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Mass Air Sensor & Air Flow Meters

BMW Mass Air Sensor & Air Flow Meters

We sell OEM air mass sensors, air flow meters, and HFMs (Hot Film Meter) for many BMWs. When the mass air sensor is bad you will notice your engine running out of tune. Your fuel mileage will suffer, throttle response will be poor, and you will notice a lack of power.

There should be a Check Engine Light to alert you that the air sensor is having problems. However, there may not be a fault code for the air meter itself. Often times the code comes up as fuel trim or lean condition. In these cases the air sensor could be just one of a number of potential problems.

We only sell air sensors from Original Equipment Manufacturers like, Bosch, VDO, and Siemens. Please note that HFMs are an electrical part and cannot be returned for refund.

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OEM Walker Euro Mass Air Flow Sensor (MAF) - E36 M3 S50/52 (Euro Mode...

T#:637311

Part#: 13621403123

Ships in 1 Business Day

$ 140.99

This product was last offered at the strikethrough price on
05-07-2026

$ 136.99 USD

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$ 136.99 USD

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This Euro HFM (Hot Film Meter or mass air sensor) from the Euro M3 is larger in diameter than the USA's M3 meter. This HFM will meter and flow more air than the stock one, giving you more power. THIS REQUIRES PROPER SOFTWARE to run correctly and you may also need larger fuel injectors to prevent the engine from running lean. We've used this HFM on the 1995 M3 or any 1996+ S52 engine that has been converted to OBD-1 electronics. We prefer to use this HFM over the 540 meter because this is a direct bolt-on to the Euro airbox (for those that want a factory appearance). This HFM is not used on our OBD-2 Performance Kits or with OBD-2 Shark Injector software. This is an OEM replacement for BMW part # 13621403123. As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Dinan High Flow Air Mass Meter Kit

Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes
CARB certified for sale in all 50 states

T#:637444

Part#: D763-1500D

EO#: D-176-18

Back Ordered

Sale - Save 10% $ 584.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 526.46 USD

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Sale - Save 10%

$ 584.99

This product was last offered at the strikethrough price on
09-29-2026

$ 526.46 USD

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The Dinan Air Mass Meters are manufactured from aluminum, as compared to the plastic stock units, and have been designed to accommodate the stock electronics for increased durability and seamless integration.

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Mass Air Flow Sensor (MAF) Kit - M57

10X Entries Into Our F80 M3 Sweepstakes

T#:56507867

Part#: 13628509725KT2

In Stock

$ 171.99

This product was last offered at the strikethrough price on
08-14-2026

$ 131.99 USD

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$ 131.99 USD

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Turner Motorsport has put together a focused replacement kit featuring a genuine Bosch MAF sensor alongside all new installation hardware. The included Bosch sensor ensures your ECU receives exact airflow measurements under high load and daily driving alike, while the factory spec Torx screws and robust hose clamp ensure a precise, airtight seal against unmetered air entry.

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E30 M3 Evo III Fuel Injection Upgrade

10X Entries Into Our F80 M3 Sweepstakes

T#:4083

Part#: E30M3-EVOIII-INJ

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$ 2,318.99 USD

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$ 2,318.99 USD

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Our racing fuel injection upgrade for the E30 M3 2.5 consists of four Evo III fuel injectors, Evo III Air flow meter and custom calibrated performance chip. This kit was originally designed for use on the TMS 2.5 liter engine conversion with: Stage 3 head, Schrick cams, Evo III header and straight non cat exhaust but has been a successful upgrade on other variations of this set up. The addition of these components adds the ability to supply more fuel that the 2.5 liter high performance motor demands. Choose from 7800 or 8200 rpm redline (For off road/race use only).

Kit Includes:
1 x 13621466349 - Air Flow Meter
1 x Custom Turner Motorsport Peformance Chip
4 x 13641316511 - EVO 3 Fuel Injectors

This item fits the following BMWs:
1988-1991 E30 BMW M3

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BMW Mass Air Sensor & Air Flow Meters

OEM Walker Euro Mass Air Flow Sensor (MAF) - E36 M3 S50/52 (Euro Mode...

Dinan High Flow Air Mass Meter Kit

Mass Air Flow Sensor (MAF) Kit - M57

E30 M3 Evo III Fuel Injection Upgrade

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