The Bosch Common Rail Pump with part number 0445010071 is the correct fuel injection pump for the Alfa Romeo 147 equipped with the 1.9 JTDm 16v engine (specifically the 150 HP version).
Here are the detailed specifics for that part:
Vehicle Fitment
Technical Details of the Pump
Type: Bosch CP1 (High Pressure Common Rail Pump)
Part Number: 0 445 010 071
Pressure: It generates the high pressure required for the Common Rail system (typically up to around 1600 bar).
Gear: This specific pump usually comes with the timing gear pre-installed or requires the gear to be swapped from your old pump. It is driven by the timing belt.
Common Issues & Advice
If you are replacing this pump, keep the following in mind:
Contamination: If the pump has failed mechanically, it often sends metal shavings through the fuel system. It is highly recommended to check (or replace) the fuel injectors and clean the fuel rail, high-pressure lines, and fuel tank thoroughly. Failure to do so will destroy the new pump very quickly.
Lubrication: These pumps are lubricated and cooled by the diesel fuel itself. Ensure you are using good quality diesel and that the low-pressure fuel pump (in the tank) is working correctly to supply the CP1 pump.
Remanufactured vs. New: Part number 0445010071 is very commonly sold as a remanufactured (exchange) unit. If you are buying a reman unit, ensure it comes from a reputable supplier (like a certified Bosch exchange center) to guarantee reliability.
Gear Timing: If your replacement pump does not come with the gear installed, you will need to transfer the gear from the old pump. This requires a special tool to lock the injection pump gear and ensure the engine timing is not disturbed. If the timing is off by even one tooth, the engine will not run correctly.
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