BRAND NEW *OEM Quality* mass airflow sensor to suit BMW 3 Series E46 and E36 with the M52 and M54 six-cylinder petrol engines.

A tired MAF on a six-cylinder BMW shows up as a rough idle, flat spots and lean fault codes - often with a dealer quote to match. This plug-in replacement restores correct air metering and is packed and shipped from Cranbourne VIC.

TO SUIT

The hero fitment is the E46 3 Series from 1998 to 2006 - 320i, 323i, 325i, 328i, 320Ci, 323Ci, 325Ci and the 325ti Compact - running the M52 or M54 inline six. It also fits the E36 328i 2.8L M52 from 1995 to 1999. Model-by-model dates are in the compatibility table.

FITMENT CHECK

This is the 3-pin sensor with housing and an 80mm intake neck. Match OEM 13621432356 or 1432356 on your existing unit before ordering.

OEM PART NUMBERS

13621432356
1432356
MHK100620

OTHER PART NUMBERS

VEMO: V48-72-0001
HELLA: 8ET 009 142-051
NTY: EPP-LR-004
CONTINENTAL/VDO: 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

On the M52 and M54 the hot-film air mass meter sits between the airbox and the intake boot and tells the DME how much air the engine is drawing. The DME uses that reading for fuel trim and ignition timing across the rev range.

As the sensing element ages it under-reads, so the engine runs lean and typically logs P0171 and P0174 on both banks alongside MAF codes. A fresh unit on the factory 3-pin plug brings fuel trims back into line, and it is backed by our returns policy.

COMMON SYMPTOMS OF FAILURE

Check engine light - fault codes P0100 P0101 P0102 P0103 (MAF circuit)
Lean codes P0171 and P0174 on both banks
Rough or hunting idle once warm
Hesitation or flat spot from low revs
Stalling when coming to a stop
Increased fuel consumption

[01/95 - 11/99] BMW 3 E36 328i 2.8L 6cyl M52 B28 (286S1) 142kW Convertible
[01/95 - 04/99] BMW 3 E36 328i 2.8L 6cyl M52 B28 (286S1) 142kW Coupe
[06/95 - 04/98] BMW 3 E36 328i 2.8L 6cyl M52 B28 (286S1) 142kW Sedan
[01/00 - 05/06] BMW 3 E46 320Ci 2.2L 6cyl M54 B22 (226S1) 125kW
[03/98 - 09/00] BMW 3 E46 320i 2.0L 6cyl M52 B20 (206S4) 110kW
[09/00 - 02/05] BMW 3 E46 320i 2.2L 6cyl M54 B22 (226S1) 125kW
[04/00 - 09/00] BMW 3 E46 323Ci 2.5L 6cyl M52 B25 (256S4) 125kW Convertible
[04/99 - 09/00] BMW 3 E46 323Ci 2.5L 6cyl M52 B25 (256S4) 125kW Coupe
[03/98 - 09/00] BMW 3 E46 323i 2.5L 6cyl M52 B25 (256S4) 125kW
[09/00 - 08/06] BMW 3 E46 325Ci 2.5L 6cyl M54 B25 (256S5) 141kW Convertible
[09/00 - 05/06] BMW 3 E46 325Ci 2.5L 6cyl M54 B25 (256S5) 141kW Coupe
[09/00 - 02/05] BMW 3 E46 325i 2.5L 6cyl M54 B25 (256S5) 141kW
[03/02 - 11/04] BMW 3 E46 325ti 2.5L 6cyl M54 B25 (256S5) 141kW
[06/99 - 05/00] BMW 3 E46 328Ci 2.8L 6cyl M52 B28 (286S2) 142kW
[02/98 - 06/00] BMW 3 E46 328i 2.8L 6cyl M52 B28 (286S2) 142kW

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-Series3
Barcode #	9314258096342
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	VEMO: V48-72-0001, HELLA: 8ET 009 142-051, NTY: 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