Mercury Outboard Fuel Pump Diaphragm 55156A5 80hp 115hp 150hp 40hp 1970s 55278A1 Intermediate Housing 48-78118-17 / 48-78118A4

48-78118-17 / 48-78118A4

(both companies used the same GM blocks

Rotor: 393-4371

Reed Cage / Reed Valve / Leaf Plate Assembly is 0389823 / 389823

You can always remove this as the crankshaft was used with all years & models)

Mercury Outboard Fuel Pump Diaphragm 55156A5 80hp 115hp 150hp 40hp 1970s 55278A1 Intermediate Housing 48-78118-17 / 48-78118A4Item Description Mercury Part Number 55156A5 Fuel Pump Assembly Also part of this assembly is the diaphragm kit 55278A1 Found on various Mercury 4 cylinder & 3 cylinder outboards with dual fuel pumps that look like this, newer models (serial group #2) had a competely different style of pump. Please ask or consult your parts manual for ultimate compatibility. If you are unsure on compatibility feel free to ask! Purchase with confidence! General