8.3C QSC ISC ISL QSL is a flow-control valve from Cummins. It acts as the on/off or metering point in a piping or tubing run, controlling how fluid or air passes through the circuit. It is commonly in OEM machinery and MRO replacement for fluid power circuits.
