Walker Products Mass Air Flow Sensor P/N:245-1451
Walker Products 245-1174 mass air flow sensor for the 2003-2006 BMW 325Ci 6-cylinder 2.5L and other vehicles measures the air flowing into the engine. The Walker Products mass air flow sensor is a new part that comes with its housing.
A failing mass air flow sensor can show up as a rough idle, hesitation when you accelerate or a check engine light. Before you replace the sensor, rule out an intake air leak or a restricted air filter, since either can also upset the airflow readings.
The fitment also covers the 2004-2006 BMW X3 6-cylinder 2.5L and the 2003-2005 BMW 325i 6-cylinder 2.5L. If your BMW is not one of these, open the "Vehicles it fits" section and look up your exact model and engine.
Fit and size
Build and materials
One mass air flow sensor with its housing; this listing holds one, and each vehicle takes one. Mounting hardware is not included, so plan on new fasteners, since the old ones may not be reusable.
Interchange: 213-4557 · 74-10124 · 74-10237 · 64-1817
5S2991 · 13627513957 · 13627566984 · AF10223 · 86181 · MAS0289 · A2C59511576 · SU6951
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This part cross-references / interchanges with the following part numbers:
Is this the right mass air flow sensor for a 2003-2005 BMW 325i 6-cylinder 2.5L?
Yes. Walker Products 245-1174 fits the 2003-2005 BMW 325i 6-cylinder 2.5L, and that car takes one sensor.
Is this a mass air flow sensor for the 2004-2006 BMW X3 6-cylinder 2.5L?
Yes. The 245-1174 is listed for the 2004-2006 BMW X3 6-cylinder 2.5L, which also takes one sensor.
Does the Walker 245-1174 sensor come with its housing, or is it sensor only?
It comes with its housing. Mounting hardware is not included, so plan on new fasteners rather than reusing the old ones.
How many terminals does the connector on this mass air flow sensor have?
The connector is female and has 6 terminals.
Can touching this mass air flow sensor damage it?
Yes. Oils from your hands, or even air pollution, can damage the sensor, so handle it carefully during installation.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.