BRAND NEW *OEM Quality* mass airflow sensor to suit BMW 5 Series E39 with M52, M54 and M62 petrol engines.

An E39 that idles rough, stumbles off the line or throws a check engine light often has a worn air mass meter. This direct fit unit gets the big sedan or Touring running smoothly again and is dispatched from Melbourne.

TO SUIT

Covers the E39 5 Series sedan and Touring from 1996 to 2003: 520i and 523i (M52 2.0L and 2.5L), 528i (M52 2.8L), 525i and 530i (M54 2.5L and 3.0L) and the early 535i V8 (M62 3.5L, 1996 to 1998). Dates for each model are in the compatibility table.

FITMENT CHECK

The 523i and 528i take this sensor from 10/1998 build only. Check that your existing unit carries OEM 13621432356 or 1432356 before ordering.

OEM PART NUMBERS

13621432356
1432356
MHK100620

OTHER PART NUMBERS

V48-72-0001
8ET 009 142-051
EPP-LR-004
5WK9607Z

PACKAGE INCLUDES

1 x BRAND NEW mass airflow sensor - complete unit with housing and 3-pin connector. 80mm intake neck. 12V operating voltage.

ABOUT THIS SENSOR

In the E39 the air mass meter is clamped to the airbox outlet and feeds the DME a live air mass reading for fuelling and timing. On the heavier 5 Series a drifting sensor is most noticeable under load - pulling away, overtaking or towing.

A failing unit usually reads low and leans out the mixture, which shows up as a lazy, hesitant engine and rising fuel use. This replacement is matched to the OEM part number and has a low return rate.

COMMON SYMPTOMS OF FAILURE

Check engine light - fault codes P0100 P0101 P0102 P0103 (MAF circuit)
Hesitation when pulling away or overtaking
Lean codes P0171 and P0174
Rough idle at operating temperature
Stalling in slow traffic
Increased fuel consumption

[01/96 - 06/03] BMW 5 E39 520i 2.0L 6cyl M52 B20 (206S3)/ M52 B20 (206S4) 110kW
[10/98 - 08/00] BMW 5 E39 523i 2.5L 6cyl M52 B25 (256S3)/ M52 B25 (256S4) 125kW
[09/00 - 06/03] BMW 5 E39 525i 2.5L 6cyl M54 B25 (256S5) 141kW
[10/98 - 08/00] BMW 5 E39 528i 2.8L 6cyl M52 B28 (286S1)/ M52 B28 (286S2) 142kW
[03/01 - 06/03] BMW 5 E39 530i 3.0L 6cyl M54 B30 (306S3) 170kW Sedan
[09/00 - 12/03] BMW 5 E39 530i 3.0L 6cyl M54 B30 (306S3) 170kW Touring
[10/96 - 08/98] BMW 5 E39 535i 3.5L V8 M62 B35 (358S1) 173kW

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	CAF016-Series5
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CAF016
Reference OEM Number	13621432356
Other OEM Numbers	13621432356, 1432356, MHK100620
Related Part Numbers	5WK9607Z, AM9607N, AMM9201, AF10185
Trade Part Numbers	V48-72-0001, 8ET 009 142-051, EPP-LR-004
Product Specifics
Product Type	SENSOR
Sensor Type	Mass Airflow Sensor
Number of pins	3
Voltage	12 V
Housing Colour	Black
Housing Type	with housing
Mounting Type	Pipe-neck
Compatible Makes	BMW
Fitment Type	Direct Replacement
Other Details
Note	3-pin plug and 80mm intake neck - compare with your old sensor