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MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5
MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5
MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5
MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5
MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5
MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5
MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5

MAS4522 MASS AIR FLOW METER 5 Blades Fits 128I 323I 328I 328XI 528I 528XI X3 X5

$139.99 
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You Are Buying
Brand: ISUMO 
Aftermarket Premium High Quality
Mass Air Flow Sensor
Quantity: 1 Piece
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Part#
5WK97508Z 
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Cross-Reference
MAS4522S
13627551638 
AF10381
MAS0287 
627551638
12806026076
62 7 551 638 
128 06026 076 
8ET009142631 
86191 
38802
7551638
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Specifications:
Connector Gender Female
Connector Quantity 1
Connector Shape Oval
Notes Sensor Only
Terminal Gender Male
Terminal Quantity 5
Terminal Type Blade
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Fits:
BMW 128I 2008-2011
BMW 323I 2008-2011
BMW 328I 2007-2014
BMW 328XI 2007-2008
BMW 528I 2008-2011
BMW 528XI 2008
BMW X3 2007-2010
BMW X5 2007-2010
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The Mass Air Flow (MAF) sensor is located in the air duct between the air cleaner 
and the engines air intake. Location may be mounted to the throttle body or in the air cleaner 
housing.
The MASS Air Flow sensor is a computer input that measures the amount of 
air entering the engine. Barometric pressure may also be calculated either in the sensor or by 
the computer for correct air/fuel mixture. The computer uses this information for air/fuel 
mixture control, ignition timing and to aid the transmission in pressure control for accurate 
shifting. 
Failure Symptoms: Malfunction Indicator Light  illumination, failed emission test, 
engine hesitation on acceleration, poor fuel economy, poor engine performance, engine no start condition, engine surging
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