Fuel Pump Diaphragm Kit
Replaces:
Mercury Marine: 21-42990A10, 21-857005A1, 42990A10, 42990A11, 42990A7, 42990A9, 857005A1
Applications:
Mercury / Mariner 2-Stroke Outboard Engines:
Does not fit Mariner engines of Japanese origin.
If you are unsure about the application of this part, please contact us with the engine details and serial number.