A New Meyer A Cartridge Valve # 15661. This is a set of the 15659 Coil and 15660 Valve. This is the newest version it is a direct replacement for for the older 15356 and 15392.
Most of these have a round coil some use a Square one, another number that bas the square coil is 15972.
This is an original factory valve from Meyer. It is applicable to the E-46, E-47, E57, V66 and E-60 plow pumps. This comes with the solenoid that has a black wire.
If you'd like a breakdown showing the placement of the pump parts, check this link.
