Mercedes-Benz S350 Diesel Injection Pump Replacement Cost.

The average cost for a Diesel Injection Pump Replacement is between $4114 and $5659. Labor costs are estimated between $466 and $589 while parts are priced between $3648 and $5070. Estimate does not include taxes and fees.
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Learn More About Diesel Injection Pump Replacement Cost

Best Practices

The injection pump may fail if the fuel supply pump doesn't deliver the proper amount of fuel to the injection pump. Therefore, it's very important that the supply pump is checked and replaced if necessary.

Common Symptoms

Failure of the diesel injection pump can cause hard starting, cylinder misfiring, or a lack of power.

Common Misdiagnoses

The injector pump may be replaced when the problem is actually dirty fuel filter(s), low engine compression, worn out glow plugs, failed fuel supply pump, defective glow plug relay, improper injector pump timing, and/or poor fuel quality.

Most Common Mercedes-Benz S350 Repairs

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