Seawater pump cover plate replaces Johnson 01-42398 / JABSCO 3992 / 11830-0000.
Replaces Yanmar cover plate for pumps 128377-42500, 128397-42500, 128990-42500 / 128990-42510.
Reversible - no stamps / etching so both sides can be used.
This is a non-OEM, aftermarket part JMP COV 0042.