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Audi B5 A4 FWD 1.8T

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Audi B5 A4 FWD 1.8T Engine Cooling Temperature Sensors

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Coolant Temperature Sensor - 2 Pin

ES#3970965 - 025906041A - Coolant Temperature Sensor - 2 Pin - Blue sensor used by the ECU to control engine fueling - Meyle - Audi Volkswagen

Blue sensor used by the ECU to control engine fueling 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
From VIN 8D-W-007800 up to VIN 8D-X-199999, splits are in the 1998/1999 model years

Brand:
Meyle - Corporate Logo
ES#:
3970965
Mfg#:
025906041A
Ships on Sep 28, 2026
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

HOLDING CLIP

2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801984
Mfg#:
32121142
Ships in 4 Business Days
ON SALE! SAVE 22%
$4.99

This product was last offered at the strikethrough price on
08-31-2026

$3.87 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor With O-Ring & Clip - 4 Pin

ES#2762348 - 059919501KT3 - Coolant Temperature Sensor With O-Ring & Clip - 4 Pin - Blue sensor with square connector. Please check existing sensor color - URO - Audi

<font color='blue'>Blue</font> sensor with square connector. Please check existing sensor color 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Up to VIN 8D-X-500000, split is in the 1999 model year

Brand:
URO - Corporate Logo
ES#:
2762348
Mfg#:
059919501KT3
Ships in 2 Business Days
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch (91-102°C) - 3 Pin

ES#4872634 - 191959481A - Auxiliary Fan Switch (91-102C) - 3 Pin - Located on the lower side of the radiator - Vemo - Audi Volkswagen

Located on the lower side of the radiator

Brand:
Vemo - Corporate Logo
ES#:
4872634
Mfg#:
191959481A
Ships in 2 Business Days
$16.75 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor - 2 Pin

Blue sensor used by the ECU to control engine fueling

Brand:
MTC - Corporate Logo
ES#:
2090796
Mfg#:
025906041
Ships in 10 Business Days
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5340675
Mfg#:
N90316802
Special Order: No Guaranteed ETA
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor - 4 Pin

<font color='blue'>Blue</font> sensor with square connector. Please check existing sensor color - 078919501B Up to VIN 8D-X-500000, split is in the 1999 model year

Brand:
Refak - Corporate Logo
ES#:
3143185
Mfg#:
078919501B
Special Order: No Guaranteed ETA
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch (87-93°C) - 3 Pin

ES#3625382 - 251959481K - Auxiliary Fan Switch (87-93C) - 3 Pin - Located on the lower side of the radiator, comes with paper gasket - FAE - Audi Volkswagen

Located on the lower side of the radiator, comes with paper gasket

Brand:
FAE - Corporate Logo
ES#:
3625382
Mfg#:
251959481K
Back Ordered
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Cooling Temperature Sensors

A faulty temperature sensor can be a source of overheating problems and cooling leaks. Replace your temperature sensor with an OEM temperature sensor or aftermarket temperature sensor from our trusted list of manufacturers to bring your cooling system back up to par.

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