BMW 740Ld xDrive Diesel Injection Pump Replacement Cost

Know what price you should pay to get your vehicle fixed.

The average cost for a BMW 740Ld xDrive diesel injection pump replacement is between $1,810 and $1,931. Labor costs are estimated between $457 and $578 while parts are priced at $1353. Estimate does not include taxes and fees.
Note about price: The cost of this service or repair can vary by location, your vehicle's make and model, and even your engine type. Related repairs may also be needed. Talk with a RepairPal Certified shop to learn which repairs might be right for you.

How does the diesel injection pump work?

The diesel injection pump, also called high pressure fuel pump (HPFP), is driven, on most vehicles, by the timing chain, timing belt, or timing gear. It receives slightly pressurized fuel from the fuel tank in a large volume, and attempts to compress the liquid, resulting in a moderate flow at an extremely high pressure. In fact, the fuel line pressure this pump creates can reach 27,000 PSI at high engine speeds. This high pressure is needed to provide diesel to the engine as fast as fuel is needed.

What are the symptoms related to a bad diesel injection pump?

Hard starting, no starting or stalling immediately after starting are common symptoms of a failed or failing diesel injection pump. When the vehicle does start, misfires, loss of power and illumination of the check engine light for OBD codes relating to exhaust and emissions, fuel delivery, and misfires will be present. Also, getting the engine to speed up may be sluggish, and the engine may randomly surge with power.

Can I drive with a diesel injection pump problem?

After the fuel injection pump fails, the fuel distributor and injectors will not have sufficient power to drive the vehicle without severe driveability issues. Also, continuing to drive with a failed high pressure fuel pump could lead to metal shavings being passed through the fuel system as the fuel pump continues to spin. Since modern diesel fuel systems have return fuel lines, the metal shavings can make their way through the high pressure fuel pump, through the fuel distributor, to the injectors, and through the return line to the fuel tank, and back into the new LPFP, once replaced. To help avoid this costly repair, the vehicle should be towed to a repair facility.

How often do diesel injection pumps need to be replaced?

High pressure fuel pumps on diesel engines have incredibly long service lives. They tend to last between 100,000 and 150,000 miles, and repeat replacements are not typical. A small handful of European commuter cars recommend replacement as scheduled maintenance, but this is a very small number. It is important that the fuel pump be periodically inspected for leaks, wear, shaft play, and metal shavings, as failure of the injection pump can send these metal shavings through the entire fuel system.