BRAND NEW *OEM Quality* mass airflow sensor to suit BMW Z4 Roadster and Coupe E85, E86 and E89 with M54, N52 and N54 engines.

A Z4 should feel sharp - if yours has gone soft on the throttle or idles unevenly, the MAF is a common culprit. This direct fit insert restores crisp response and is dispatched from Melbourne.

TO SUIT

Fits the E85 Roadster 2.5i and 3.0i M54 (2003-2006), the E85 and E86 2.5si and 3.0si N52 (2006-2008), and the E89 sDrive23i and 30i (N52) plus the twin-turbo sDrive35i and 35is (N54) from 2009 to 2016. Dates are in the compatibility table.

FITMENT CHECK

Insert only - bolts into your original housing with the supplied seal ring. Match OEM 13627520519 or 7520519 before ordering.

OEM PART NUMBERS

13627520519
7520519
5WK97502

OTHER PART NUMBERS

VEMO: V20-72-5141
HELLA: 8ET 009 142-641
NTY: EPP-BM-015
CONTINENTAL/VDO: 5WK97502Z
PIERBURG: 7.07759.71.0
DELPHI: AF10446
WALKER: 245-1188

PACKAGE INCLUDES

1 x BRAND NEW mass airflow sensor - insert only with seal ring, 5-pin connector and integrated air temperature sensor, 12V. Fits your original MAF housing.

ABOUT THIS SENSOR

Across the M54, N52 and N54 engines in the Z4 this sensor reads air mass and intake temperature for the DME. On the turbocharged N54 sDrive35i and 35is an inaccurate reading also upsets boost and fuelling under load.

Swapping in a fresh sensor brings back throttle response and a smooth idle. Low fault rate and plug-and-play fitment.

COMMON SYMPTOMS OF FAILURE

Check engine light - fault codes P0100 P0101 P0102 P0103 (MAF circuit)
Lean codes P0171 and P0174
Soft or uneven throttle response
Rough idle
Hesitation under load
Increased fuel consumption

[07/03 - 12/06] BMW Z4 E85i 2.5L 6cyl M54 B25 (256S5) 141kW
[07/03 - 12/05] BMW Z4 E85i 3.0L 6cyl M54 B30 (306S3) 170kW
[01/06 - 08/08] BMW Z4 E85 si 2.5L 6cyl N52 B25 A 160kW
[01/06 - 08/08] BMW Z4 E85 si 3.0L 6cyl N52 B30 BF / N52 B30 A 195kW
[04/06 - 08/08] BMW Z4 E86 si 3.0L 6cyl N52 B30 BF / N52 B30 A 195kW
[03/09 - 08/11] BMW Z4 E89 sDrive 23i 2.5L 6cyl N52 B25 A / N52 B25 BF 150kW
[02/09 - 08/11] BMW Z4 E89 sDrive 30i 3.0L 6cyl N52 B30 BF / N52 B30 A / N52 B30 B 190kW
[02/09 - 02/12] BMW Z4 E89 sDrive 35i 3.0L 6cyl N54 B30 A 225kW
[03/10 - 08/16] BMW Z4 E89 sDrive 35is 3.0L 6cyl N54 B30 A 250kW

Can I clean my MAF sensor instead of replacing it?

Yes - if the sensor is contaminated rather than electrically failed, cleaning with a dedicated MAF sensor cleaner spray can restore correct readings. Do not use brake cleaner or generic electrical contact cleaner as these leave residue that damages the sensing wire. Allow the sensor to dry completely before reinstalling. If cleaning does not resolve the fault codes, the sensor requires replacement.

What is the difference between a MAF sensor and a MAP sensor?

A MAF (Mass Air Flow) sensor directly measures the mass of air entering the engine using a hot wire element in the intake. A MAP (Manifold Absolute Pressure) sensor measures intake manifold pressure to calculate air density. Most modern engines use one or the other - some use both. Your vehicle service manual or OBD2 fault codes will confirm which sensor type your engine uses.

Will a faulty MAF sensor cause my vehicle to fail an emissions test?

Yes. A faulty MAF sensor causes the ECU to miscalculate fuel delivery, typically resulting in a rich running condition that increases CO and hydrocarbon emissions. Most roadworthy and emissions checks will fail a vehicle with an active MAF sensor fault code or visibly excessive exhaust smoke.

What are the symptoms of a bad MAF sensor?

Common symptoms include rough idle, hesitation or stumbling on acceleration, poor fuel economy, black smoke from the exhaust, and an illuminated Check Engine light. Your ECU may log fault codes P0100 to P0104.

Can I drive with a faulty MAF sensor?

You can drive short distances but it is not recommended. A faulty MAF sensor causes the ECU to run incorrect fuel mixtures, which can damage the catalytic converter and O2 sensors over time. Have it replaced as soon as possible.

How do I test if my MAF sensor is bad?

Use an OBD2 scanner to check for fault codes P0100-P0104. You can also use a multimeter or live data scanner to check the sensor output voltage against your vehicle's specification. A reading significantly outside spec confirms a faulty sensor.

What causes a MAF sensor to fail?

The most common causes are a dirty or contaminated sensing element (often from a missing or damaged air filter), oil contamination from an over-oiled aftermarket air filter, heat damage, or general wear over time.

Do I need to reset my ECU after replacing the MAF sensor?

It is good practice to clear any stored fault codes using an OBD2 scanner after replacement. Some vehicles will self-adapt within a short drive cycle, but clearing codes ensures the ECU recalibrates from a clean baseline.

Identification
SKU	AM97502NG-Z4
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	AM97502NG
Reference OEM Number	13627520519
Other OEM Numbers	7520519, 13627520519, 5WK97502
Related Part Numbers	5WK97502Z, AF10446, AM97502N, TAF022, MAS0286
Trade Part Numbers	VEMO: V20-72-5141, HELLA: 8ET 009 142-641, NTY: EPP-BM-015
Product Specifics
Product Type	SENSOR
Sensor Type	Mass Airflow Sensor
Number of pins	5
Connector Shape	oval
Voltage	12 V
Housing Colour	Black
Housing Type	without housing
Mounting Type	Bolted
Compatible Makes	BMW
Fitment Type	Direct Replacement
Outer Diameter	33 mm
Other Details
Note	Insert only with seal ring - fits your original MAF housing