Coolant Temperature Sensors for BMW 8 Series E31 (1991-1997)

Clear BMW chassis

Please ensure your correct model is selected

Coolant temperature sensors are vital to your cooling system. If you're running a stock cooling system, a non-functional coolant temperature sensor can prevent your fan from flipping on or give you an inaccurate temp reading, preventing you from knowing when your vehicle is running hot. This can be a huge issue in particular if you're tracking your vehicle. Replace yours today!
Sort By:

Coolant Temperature Sensor - M52/S52, M62, M73, M54, S62
Located on water pump housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:7257
Part#: 13621703993
In Stock
8% off MSRP $ 32.14

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

$ 29.49 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 32.14

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

$ 29.49 USD
Free Shipping on orders $49 and up
This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer.

This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement.

This coolant temp sensor fits the following BMWs:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3, located in cylinder head
1999-2003 E39 BMW 540i, located on side of water pump
1999-2001 E38 BMW 740i 740il, located on side of water pump
1995-1996 E38 BMW 750il, located on side of water pump
1990-1999 E31 BMW 850i 850ci, located on side of water pump
2000-2006 E53 BMW X5 3.0i, located in cylinder head
2000-2006 E53 BMW X5 4.4i/4.6is/4.8is, located on side of water pump
1997-2002 Z3 BMW Z3 2.5i Z3 3.0i, located in cylinder head
Show More Show Less
Race German Coolant Temperature Sender Adapter - M12x1.5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Race German - Corporate Logo
T#:6827887
Part#: RGCTSAM12
In Stock
$ 35.99 USD
Free Shipping on orders $49 and up
Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for M12x1.5 sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor
Show More Show Less
Facet Radiator Fan Switch - E24, E28, E30, E31, E32, E34, E36, Z3 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Facet - Corporate Logo
T#:375144
Part#: 61311378073
Ships in 2 Business Days
$ 44.99 USD
Free Shipping on orders $49 and up
$ 44.99 USD
Free Shipping on orders $49 and up
Measures radiator air temperature enabling the fan to turn off or on

Race German Coolant Temperature Sender Adapter - 1/8NPT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Race German - Corporate Logo
T#:6827888
Part#: RGCTSA1/8NPT
Ships in 4 Business Days
$ 35.99 USD
Free Shipping on orders $49 and up
Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for 1/8NPT sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor
Show More Show Less

Genuine BMW Coolant Level Sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:360966
Part#: 61318360876
In Stock
3% off MSRP $ 92.99

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

$ 89.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 92.99

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

$ 89.99 USD
Free Shipping on orders $49 and up
Coolant Temperature Sensor
Located on the water pump housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Meistersatz - Corporate Logo
T#:379617
Part#: 13621703993
In Stock
$ 25.99

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

$ 21.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 25.99

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

$ 21.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

Genuine BMW Water Temperature Sensor
Located in the water accumilator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:367810
Part#: 12621288158
Ships in 3 Business Days
6% off MSRP $ 82.99

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

$ 77.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 82.99

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

$ 77.99 USD
Free Shipping on orders $49 and up
Genuine BMW Coolant Temperature Sensor - E31 850Ci 850CSi E32 750iL ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:42618
Part#: 13621707366
Special Order: No Guaranteed ETA
7% off MSRP $ 240.99

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

$ 224.99 USD
Free Shipping
7% off MSRP
$ 240.99

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

$ 224.99 USD
Free Shipping


Genuine BMW Temperature Sensor, Water - 3-Pol-2500-Ohm

Fits BMW Engines including:
M70,S70


Coolant Temperature Sensor - E36, E34, E32, E38, E31
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
FAE - Corporate Logo
T#:7172
Part#: 12621747281
In Stock
$ 13.99 USD
Free Shipping
$ 13.99 USD
Free Shipping
This is the engine coolant temperature sensor that is mounted into the cylinder head.

URO Coolant Temperature Sensor - BMW M44 M52 M62 M73 M54 S62 S50 S52 ...
Located on the water pump housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:639497
Part#: 13621703993
In Stock
$ 12.99 USD
Free Shipping on orders $49 and up
$ 12.99 USD
Free Shipping on orders $49 and up
URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts. 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!
Show More Show Less
Bav Auto Coolant Temperature Sensor - M52/S52, M62, M73, M54, S62 ...
Located on water pump housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bavarian Autosport - Corporate Logo
T#:639828
Part#: 13621703993
In Stock
Sale - Save 20% $ 20.99

This product was last offered at the strikethrough price on
05-03-2026

$ 16.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 20.99

This product was last offered at the strikethrough price on
05-03-2026

$ 16.79 USD
Free Shipping on orders $49 and up
This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
Show More Show Less
Coolant Temperature Sender
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Facet - Corporate Logo
T#:586992
Part#: 12621747281
In Stock
$ 23.99

This product was last offered at the strikethrough price on
05-03-2026

$ 19.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 23.99

This product was last offered at the strikethrough price on
05-03-2026

$ 19.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up


FAE Coolant Temperature Sensor - E31, E36, E38, E39, E52, E53, Z3 ...
Located on the water pump housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
FAE - Corporate Logo
T#:374002
Part#: 13621703993
In Stock
$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
Free Shipping on orders $49 and up
Monitors coolant temperature
Water Temperature Sensor
Located in the water accumilator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:372926
Part#: 12621288158
Ships in 2 Business Days
$ 6.99 USD
Free Shipping on orders $49 and up
$ 6.99 USD
Free Shipping on orders $49 and up
Replace the sensor to get your gauge working properly again.
Coolant Temperature Sender - 2 Pin
Located in the water accumulator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Meistersatz - Corporate Logo
T#:379619
Part#: 12621747281
Ships in 4 Business Days
$ 8.99 USD
Free Shipping on orders $49 and up
$ 8.99 USD
Free Shipping on orders $49 and up

Meistersatz Water Temperature Sensor - E31, E32, E34, E38
Located in the water accumilator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Meistersatz - Corporate Logo
T#:379615
Part#: 12621288158
Ships in 4 Business Days
$ 7.99 USD
Free Shipping on orders $49 and up
$ 7.99 USD
Free Shipping on orders $49 and up
M14x1.5 Thread

Water Temperature Sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Beru - Corporate Logo
T#:596874
Part#: 12621288158
Ships in 1-2 days
$ 44.99 USD
Free Shipping on orders $49 and up
$ 44.99 USD
Free Shipping on orders $49 and up
M14x1.5 Thread. Your vehicle is equipped with numerous gauges to allow you to have a better idea of what is going on under the hood. By monitoring these gauges, you can prevent premature engine damage due to low oil pressure or high coolant temperatures. If one isn't functional though, you are in the dark as far as that system goes. One of the most vital is coolant temperature. Replace the sensor to get your gauge working properly again.
Show More Show Less
Hella Coolant Temperature Sender - E31, E32, E34, E36, E38
Located in the water accumulator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Hella - Corporate Logo
T#:580139
Part#: 9107471
Ships in 4 Business Days
$ 15.99 USD
Free Shipping on orders $49 and up
$ 15.99 USD
Free Shipping on orders $49 and up
2 pin

FAE Water Temperature Sensor - E31, E32, E34, E38
Located in the water accumilator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
FAE - Corporate Logo
T#:7171
Part#: 12621288158
Ships on Jun 29, 2026
$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
Free Shipping on orders $49 and up
ENGINE ELECTRICAL TEMPERATURE SENSOR, WATER 12621288158
Coolant Level Sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:594511
Part#: 61318360876
Special Order: No Guaranteed ETA
$ 27.99 USD
Free Shipping on orders $49 and up
Monitors the coolant level in the expansion tank. This sensor is critical in keeping tabs of your cooling systems health.

Coolant Temperature Sensor
Located on water pump housing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:594615
Part#: 13621703993
Special Order: No Guaranteed ETA
$ 18.99 USD
Free Shipping on orders $49 and up
$ 18.99 USD
Free Shipping on orders $49 and up
This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer.

This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement.

This coolant temp sensor fits the following BMWs:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3, located in cylinder head
1999-2003 E39 BMW 540i, located on side of water pump
1999-2001 E38 BMW 740i 740il, located on side of water pump
1995-1996 E38 BMW 750il, located on side of water pump
1990-1999 E31 BMW 850i 850ci, located on side of water pump
2000-2006 E53 BMW X5 3.0i, located in cylinder head
2000-2006 E53 BMW X5 4.4i/4.6is/4.8is, located on side of water pump
1997-2002 Z3 BMW Z3 2.5i Z3 3.0i, located in cylinder head
Show More Show Less

Febi Coolant Temperature Sender - E31, E32, E34, E36, E38
Located in the water accumulator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:382428
Part#: 12621747281
Special Order: No Guaranteed ETA
$ 20.99 USD
Free Shipping on orders $49 and up
$ 20.99 USD
Free Shipping on orders $49 and up
2 pin