Non Genuine version mechanical fuel pump drives off the camshaft at the rear of the motor. These pumps are generally reliable but when a diaphragm goes bad it can be very bad as often raw gas is pumped into the engine. This dilutes the oil and causes severe wear. Fits all 998cc engines. Will also fit 1275cc engines prior to 1990. For 1275cc engines after 1990, use part number AZX1817.