E4OD Pump Assembly

The E4OD and the 4R100 has gone through several pump changes during its production.

From 1989 to 1994 the casting number on the pump are E9 or F1.

From 1989 to 2001 there was one with the casting number F5 or F8 with the sealing ring below the stator bushing (this is the one pictured below).

There is also another one from 1989 to 2001 with the casting letters C and CA, the heavy duty version.

The 4R100, from 1998 and up, comes with the seal ring above the stator bushing with or without PWM.