BRAND NEW *OEM Quality* mass air flow sensor to suit BMW X1 X3 and X4 petrol SUVs with the N20 or B48 2.0L turbo engine.

A tired meter makes a loaded SUV feel sluggish when merging or towing and often brings up the engine light. Swap it in a few minutes and get the power back - stocked in Melbourne and sent express.

TO SUIT

Made for the X3 F25 xDrive20i and xDrive28i (2011 to 2017) and the first-generation X1 E84 sDrive20i and xDrive28i with the N20 B20 engine. The X4 F26 xDrive20i shares the same meter.

The front-drive X1 F48 and X2 F39 with the B48 engine are covered for early builds only - see FITMENT CHECK.

FITMENT CHECK

On the X1 F48 this meter suits cars built from 10/2015 to about 07/2017 (sDrive20i) or 03/2018 (xDrive20i). Later builds and the X2 before 06/2018 use a different meter - check the build date in the compatibility list and match OEM 13627602038.

OEM PART NUMBERS

BMW: 13627602038
BMW: 7602038
MINI: 13627602038

OTHER PART NUMBERS

0280218266
V20-72-5174
8ET358095461
EPP-BM-018
245-1292
2505120
7.07759.65.0
AM8266GEN
AMM9416

PACKAGE INCLUDES

1 x mass air flow meter insert with 4-pin oval connector. Insert only - fits into your existing intake duct housing. No air temperature sensor built in.

ABOUT THIS SENSOR

The meter reports how much air the turbo engine is drawing in so the DME can match fuel and boost. In a heavier all-wheel-drive X3 or X4 a low reading shows up first under load - slow overtakes and a lazy response climbing hills.

On the B48 X1 F48 a failing meter commonly causes a rough idle and stalling as you come to a stop.

COMMON SYMPTOMS OF FAILURE

Sluggish response when merging or towing
Engine light with reduced power mode
Stalling or rough idle at low speed
Fault codes P0100 P0101 or P0102
Lean running code P0171

[09/11 - 06/15] BMW X1 E84 sDrive 20 i (2.0L 4cyl N20 B20 A 135kW)
[03/11 - 06/15] BMW X1 E84 xDrive 28 i (2.0L 4cyl N20 B20 A 180kW)
[07/15 - 06/22] BMW X1 F48 sDrive 20 i (2.0L 4cyl B48 A20 A / B48 A20 F 141kW) - built from 10/15 built to 07/17
[07/15 - 06/22] BMW X1 F48 xDrive 20 i (2.0L 4cyl B48 A20 A / B48 A20 F / B48 A20 B 141kW) - built from 10/15 built to 03/18
[07/15 - 06/22] BMW X1 F48 xDrive 25 i (2.0L 4cyl B46 A20 B / B42 S20 A / B48 A20 B Euro 6 170kW) - built from 10/15 built to 10/17
[11/17 - 10/23] BMW X2 F39 sDrive 20 i (2.0L 4cyl B48 A20 A / B42 S20 A Euro 6 141kW) - built from 06/18
[10/11 - 08/17] BMW X3 F25 xDrive 20 i (2.0L 4cyl N20 B20 A 135kW)
[04/12 - 08/17] BMW X3 F25 xDrive 28 i (2.0L 4cyl N20 B20 A 180kW)
[04/14 - 03/18] BMW X4 F26 xDrive 20 i (2.0L 4cyl N20 B20 A 135kW)
[08/15 - 07/18] BMW X5 F15 / F85 xDrive 40e (2.0L 4cyl N20 B20 A 230kW) - built from 10/15 built to 06/18

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	CAF189-X
Brand	Aftermarket OEM Replacement
Part Numbers
Part Number	CAF189
Reference OEM Number	13627602038
Other OEM Numbers	13627602038, 7602038
Related Part Numbers	AM8266GEN, 0280218266, AMM9416
Trade Part Numbers	0280218266, V20-72-5174, 8ET358095461, EPP-BM-018, 245-1292
Product Specifics
Product Type	SENSOR
Sensor Type	Mass Air Flow (MAF) Sensor
Number of pins	4-Pin
Connector Shape	oval
Voltage	12 V
Housing Type	without housing
Mounting Type	Bolted
Compatible Makes	BMW
Fitment Type	Direct Replacement
Other Details
Note	Insert only. F48 X1 built to mid 2017-2018 only - see fitment