Fuel pump for Volvo Penta MD1 MD2 MD3 MD6 MD7 MD11-17 2001 2002 2003 833323

Poseidon Marine mechanical fuel pump assembly.
The lift pump draws fuel from the fuel tank, through various filters, then delivers the fuel to the injection pump. These pumps are either mechanically driven off an eccentric on the camshaft, or driven electrically. The diaphragm is pulled down by the action of the lever arm and then moves upwards by the action of the return spring.
When the diaphragm moves down, it sucks the outlet valve closed, and the inlet valve open. Because the surface of the fuel in the tank is open to atmospheric pressure, fuel is induced into the body of the pump. As the diaphragm returns upwards, it pushes the inlet valve closed, and opens the outlet valve, thus delivering fuel under pressure. Inspect your fuel pump regularly for leaking and replace according to manufacturer's maintenance schedule.
This fuel pump will fit only : 
2001* 2002* 2003* D1 D2 D3 D5 D6 D7 D11 D17
2001 2001B 2001AG 2001BG
2002 2002B 2002D 2002AG 2002BG
2003 2003B 2003D 2003AG 2003BG
2003T 2003TB 2003-SOLAS 2003B-SOLAS 2003TB-SOLAS
MD1B
AQD2B D2A
MD2 MD2A MD2B MD3B
MD5A MD5B MD5C
MD6A MD6B
MD7A MD7B
MD11C MD11D
MD17C MD17D
*Note : 2000 series must be equipped with 859428 pump from SN2300046826 & up.
Inlet 8mm Outlet 6mm
Reference to OEM part number : 833323. Mounting o-ring included. Earlier version with screw on cap.
1 Year or 100hours warranty, whichever is met first.
Use of contaminated fuel or old / wrong filter voids warranty.