The Bosch 0445010102 is the common rail diesel fuel pump for the Volvo S40 1.6D (as well as the V50, C30, and other Ford/PSA vehicles from that era).
Here is the detailed breakdown of the part, its applications, and important notes for your Volvo:
Vehicle Fitment
Model: Volvo S40 II (2004–2012)
Engine: 1.6 D (D4164T)
Alternative Models: This pump is also used in the Volvo V50, C30, C70, Ford Focus 1.6 TDCi, and Mazda 3 1.6 CD.
Technical Details
Part Number: 0 445 010 102 (Bosch)
Type: High-pressure fuel pump (CP1 or CP1H variant)
Pressure: Generates up to 1,600 bar (approx. 23,000 psi) of rail pressure.
Drive: Driven by the timing belt (often shares a belt with the vacuum pump).
Common Symptoms of Failure
If you are looking to replace this pump, the 1.6D engine (PSA DV6 engine) is known for fuel system issues. Symptoms indicating this pump (or the system) is failing include:
Loss of Power / Limp Mode: The car will have significantly reduced power and limited RPM.
Hard Starting: Especially hot starting issues.
Contamination: This specific pump is prone to mechanical failure, sending metal shavings into the fuel rail and injectors. If the pump fails, it is critical to flush the entire fuel system (lines, rail, injectors) or the new pump will be destroyed immediately.
Check Engine Light: Codes related to fuel rail pressure (e.g., P0087, P0191).
Important Installation Advice
Timing Belt: The pump is driven by the timing belt. If you are replacing the pump, it is highly recommended to replace the timing belt and tensioner if they are due, as the belt must be removed to access the pump.
System Flush: As mentioned above, if the old pump failed due to internal wear, metal particles travel through the low-pressure and high-pressure sides. You must clean the fuel tank, replace the fuel filter, and often send the injectors out for cleaning/calibration.
Genuine Parts: It is highly advisable to use a genuine Bosch pump or a high-quality OEM equivalent for this engine. Cheap aftermarket pumps for the 1.6D often have a high failure rate.
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