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Shopping for BMW-540i
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Air Flow Sensor

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Mass Air Flow Sensor with 4-PinMass Air Flow Sensor with 4-Pin
A-Premium®
Mass Air Flow Sensor with 4-Pin for BMW 230i xDrive 330e 430i Alpina B7 X3 X4 X5
$69.99
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2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
AF10534, 2451641, 0280218324, 13628605565
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Mass Air Flow Sensor Assembly
A-Premium®
Mass Air Flow Sensor Assembly for BMW 540i E39 1999-2003 X5 Benz W202 Land Rover
$28.99
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2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
AF10387, 0000941048, 000094104880, 06A906461EX, 13621433567, MHK000230
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Mass Air Flow Sensor with 4-Blade
A-Premium®
Mass Air Flow Sensor with 4-Blade for BMW 330i xDrive 2019-2020 X3 X4 1.5L 2.0L
$52.99
Quantity Less than 5
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2-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
V20720177, 0281006597, 13628583496, 13628485041
ConditionNew
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Beck/Arnley 158-1069 Mass Air Flow Sensor
Beck/Arnley
Beck/Arnley 158-1069 Mass Air Flow Sensor
$147.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
158-1069
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Mass Air Flow Sensor - Delphi AF10387
Delphi
Mass Air Flow Sensor - Delphi AF10387
$162.99
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3-year warranty
90 days free return
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Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
ColorBlack & Silver
Part interchange
AF10387, 13 62 1 433 567, SU5384, SU6967, 2134213, MA1138, MA1139, 74-10098, 
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Mass Air Flow Sensor - Delphi AF10225
Delphi
Mass Air Flow Sensor - Delphi AF10225
$228.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
AF10225, 13 62 1 702 078, MA1198, 221153, 74-10115, 74-10010, 158-1073, 917-874, 
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Spectra Premium MA482 Mass Air Flow Sensor
Spectra Premium
Spectra Premium MA482 Mass Air Flow Sensor
$1,936.99
Quantity Less than 5
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
MA482, MAS0471, 2451641, 13628605565, AF10534, MA1302
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Spectra Premium MA241 Mass Air Flow Sensor
Spectra Premium
Spectra Premium MA241 Mass Air Flow Sensor
$74.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
MA241, MAF10283T, MQ7376, MAS0309, MF21157N, MF21157T, MF21157, 2451173, 
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Spectra Premium MA112 Mass Air Flow Sensor
Spectra Premium
Spectra Premium MA112 Mass Air Flow Sensor
$149.99
Quantity Less than 2
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
MA112, MAF10225T, MG0146, 641906, MQ7317, MAS0366, MF21153, MF21153T, 
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Spectra Premium MA241S Mass Air Flow Sensor
Spectra Premium
Spectra Premium MA241S Mass Air Flow Sensor
$72.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
ColorBlack
Part interchange
MA241S, 641819, MHK000230, 13621433567, AF10158, AF10283, AF10387, 59104
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Standard MAS0366 Mass Air Flow Sensor
Standard
Standard MAS0366 Mass Air Flow Sensor
$506.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
MaterialPlastic
Part interchange
MAS0366, 158-1073, 0280217800, AF10225, 2-14712, MG0146, MA112, MA241, 
...View more
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Standard MAS0309 Mass Air Flow Sensor
Standard
Standard MAS0309 Mass Air Flow Sensor
$187.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
MaterialPlastic
Part interchange
MAS0309, 158-1069, 0280217814, AF10387, 2-14678, MG0071, MG0159, MA241, 
...View more
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Vemo V20-72-5147 Mass Air Flow Sensor
Vemo
Vemo V20-72-5147 Mass Air Flow Sensor
$98.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
V20-72-5147, 0280217800, LMM2015124, AF10225, 7410199, 7410115, MA112, 917874, 
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Walker Products 245-1173 Mass Air Flow Sensor
Walker Products
Walker Products 245-1173 Mass Air Flow Sensor
$124.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
245-1173, 64-1819, 641819, 7176, 917-875, 1433567, 13621433567, MA241, 
...View more
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Walker Products 245-2173 Mass Air Flow Sensor
Walker Products
Walker Products 245-2173 Mass Air Flow Sensor
$92.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
245-2173, MF21157N
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Walker Products 245-2147 Mass Air Flow Sensor
Walker Products
Walker Products 245-2147 Mass Air Flow Sensor
$91.99
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3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
245-2147
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Walker Products 245-1147 Mass Air Flow Sensor
Walker Products
Walker Products 245-1147 Mass Air Flow Sensor
$136.99
Edit ZIP code
3-year warranty
90 days free return
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: BMW 540i
Item LocatedUnited States
Quantity1
Part interchange
245-1147, 7119, 917-874, 1702078, 1733262, 1747156, 13621403123, 13621468625, 
...View more
Show less

Mass Air Flow Sensors From $26.99

4,848+ Applications | Free Shipping | 3-Year Warranty

Your engine needs the right air-fuel mixture to run smoothly, and that's where we come in. Our MAF sensors measure airflow with lab-grade accuracy, sending real-time data to your engine computer so you get maximum power and fuel economy. When yours starts acting up, you'll know it fast.

How to Tell If You Have a Faulty Mass Airflow Sensor

Your check engine light pops on first?usually with codes P0100 to P0104. But you'll feel the problems before you see the light. Rough idling hits you at stoplights as your engine shakes or stalls from incorrect air-fuel mixture. Step on the gas and your car hesitates or stumbles instead of accelerating smoothly.

A faulty mass air flow sensor typically causes your check engine light to come on since your ECU constantly monitors sensor inputs, triggering diagnostic trouble codes in the range of P0100 to P0104. Your fuel economy tanks too?we're talking 15-30% worse gas mileage because your engine runs too rich without accurate sensor readings.

Common MAF Sensor Failure Signs:

? Check engine light: Codes P0100-P0104 tell you the sensor circuit has problems

? Poor acceleration: Engine hesitates when you need power most

? Bad fuel economy: Fuel usage jumps 20-40% as your ECU defaults to rich mixture

? Hard starting: Takes multiple tries to crank the engine, especially when cold

? Black exhaust smoke: Dark smoke means your engine's burning way too much fuel

Mass Air Flow Sensor Replacement Cost

Dealerships charge $200-$500 for MAF sensor replacement?that's parts plus labor. You're paying $100-$350 just for the sensor itself. We sell the exact same quality sensors starting at $26.99, saving you serious cash. Breaking sensor wires requires replacement which can run upwards of $100, so our sensors use the same rugged construction as OEM parts.

Installation takes 15 minutes max. Disconnect your battery, unplug the electrical connector, remove two to four screws, and swap in the new sensor. That's it. You don't need special tools or mechanic skills?just basic hand tools you already own.

Why Choose Our MAF Sensors

We stock sensors for 4,848 different vehicles?cars, trucks, SUVs?basically everything on American roads. Each sensor features platinum or gold-plated elements that measure airflow within 2% accuracy across all temperatures. You get OEM-equivalent performance at a fraction of dealer prices.

Every sensor ships free and leaves our warehouse within 1 business day. We back everything with a 3-year warranty and 90-day free returns. If it doesn't fit or work perfectly, send it back?no questions asked. That's how confident we are in our parts.

Get Your Engine Running Right

MAF sensors for 4,848+ vehicles | Starting at $26.99

Order Now

Frequently Asked Questions

Can I clean my MAF sensor instead of replacing it?

You should clean your mass airflow sensor either every six months or every time you change your oil, cleaning it when you change your air filter saves time and money. Use only MAF sensor cleaner spray?never touch the sensor wires. If cleaning doesn't fix your issues, replacement is necessary.

How long do mass air flow sensors last?

At the ten-year point (80,000 to 150,000 miles), your vehicle will likely need a new sensor. Sensors don't need regular replacement like oil filters?only replace them when they fail or cause performance problems.

Will a bad MAF sensor damage my engine?

Yes. Running with a faulty MAF sensor causes your engine to run too rich, which dumps excess fuel into your exhaust system. This unburned fuel will destroy your catalytic converter?a $1,200-$2,500 repair. Replace the $27 sensor now to avoid thousand-dollar repairs later.

Do you have the right sensor for my car?

We stock MAF sensors for 4,848 vehicle applications from virtually every manufacturer. Enter your year, make, and model on our site and we'll show you the exact sensor your vehicle needs. All our sensors are guaranteed to fit or you get your money back.

What's your return policy if the sensor doesn't work?

We offer 90-day free returns, no questions asked. If the sensor doesn't fit, doesn't fix your problem, or you're not completely satisfied, send it back for a full refund. We also provide a 3-year warranty covering any defects.