Aftermarket heat exchanger for Cummins 4 Cylinder 4BT marine engines.
Replaces Cummins 3910582 .
4" Diameter x 16.25" long shell, copper nickel core Replacement for Cummins part #3910582. Raw Water Inlet/Outlet: 1.25". 3910582 equivalent to Sen-Dure 9445-1-7.
Copper Nickel bundle for superior resistance to corrosion.
