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BMW E24 635CSi M30 3.4L

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BMW E24 635CSi M30 3.4L 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 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Schwaben - Corporate Logo
ES#:
240942
Mfg#:
FO-78
Ships on Dec 1, 2026
ON SALE! SAVE 25%
$49.99

This product was last offered at the strikethrough price on
11-07-2026

$37.49 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

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

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

Brand:
Genuine BMW - Corporate Logo
ES#:
2683652
Mfg#:
12618611273
In Stock
19% 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
10-07-2026

$27.87 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Innovate LC-2 Wideband O2 Controller Kit

ES#4809696 - 38770 - Innovate LC-2 Wideband O2 Controller Kit - Includes Lambda cable & 8-foot sensor cable. - Innovate Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Includes Lambda cable & 8-foot sensor cable.

Brand:
Innovate Motorsports - Corporate Logo
ES#:
4809696
Mfg#:
38770
In Stock at Vendor
$247.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

2 Pin Connector

ES#4772597 - 61132359999 - 2 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. - ECS - BMW MINI

Includes connector housing with terminals and seals. Commonly used for the coolant level sensor. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4772597
Mfg#:
61132359999
In Stock
ON SALE! SAVE 30%
$10.99

This product was last offered at the strikethrough price on
11-07-2026

$7.69 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor

ES#31182 - 12521287784 - Crankshaft Position Sensor - Measures the speed and position of your engine's crankshaft. - Genuine BMW - BMW

Measures the speed and position of your engine's crankshaft.

Brand:
Genuine BMW - Corporate Logo
ES#:
31182
Mfg#:
12521287784
In Stock
6% off MSRP

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

$299.99

This product was last offered at the strikethrough price on
11-08-2026

$282.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Level Sensor

ES#31829 - 12611312343 - Oil Level Sensor - Located on the bottom of the oil pan - Genuine BMW - BMW

Located on the bottom of the oil pan

Brand:
Genuine BMW - Corporate Logo
ES#:
31829
Mfg#:
12611312343
Ships in 1 day
6% off MSRP

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

$414.99

This product was last offered at the strikethrough price on
11-08-2026

$390.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Race German Coolant Temperature Sender Adapter - 1/8NPT

ES#4493067 - RGCTSA1/8NPT - Race German Coolant Temperature Sender Adapter - 1/8NPT - Splice into your cooling system to add an aftermarket coolant temperature sensor and gauge! - Race German - BMW

Splice into your cooling system to add an aftermarket coolant temperature sensor and gauge!

Brand:
Race German - Corporate Logo
ES#:
4493067
Mfg#:
RGCTSA1/8NPT
In Stock
Limited Qty Sale
$35.99

This product was last offered at the strikethrough price on
11-07-2026

$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Position Sensor - Priced Each

ES#2756056 - 12141730773 - Camshaft Position Sensor - Priced Each - Monitors camshaft location - Genuine BMW - BMW

Monitors camshaft location

Brand:
Genuine BMW - Corporate Logo
ES#:
2756056
Mfg#:
12141730773
Ships in 1 day
5% off MSRP

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

$240.00

This product was last offered at the strikethrough price on
11-08-2026

$226.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Precision Raceworks Ethanol Sensor Breakout Harness

ES#4858864 - 201-0411 - Precision Raceworks Ethanol Sensor Breakout Harness - This breakout harness isolates the signal wire from your flex fuel sensor, allowing an external gauge to access the signal without modifying your existing flex fuel harness. - Precision Raceworks - Audi BMW Volkswagen

This breakout harness isolates the signal wire from your flex fuel sensor, allowing an external gauge to access the signal without modifying your existing flex fuel harness.

Brand:
Precision Raceworks - Corporate Logo
ES#:
4858864
Mfg#:
201-0411
In Stock
$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

throttle position sensor

ES#34484 - 13631273265 - throttle position sensor - Found on the throttle housing - Genuine BMW - BMW

Found on the throttle housing

Brand:
Genuine BMW - Corporate Logo
ES#:
34484
Mfg#:
13631273265
Ships in 1 day
6% off MSRP

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

$381.99

This product was last offered at the strikethrough price on
11-08-2026

$359.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ABS Wheel Speed Sensor with Wire Harness

ES#62995 - 34521155710 - ABS Wheel Speed Sensor with Wire Harness - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
62995
Mfg#:
34521155710
Ships in 4 Business Days
3% off MSRP

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

$361.99

This product was last offered at the strikethrough price on
11-08-2026

$350.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Position Sensor Pair

ES#5396381 - 12141730773KT - Camshaft Position Sensor Pair - Monitors camshaft location - Hamburg Tech - BMW

Monitors camshaft location

Brand:
Hamburg Tech - Corporate Logo
ES#:
5396381
Mfg#:
12141730773KT
In Stock
$100.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#2682192 - 13621709967 - Coolant Temperature Sensor - Typically located in the thermostat housing or radiator hose - Genuine BMW - BMW

Typically located in the thermostat housing or radiator hose

Brand:
Genuine BMW - Corporate Logo
ES#:
2682192
Mfg#:
13621709967
Ships in 1 day
6% off MSRP

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

$82.99

This product was last offered at the strikethrough price on
11-08-2026

$77.99 USD
Free Shipping
on orders $49 and up
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.

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Manufacturer names and/or part numbers are used only for identification purposes.

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