11721438814 Continental Mass Air Flow Sensor; Secondary Unit for Emissions Air Pump
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Continental Mass Air Flow Sensor; Secondary Unit for Emissions Air Pump | 11721438814

BMW X5, X3, 325i, 530i, 330i, 330Ci, 525i, M5, 325Ci, 325xi & more
$71.99
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$74.99
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$440.11
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P/N: 11721438814 Continental OEM FREE SHIPPING
Description:
Secondary Unit for Emissions Air Pump
1 per car.
Cross References:
  • 5WK9639Z
  • W01331662937

The mass air flow sensor in your BMW measures the volume and density of air entering the engine. The vehicle’s engine control module uses this measurement to determine the fuel needed to optimize combustion, engine power, and fuel economy.

Mass air flow sensors fail when they can no longer accurately measure the amount of air entering the engine. Dirty air entering the engine from a poor quality or clogged air filter or oil-contaminated air from a failed PCV valve can interfere with the mass air flow sensor’s ability to measure air. When this happens, the engine control module provides too much or too little fuel, causing excessively rich or lean engine running conditions that make the engine run rough, stall, and not start. If the engine control module determines the mass air flow sensor is faulty, it will turn on the check engine light and provide fuel to the engine based on a predetermined program to limit performance.

Faulty mass air flow sensors should always be replaced to restore engine performance and fuel economy. Unfortunately, mass air flow sensor cleaners often only restore mass air flow function temporarily. The solvent used to clean away dirt and debris from the sensor can erode sensor insulation, causing the sensor to short out shortly after use.

View more BMW Mass Air Flow Sensors.

Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

Frequently Viewed Together

We found 4 additional part(s) that are frequently viewed together.

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What This Continental Mass Air Flow Sensor Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

BMW
04-06 - 325Ci E46
03-03 - 325Ci
For models with production date from 3/2003.
04-05 - 325i
03-03 - 325i
For models with production date from 3/2003.
04-04 - 325i Sport Wagon
03-03 - 325i Sport Wagon
For models with production date from 3/2003.
04-05 - 325xi
03-03 - 325xi
For models with production date from 3/2003.
04-04 - 325xi Sport Wagon
03-03 - 325xi Sport Wagon
For models with production date from 3/2003.
04-06 - 330Ci E46
03-03 - 330Ci
For models with production date from 3/2003.
04-05 - 330i
03-03 - 330i
For models with production date from 3/2003.
04-05 - 330xi
03-03 - 330xi
For models with production date from 3/2003.
04-04 - 525i
05-05 - 525i
For models with M54 engine only.
03-03 - 525i Sport Wagon
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