Mercedes-Benz 400SEL Fuel Level Sending Unit Replacement Cost.

The average cost for a Fuel Level Sending Unit Replacement is between $823 and $843. Labor costs are estimated between $70 and $89 while parts are priced between $753 and $754. Estimate does not include taxes and fees.

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Best Practices

The Fuel Level Sending Unit may be attached to the fuel pump assembly and require removal of the fuel tank to gain access. It this case, if changing the sending unit it may be wise to change the fuel pump as well.

Poor quality fuel can cause deposits to form on the Fuel Level Sensor contacts, affecting proper operation of the sensor.

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