1AEAF00037-Mass Air Flow Sensor



Mass Air Flow Sensor DIY Solutions EMS00023

99-03 BMW 3, 5 Series; 99-00 Sonata 2.5L; 02-05 Freelander; 04-06 Epica, Verona; 00 V40 S40 Air Flow
$ 44.95
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DIY Solutions
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Part 1AEAF00037

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Part 1AEAF00037
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Vehicle Fit

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How-To & Tools

Part Details

  • Air Flow Sensor Housing Option:   Includes Housing

Complete Repair in One Purchase - Stop searching for parts individually and complete your repair with a customized kit or set from DIY Solutions.

High-Quality Parts from Trusted Brands - DIY Solutions' kits and sets are selected from the best automotive brands and include hard-to-find and even obsolete parts you may need for your vehicle.

Guaranteed Fit - DIY Solutions ensures its selected parts are quality-tested to guarantee fit and function.

Install Tip: You may be required to reset the vehicle computer after installation of this part.

Direct Fit Replacement - Guaranteed to fit and function for your specific application
Quality Tested - built to a strict level of product standards.

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

Returns: Parts with electrical components cannot be returned once installed.

FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories.  Shipping is not available to Canada.

Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses.  Final shipping costs are available at checkout.

How to Replace Mass Airflow Sensor 01-05 BMW 325Xi

Created on: 2019-06-18

Watch this video to learn how to replace the mass airflow sensor (MAF) on your 01-05 BMW 325 Xi or similar 3 Series BMW. 1A Auto shows you how!

  1. step 1 : Removing the Mass Airflow Sensor
    • Disconnect the MAF electrical connector
    • Loosen the worm clamp securing the intake elbow to the MAF
    • Slide the intake elbow off the MAF
    • Release the mounting clip on each side of the MAF
    • Remove the MAF from the air box
  2. step 2 : Installing the Mass Airflow Sensor
    • Take note of the arrow on the MAF indicating airflow direction
    • Check the rubber O ring on the air box and replace it if necessary
    • Insert the MAF into the air box
    • Secure the MAF with the mounting clip on each side
    • Reinstall the intake elbow onto the MAF
    • Tighten the worm clamp on the intake elbow
    • Reconnect the MAF electrical connector

Tools needed for replacement

  • Screwdrivers & Related

    Flat Blade Screwdriver

Installation Video
Watch video

Fits these Makes

Year Make Model Description
2000BMW 323Ci BMW 323Ci Mass Air Flow Sensor
1999-2000BMW 323i BMW 323i Mass Air Flow Sensor
2001-2002BMW 325Ci BMW 325Ci Mass Air Flow Sensor
2003BMW 325Ci BMW 325Ci (Built Before 2/03 Production Date) Mass Air Flow Sensor
2001-2005BMW 325Xi BMW 325Xi Mass Air Flow Sensor
2001BMW 325i BMW 325i Mass Air Flow Sensor
2002BMW 325i BMW 325i (Built Before 8/02 Production Date) Mass Air Flow Sensor
2000BMW 328Ci BMW 328Ci Mass Air Flow Sensor
1999-2000BMW 328i BMW 328i Mass Air Flow Sensor
2001-2003BMW 525i BMW 525i Mass Air Flow Sensor
1999-2000BMW 528i BMW 528i Mass Air Flow Sensor
1999-2000BMW Z3 BMW Z3 L6 2.8L Mass Air Flow Sensor
1999-2002BMW Z3 BMW Z3 L6 2.5L Mass Air Flow Sensor
1999-2000Hyundai Sonata Hyundai Sonata V6 2.5L Mass Air Flow Sensor
2002-2005Land Rover Freelander Land Rover Freelander Mass Air Flow Sensor
2004-2006Suzuki Verona Suzuki Verona Mass Air Flow Sensor
2000Volvo S40 Volvo S40 Mass Air Flow Sensor
2000Volvo V40 Volvo V40 Mass Air Flow Sensor

Part Interchange

Brand Label Part Number
DIY Solutions EMS00023

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

DIY Solutions
In Stock
Part 1AEAF00037
Product Reviews
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5.00/ 5.0 5
99 323i works fantastic
March 3, 2017
My maf sensor for my 99 323i sedan went bad and considering the alternatives (OEM $500 and VDO Siemens $200) i opted to buy this 38 dollar unit to save a considerable amount of money. My car was throwing a P0101 CEL and this new unit fixed all my running issues. Put at least 1k miles on the unit so far and car runs fantastic. Thanks 1A Auto for fast shipping as well.
July 4, 2019
Part was as described ::so far its functionality is great
Fast shipping and great fit
Martin Appliance - Brian Heisey
July 20, 2019
The sensor fit perfectly. I did have a new set of codes come up since and found it to be giving bad data. They'll ship out a free replacement right away.
Good product
April 11, 2020
Items worked good! Mass air flow sensor cleared my codes
Best Buy
August 13, 2020
It works perfectly with my #25 xit Bmw. can't believe how cheap it was comparing to other places
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