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BMW E34 Engine Sensors

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7/8"(22mm) Flexible Oxygen Sensor Wrench

ES#240942 - FO-78 - 7/8"(22mm) Flexible Oxygen Sensor Wrench - The proper tool to remove difficult-to-reach oxygen sensors - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

The proper tool to remove difficult-to-reach oxygen sensors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
240942
Mfg#:
FO-78
Ships on Jun 23, 2026
Auto Notify
ON SALE! SAVE 30%
$48.99

This product was last offered at the strikethrough price on
05-02-2026

$34.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

O-Ring Seal

ES#28515 - 12141748398 - O-Ring Seal - Always replace the o-ring when replacing sensor - Genuine BMW - BMW MINI

Always replace the o-ring when replacing sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
28515
Mfg#:
12141748398
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Knock Sensor

ES#28430 - 12141738667 - Knock Sensor - Controls the timing and air/fuel mixture of your engine - Genuine BMW - BMW

Controls the timing and air/fuel mixture of your engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
28430
Mfg#:
12141738667
Ships in 1-2 days
6% off MSRP

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

$235.99

This product was last offered at the strikethrough price on
06-03-2026

$220.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Pressure Switch - M12x1.5

ES#2683652 - 12618611273 - Oil Pressure Switch - M12x1.5 - Leaking or malfunctioning oil pressure switches can be disastrous - Genuine BMW - BMW

Leaking or malfunctioning oil pressure switches can be disastrous affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2683652
Mfg#:
12618611273
In Stock
17% off MSRP

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

$34.59

This product was last offered at the strikethrough price on
06-04-2026

$28.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mass Air Flow Sensor (MAF)

ES#3979144 - 13621702078 - Mass Air Flow Sensor (MAF) - Controls the air / fuel mixture of the engine, usually deteriorates over time affecting engine performance - Bremi - BMW
ECS Tuning recommends this product.

Controls the air / fuel mixture of the engine, usually deteriorates over time affecting engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Bremi - Corporate Logo
ES#:
3979144
Mfg#:
13621702078
Ships in 4 Business Days
$193.99

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

$188.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor - M50 S50

ES#2706946 - 12141726065 - Crankshaft Position Sensor - M50 S50 - Having a crank but no starting issue? This sensor is often the culprit - Genuine BMW - BMW

Having a crank but no starting issue? This sensor is often the culprit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2706946
Mfg#:
12141726065
Ships in 1-2 days
4% off MSRP

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

$249.99

This product was last offered at the strikethrough price on
06-04-2026

$240.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Throttle Position Sensor

ES#3660593 - 13631710559 - Throttle Position Sensor - Restore driveability - Facet - BMW

Restore driveability affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Facet - Corporate Logo
ES#:
3660593
Mfg#:
13631710559
Ships in 3 Business Days
$89.99

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

$86.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3/8"/9mm Band Hose Clamp - 90-110mm

ES#2730259 - 003402ECS06A-13 - 3/8"/9mm Band Hose Clamp - 90-110mm - German-style 304 stainless hose clamp - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

German-style 304 stainless hose clamp affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2730259
Mfg#:
003402ECS06A-13
In Stock
ON SALE! SAVE 40%
$6.99

This product was last offered at the strikethrough price on
05-02-2026

$4.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Level Sensor

ES#31837 - 12611704468 - Oil Level Sensor - 87mm. Located in the oil pan - Genuine BMW - BMW

87mm. Located in the oil pan affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
31837
Mfg#:
12611704468
Ships in 5 Business Days
6% off MSRP

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

$349.99

This product was last offered at the strikethrough price on
06-04-2026

$327.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Mass Air Flow Sensor

ES#2586680 - 13627547981COKT - Remanufactured Mass Air Flow Sensor - Includes $50 core charge - Genuine BMW - BMW

Includes $50 core charge affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2586680
Mfg#:
13627547981COKT
Ships in 8 Business Days
$1199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor

ES#3023831 - 12141726066 - Crankshaft Position Sensor - Having a crank but no starting issue? This sensor is often the culprit - Hella - BMW

Having a crank but no starting issue? This sensor is often the culprit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hella - Corporate Logo
ES#:
3023831
Mfg#:
12141726066
In Stock
$117.99

This product was last offered at the strikethrough price on
01-05-2026

$96.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor - Bavarian Autosport

ES#3673342 - 52380 - Crankshaft Position Sensor - Bavarian Autosport - A bad crank position sensor will commonly cause a no-start situation. - Bavarian Autosport - BMW

A bad crank position sensor will commonly cause a no-start situation. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For model year 1991-1995

Brand:
Bavarian Autosport - Corporate Logo
ES#:
3673342
Mfg#:
52380
In Stock
ON SALE! SAVE 20%
$48.99

This product was last offered at the strikethrough price on
05-02-2026

$39.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor

ES#4871938 - 12141720856 - Crankshaft Position Sensor - Bremmen Parts - BMW

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4871938
Mfg#:
12141720856
In Stock
ON SALE! SAVE 20%
$42.99

This product was last offered at the strikethrough price on
05-02-2026

$34.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft position sensor

ES#2706799 - 12141720856 - Crankshaft position sensor - Having a crank but no starting issue? This sensor is often the culprit - Genuine BMW - BMW

Having a crank but no starting issue? This sensor is often the culprit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2706799
Mfg#:
12141720856
Ships in 1-2 days
6% off MSRP

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

$217.99

This product was last offered at the strikethrough price on
06-04-2026

$203.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

OIL PRESSURE SWITCH

ES#2801445 - 12618611273 - OIL PRESSURE SWITCH - Replacement oil pressure switch found on most BMWs - Rein - BMW

Replacement oil pressure switch found on most BMWs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801445
Mfg#:
12618611273
In Stock
$11.99

This product was last offered at the strikethrough price on
04-20-2026

$7.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mass Air Flow Sensor (MAF)

ES#34345 - 13621702078 - Mass Air Flow Sensor (MAF) - Controls the air / fuel mixture of the engine, usually deteriorates over time affecting engine performance - Genuine BMW - BMW

Controls the air / fuel mixture of the engine, usually deteriorates over time affecting engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
34345
Mfg#:
13621702078
Ships in 1-2 days
5% off MSRP

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

$767.99

This product was last offered at the strikethrough price on
06-04-2026

$728.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Sensors

Random check engine light got you down? It's probably a bad sensor! We have all the electrical sensors your engine needs to send information to your ECU so everything stays happy. Find it, fix it, and replace it with our OEM sensors or save some money with quality aftermarket sensors.

Let us help you find the parts that fit your BMW

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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