Auto Engine Car Accessories 13517573436 High Pressure Fuel Pump for BMWS MINIS COOPERS R55 R56 R57 R58 N14

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For Mini R55 Clubman - All Cooper S & JCW models with N18 engine
For Mini R56 Hatch - All Cooper S & JCW models with N18 engine
For Mini R57 Convertible - All Cooper S & JCW models with N18 engine
For Mini R58 Coupe - All Cooper S & JCW models with N18 engine
For Mini R59 Roadster- All Cooper S & JCW models with N18 engine

A fuel pump is a frequently (but not always) essential component on a car or other internal combustion engineddevice. Many engines (older motorcycle engines in particular) do not require any fuel pump at all, requiring only gravity to feed fuel from the fuel tank or under high pressure to the fuel injection system. Often, carbureted engines use low pressure mechanical pumps that are mounted outside the fuel tank, whereas fuel injected engines often use electric fuel pumps that are mounted inside the fuel tank (and some fuel injected engines have two fuel pum ps: one low pressure/high volume supply pump in the tank and one high pressure/low volume pump on or near the engine).^[1] Fuel pressure needs to be within certain specifications for the engine to run correctly. If the fuel pressure is too high, the engine will run rough and rich, not combusting all of the fuel being pumped making the engine inefficient and a pollutant. If the pressure is too low, the engine may run lean, misfire, or stall.