The best mass air flow sensors, compared.
Top pick: TUCKBOLD Cruze MAF Best value: HouYeen 8V21 MAF – About £19.99 for the later Ford number 8V21-12B579-AA, with 3.9 from 59 reviews. It is a different suffix from the top pick. Updated October 2026.
A mass air flow sensor tells the engine computer how much air is entering so it can set fuel and, on many diesels, exhaust-gas recirculation. If the car has a flat spot, a rough idle, smoke or a warning light after a code such as or, the replacement has to match the old sensor's number, pins and housing. Cheaper meters have the most ratings and still attract early-failure comments. Whether the lamp means a new sensor is set out in the [mass air flow sensor symptoms](/hub/car-parts/mass-air-flow-sensor/sub/mass-air-flow-sensor-symptoms) guide.
A mass air flow sensor tells the engine computer how much air is entering so it can set fuel and, on many diesels, exhaust-gas recirculation.
38 products checked · 62 hrs invested · +21,400 readers
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Personal buying guide
Question 1 of 2
Which number is on the sensor you removed?
The TUCKBOLD unit is a 5-pin, 210 g assembly at £33.49 for Chevrolet Cruze hatchbacks of 2012 to 2013 and the Astra J CDTi engines printed on the listing, against OE 55561912. The listing says the part is non-OEM. The rating is 5.0 from one review, and the file has no review text, so there is no account of idle, smoke or a warning light. Mounting is given as flange mount or none, which does not tell you how the housing sits in the duct. It is much heavier than the 60 g inserts, which matters when the broken piece is the whole assembly. One star from one person is not a sample you can set beside 98 reviews on the 6C11 HouYeen.
Pros
Cons
Best for: A 2012–2013 Cruze hatchback, or a listed Astra J CDTi, whose old sensor is the 5-pin 55561912 assembly.
Less suitable: An 8-pin Vauxhall plug, or a buyer who reads 5.0 as a tested result.
Specifications
Common questions
Is this an OEM Chevrolet part?
The listing says it is a non-OEM part designed to fit the Cruze and the Astra engines it names, against OE 55561912.
How many pins?
Five pins. Materials listed as plastic and metal. Weight 210 g.
How strong is the rating?
The listing shows 5.0 from 1 review. There is no review text in the file.
The Frankberg listing is a 5-pin, 12 V meter at £22.99, weighing 70 g and measuring 11 × 7 × 6 cm, rated 4.8 from five reviews, against 197400-3021 and 1X43-12B579-AB. The only review text in the file is a short German comment that it fits, so there is no UK account of a warning light going out or of an early failure. The model bullets run from Jaguar and Land Rover into Mazda, Toyota and Volvo, which is wider than those two numbers can confirm. Five stars on five ratings are a thinner file than 4.2 from 98 on the 6C11 HouYeen. The useful fact is the five-pin plug, and only when that count and 1X43-12B579-AB match the sensor you removed.
Pros
Cons
Best for: A car whose old sensor is 5-pin and reads 1X43-12B579-AB or 197400-3021.
Less suitable: An 8-pin Astra or Cruze plug, or a purchase made from the longest model name on the page.
Specifications
Common questions
How many pins does this plug have?
The listing says 5-pin, 12 V DC, petrol or diesel, electrical output.
Which part number should match?
197400-3021 and 1X43-12B579-AB. The same page also names many Mazda, Toyota and Volvo models. Use the number on your sensor, not the longest model list.
How many UK reviews are in the extract?
The listing average is 4.8 from 5 reviews. The only review text in the file is a short German fit comment.
Across 98 amazon.co.uk reviews, the HouYeen 6C11 insert is a 58 g digital flange meter at £17.99 for OE 6C11-12B579-AA. A 2009 Galaxy TDI owner described limp mode clearing after a P010F code, using a plug and two Torx screws by the air filter. A 2008 Citroen Relay 2.2 review said the engine light went out and idle returned, set against a dealer quote of over £60. A Transit 2.4 MK7 swap was described as about two minutes for a P1103 complaint, and that reviewer later said the code came back. Other UK comments report immediate limp mode, no change on a Ford Mondeo 2.0 diesel, and a failure after about a month once a returns window had passed. The listing does not print a pin count or a warranty. It is the top pick in this set because the review file is the deepest, and that file still includes early failures.
Pros
Cons
Best for: A Transit MK7, Galaxy, S-MAX, Mondeo MK4 diesel, Boxer or Relay whose old sensor reads 6C11-12B579-AA.
Less suitable: A car on 7M51-12B579-BB or 8V21-12B579-AA, or a Mondeo 2.0 diesel already reported as a mismatch.
Specifications
Common questions
Which Ford number is this listed against?
The listing model number is 6C11-12B579-AA (also written 6C1112B579AA), plus 1376235. Match that suffix to the sensor on the car before you order.
Is the output analogue or digital?
The amazon.co.uk listing says digital output and flange mount. It does not state a pin count.
Does the listing include a warranty?
No warranty period is printed in the listing for this ASIN.
The HouYeen 8V21 meter is a 60 g analogue flange insert at £19.99, rated 3.9 from 59 reviews, for OE 8V21-12B579-AA. A 2012 Citroen Relay motorhome review said the light went out and the OBD readings looked accurate, and the buyer compared the price with a parts centre. An S-MAX and a 2012 Mondeo Titanium were described as fitted and working. The same file includes a P0103 code after the original fault cleared, a failure under 500 miles, and an immediate malfunction light that was returned. The grams-per-second line on the page is marked Predicted, so it is not a confirmed measuring range. This is the best value when your old part is the 8V21 suffix, and it is a different sensor from the £17.99 6C11 listing even though both titles name Mondeo and Transit.
Pros
Cons
Best for: A Fiesta MK6, Transit MK8, Ranger, Evoque or 2011-on Relay whose sensor reads 8V21-12B579-AA.
Less suitable: A 6C11 Transit MK7 or a 7M51 Focus, or anyone treating the Predicted grams-per-second line as a specification.
Specifications
Common questions
Is this the same part as the 6C11 Mondeo sensor?
No. This listing uses OE 8V21-12B579-AA. The other HouYeen listing uses 6C11-12B579-AA. Check the number on your sensor.
What output does the listing state?
Analogue output, flange mount, 12 V maximum supply, weight 60 g.
Is the grams-per-second range a tested figure?
The listing marks the measuring range as Predicted. Treat it as unpublished.
This HouYeen unit weighs 230 g, costs £19.99 and is rated 3.9 from 31 reviews, against OE 0281002618 and 55350048. The title says Saab, while the bullets also name Astra H, Corsa D, Vectra C, Alfa 156 and several other ranges. A UK review called it well packaged and the same as the OE part. Another buyer returned it as not for the model advertised. A German review said it failed after two days, and a Spanish review said it failed after about three weeks and about 150 km, so those two short-life notes are not UK write-ups. Only four review bodies sit behind the 31 ratings. The listing says analogue or digital, so the signal type is not fixed, and there is no pin count or warranty line.
Pros
Cons
Best for: A Saab 9-3 or 9-5, or an Astra H, Corsa D or Vectra C, only when the old sensor reads 0281002618 or 55350048.
Less suitable: Any Vauxhall bought from the Saab title alone, or a car that needs a stated pin count.
Specifications
Common questions
Is this only for Saab?
The title says Saab. The fitment bullets also list Astra H, Corsa D, Vectra C, Signum, Antara, Alfa 156, Fiat and Suzuki. Check OE 0281002618 or 55350048 on your part.
Analogue or digital?
The listing says analogue or digital, so the signal type is not fixed in the product data.
Will it fit a Vauxhall?
Only the Vauxhall and Opel models printed on the listing, and only if the OE number matches. One reviewer returned it as not for the advertised model.
The HouYeen Focus meter has the largest review file in this set, 3.8 from 104 reviews, at £22.99 and 70 g, and the box line says one remanufactured sensor for OE 7M51-12B579-BB. Reviewers describe a plug-and-play fit, a code deleted, a 2014 Kuga Mk2 that worked, and one car whose live data looked normal afterwards. Other buyers say the part did not match the pictures, the fault code stayed, and the readings made no sense, after which they ordered a Bosch unit they priced at about £80 or more. Short life shows up as a few days, about a month, or about six weeks before judder or the management light returned. One review says it is not compatible with a C-MAX 1.5 TDCi. It is not the 6C11 Transit sensor, and the listing states neither a pin count nor a warranty.
Pros
Cons
Best for: A Focus MK2 or MK3, C-MAX or Kuga I whose old sensor reads 7M51-12B579-BB and where a remanufactured insert is acceptable.
Less suitable: A C-MAX 1.5 TDCi, a 6C11 Transit, or a buyer who wants a new sensor with a printed warranty.
Specifications
Common questions
Is this sensor new?
The listing says the box contains one remanufactured mass air flow meter sensor.
Which OE number should you match?
7M51-12B579-BB, also written 7M5112B579BB, plus the cross-references printed on the listing such as 1480570.
Does the title cover every C-MAX?
The fitment lines name specific Focus, C-MAX, Kuga and Volvo engines. A review says it is not compatible with a C-MAX 1.5 TDCi. Match the engine, not only the model name.
The PEIUOK eight-pin meter is the dearest listing here at £49.89, a 60 g plug-mount analogue insert for OE 0280218419, rated 3.7 from seven reviews, with a 13-month seller warranty. The seller states accuracy of 2% or better, and that figure is not a UK lab result. Two UK reviews in the file say the unit did not read correctly. One showed a mixture that was too rich within about five minutes. Another produced a different fault and was returned, and that reviewer said a third unit was then fine. Fast delivery and a return accepted without fuss are the positive notes. It is not interchangeable with the 5-pin Frankberg or TUCKBOLD units, even where a title mentions Astra or Cruze. A rank of 21 in Car Air Mass Sensors does not outweigh those two written faults.
Pros
Cons
Best for: An Astra, Corsa, Mokka or Cruze whose old meter is the 8-pin 0280218419 plug, if you will use the 13-month warranty promptly.
Less suitable: A 5-pin Astra or Cruze sensor, or a buyer choosing it because it is the dearest listing.
Specifications
Common questions
Can it be used on a Vauxhall?
The listing names Adam, Astra Mk V to Mk VII, Corsa Mk III, Meriva, Mokka and Zafira, plus Chevrolet Cruze, Aveo and Trax. It is an 8-pin plug-mount part, OE 0280218419.
What accuracy does the seller state?
2% or better. That figure is the seller's claim on the listing, not a published UK lab test.
What did UK reviewers write?
Two UK reviews are in the file. One unit showed a rich mixture within about five minutes. The other caused a different fault and was returned. The average is 3.7 from 7 reviews.
The Amrxuts Jaguar meter is £35 and 140 g, flange mounted, model 197408-0011, and rated 3.4 from four reviews. The file has that average and no review bodies, so there is no UK sentence about a light going out or a quick return. An included-components line says five pins, which is a listing phrase rather than a count you can see confirmed in a review. The cross-list is long and includes 1X43 numbers as well as 2W93 suffixes. The seller invites a VIN check if you are unsure. At £35, with four ratings and no written reviews, the purchase only makes sense when 197408-0011 is the number on the sensor you removed.
Pros
Cons
Best for: A listed Jaguar whose old meter reads 197408-0011, after a VIN check if the suffix is unclear.
Less suitable: A Ford insert, or a purchase made from a neighbouring number such as 1X43-12B579-AB on the same cross-list.
Specifications
Common questions
Which Jaguars are listed?
S-Type, X-Type, XF, XJ and XK, with engine codes such as AJ-V6 and AJ-V8 printed year by year. The seller invites a VIN check if you are unsure.
Does the page claim better fuel economy?
The listing asks the question and does not give a measured figure. This comparison does not claim a fuel-economy percentage.
How many reviews support the score?
3.4 out of 5 from 4 reviews. The file has no review text.
The PEIUOK BMW and Mini meter is listed at £24.89 and 80 g against OE 13628506408 and 0281006092, with a one-year seller warranty. The captured page ranked it 7 in Car Air Mass Sensors. The star line is 1.8 from three reviews, the weakest average in this set. Both UK reviews in the file say the part did not fix the fault. One buyer then paid for an OEM part that did, and the other said further codes appeared. The listing asks you to check Amazon Garage, and the material line is ABS plastic. A high category rank and a low shelf price do not outweigh two written failures on a sample of three.
Pros
Cons
Best for: A listed BMW F-series or Mini whose old number is 13628506408, only if you are prepared to return it quickly.
Less suitable: Anyone treating the category rank or the £24.89 price as evidence the fault will clear.
Specifications
Common questions
Will this fit a BMW 3 Series?
The listing names 3 Series F30, F80, F31 and F34 among other F-chassis cars, against OE 13628506408 and 0281006092. Confirm with the number on the car or Amazon Garage, as the seller asks.
What is it made of?
The listing says ABS plastic and gives a weight of 80 g.
What do the written reviews say?
Both UK reviews in the file say the part did not fix the fault. One buyer then fitted an OEM part. The listing average is 1.8 from 3 reviews.
The GELGP listing is a 400 g assembly, 18 × 8 × 5 cm, at £47.99 for Mokka and Mokka X 1.4 turbo petrol, Trax 1.4 turbo and Astra J 1.4 turbo, against OE 0280218432. The seller calls it brand new aftermarket and offers a one-year replacement if there is a quality issue. There is no customer-review line, so nobody in the file describes whether the lamp went out. It is the heavy end of this set: a 60 g HouYeen insert is a different shape of part. Pin count and output type are n/a. The manufacturer field on the listing reads Gupo, while the brand on the page is GELGP. You would order it only when the old housing matches 0280218432 and you accept a listing with no UK review text.
Pros
Cons
Best for: A Mokka, Mokka X, Trax or Astra J 1.4 turbo whose old assembly reads 0280218432.
Less suitable: A 60 g plug-in insert, an 8-pin 0280218419 meter, or a diesel Astra.
Specifications
Common questions
Which engines is it listed for?
Mokka and Mokka X J13 1.4 turbo petrol, Chevrolet Trax and Tracker 1.4 turbo petrol, and Astra J P10 1.4 turbo petrol, years as printed, OE 0280218432 and 0280218431.
Is it an insert or a larger assembly?
The listing weight is 400 g and the dimensions are 18 × 8 × 5 cm, which is the heavy end of this comparison.
Is there a review score?
No customer-review line in the file. The seller describes it as brand new with a one-year replacement offer.
The JETPROP listing is £29.99 and 145 g, with model number 8V2112B579AA and a one-year seller warranty. The file has no customer-review line, so there is no star average and no owner describing a cure or a failure. The printed numbers include both 8V21-12B579-AA and 6C11-12B579-AA, which are different Ford families in this comparison. Output type, pin count and new-versus-remanufactured are n/a. The fitment text names Transit, Mondeo, Ranger, Discovery and several Volvos without engine codes. At about £10 more than the HouYeen 8V21 unit that has 59 reviews, you are paying for a warranty sentence and a mixed number list.
Pros
Cons
Best for: A last look only when the old sensor is exactly 8V21-12B579-AA and you want the stated one-year warranty.
Less suitable: A 6C11 car, or any order based on the full cross-list rather than one number.
Specifications
Common questions
Which OE numbers are printed?
8V21-12B579-AA, LR019830, AFH70M-83, 6C11-12B579-AA, 1516668 and further numbers on the listing. The cross-list includes more than one Ford suffix, so match your old part.
Is there a star rating?
The listing has no customer-review line, so the rating is n/a.
What warranty does the seller state?
A 1-year warranty, with an invitation to contact the seller.
Eleven mass air flow sensors on amazon.co.uk were scored from the listings and review notes checked on 19 October 2026. There is no laboratory airflow test. A star average on one to five reviews does not outrank a larger UK sample that includes both cures and early failures. A 4.8 from five ratings is weaker evidence than a 4.2 from 98. A one-year or 13-month seller warranty is noted, and it does not replace a review sample. No ASIN is scored as a Bosch or dealer part, and none is scored as an MOT pass.
Review evidence
40%The amazon.co.uk star line is scaled down when fewer than about 30 reviews sit behind it. One review at 5.0 does not outrank 98 reviews at 4.2. A listing with no customer-review line scores below every rated listing.
One OE family
25%The listing should name one OE family, including the suffix. Mixing 6C11-12B579-AA and 8V21-12B579-AA on one page, or a model list that runs from Jaguar to Toyota, is a deduction.
Price against evidence
20%Shelf price is scored against the review file, not on its own. About £17.99 with 98 reviews scores above about £49.89 with seven reviews and two written faults.
Listing honesty
15%Points come off for early failure, a return as the wrong model, a seller accuracy figure with no UK lab, a measuring range marked Predicted, or a remanufactured box line paired with short-life comments.
Match the OE number and the suffix first, then the pin count and the housing, then the UK review file. Price comes after those three. The notes below follow that order for these 11 amazon.co.uk listings. None of the scores is a laboratory airflow test.
A mass air flow sensor tells the engine computer how much air is entering so it can set fuel and, on many diesels, exhaust-gas recirculation. UK buyers are usually chasing a flat spot, a rough idle, smoke or a warning light after a code such as P0100 or P0101. The part has to match the old sensor's number, pins and housing. Eleven complete sensors are on this page, from about £17.99 to about £49.89. A wiring plug at about £8.79 was left out because it is not the sensor.
Mondeo and Transit appear on both the 6C11 and the 8V21 HouYeen listings. Those suffixes are different Ford families. Read the number on the sensor you removed, including the letters after the hyphen.
Frankberg and the TUCKBOLD Cruze unit are listed as 5-pin. The PEIUOK Vauxhall and Chevrolet unit is listed as 8-pin. An Astra or Cruze in both titles does not make the plugs interchangeable.
A wiring plug is not the meter, which is why the £8.79 plug was left out of this set. A model list that runs past the printed OE numbers, including Mazda and Toyota on the Frankberg page, is not a fitment guarantee.
Read the OE number, including the suffix, from the old sensor or from a catalogue for that registration. In this set, 6C11-12B579-AA, 7M51-12B579-BB and 8V21-12B579-AA are different Ford families, not three names for one part. The HouYeen 6C11 listing at about £17.99 is the top pick because 98 reviews sit on that one suffix, not because the title also says Mondeo or Transit. The HouYeen 8V21 at about £19.99 is the best value only when the old part is 8V21-12B579-AA.
Pin count and plug shape come next. Frankberg is listed as 5-pin, 12 V and 70 g, against 1X43-12B579-AB. The TUCKBOLD Cruze assembly is also 5-pin, at 210 g, OE 55561912, and the listing says it is non-OEM. The PEIUOK Vauxhall and Chevrolet meter is the only 8-pin listing, a 60 g plug-mount analogue insert for 0280218419 at about £49.89. An Astra or Cruze title does not make a 5-pin and an 8-pin the same part. Then separate an insert from a housing. Weights in this set run from 58 g to 400 g.
Three typical situations, each with a recommendation from this comparison.
You already have a code on an older Transit MK7, Galaxy, S-MAX, Mondeo MK4 diesel, Boxer or Relay, and the sensor you removed reads 6C11-12B579-AA. The HouYeen 6C11 insert is about £17.99, with 4.2 from 98 reviews. The file still includes early limp mode and a returned code.
The old suffix is 8V21-12B579-AA, on a later Fiesta, Transit MK8, Ranger, Evoque or 2011-on Relay. The HouYeen 8V21 meter is about £19.99 and 3.9 from 59 reviews. It is a different part from the 6C11 listing, even where both titles say Mondeo or Transit.
You need the 8-pin plug for OE 0280218419, not a 5-pin Astra or Cruze title. The PEIUOK listing is about £49.89, 3.7 from 7 reviews, with a 13-month seller warranty. Two UK reviews describe a wrong reading. A star line under ten reviews is thin evidence.
In this set of 11 amazon.co.uk listings, the top pick is the HouYeen 6C11 MAF at about £17.99. It is a 58 g digital flange insert for OE 6C11-12B579-AA, rated 4.2 from 98 reviews, and the file still includes limp mode, a returned Transit P1103 and a Mondeo 2.0 diesel mismatch. The best value is the HouYeen 8V21 MAF at about £19.99, 3.9 from 59 reviews, for the later suffix 8V21-12B579-AA. A P0103 after a cure and a failure under 500 miles stay in that file. The other nine have no award. None of these scores is a Bosch part, a dealer part, or an MOT pass.
HouYeen 8V21 MAF
About £19.99 for the later Ford number 8V21-12B579-AA, with 3.9 from 59 reviews. It is a different suffix from the top pick.
Editorial
Kevin B. is the editor for Cars & motoring at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources from the research digest, last checked on 19 October 2026. Shelf prices and star lines are the amazon.co.uk figures in the display file. The price bands are this set, not a market average.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the UK listings checked on 19 October 2026. We did not lab-test these mass air flow sensors.
