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Audi B5 S4 2.7T

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Audi B5 S4 2.7T Engine Sensors

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Sensor Retaining Clip - Priced Each

ES#2865558 - 025121142 - Sensor Retaining Clip - Priced Each - Secures the coolant temperature sensor in place - Febi - Audi Volkswagen

Secures the coolant temperature sensor in place affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2865558
Mfg#:
025121142
Ships on Jul 21, 2026
Auto Notify
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#4940095 - 032121142 - Sensor Retaining Clip - Priced Each - Used for ECS 2.0T boost taps - Bremmen Parts - Audi Volkswagen

Used for ECS 2.0T boost taps affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940095
Mfg#:
032121142
In Stock
ON SALE! SAVE 59%
$1.99

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

$0.81 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#2586934 - 032121142 - Sensor Retaining Clip - Priced Each - Secures the coolant temperature sensor in place - Rein - Audi Volkswagen

Secures the coolant temperature sensor in place affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2586934
Mfg#:
032121142
Ships in 1-2 days
ON SALE!
$4.07

This product was last offered at the strikethrough price on
06-29-2026

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

Crankshaft Position Sensor

ES#3190125 - 907-764 - Crankshaft Position Sensor - Also known as the RPM or speed sensor - Dorman - Audi Volkswagen

Also known as the RPM or speed sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Manual transmission models

Brand:
Dorman - Corporate Logo
ES#:
3190125
Mfg#:
907-764
Ships in 4 Business Days
$76.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor

ES#3521742 - 078906433F - Crankshaft Position Sensor - Also know as the RPM Reference sensor or Impulse Sender - Holstein - Audi

Also know as the RPM Reference sensor or Impulse Sender affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Automatic transmission models

Brand:
Holstein - Corporate Logo
ES#:
3521742
Mfg#:
078906433F
Ships in 1 Business Day
$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Air Temperature Sensor

ES#2894741 - 058905379 - Air Temperature Sensor - Measures the temperature of the air entering the engine - Vemo - Audi Volkswagen Porsche

Measures the temperature of the air entering the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2894741
Mfg#:
058905379
In Stock at Vendor
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

A/C Pressure Safety Switch

Prevents excess pressure from building within the system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Four Seasons - Corporate Logo
ES#:
4142139
Mfg#:
8D0959482B
In Stock at Vendor
$175.99

This product was last offered at the strikethrough price on
01-17-2026

$165.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Position Sensor

Also know as the RPM reference sensor or impulse sender affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Automatic transmission models

Brand:
SMP - Corporate Logo
ES#:
4158584
Mfg#:
078906433F
In Stock at Vendor
$53.99

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

$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pressure Switch - Black

Senses engine oil pressure for the ECU and warning light. 1.2-1.6 BAR affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
URO - Corporate Logo
ES#:
5457350
Mfg#:
06A919081A
Ships in 1 Business Day
$5.99 USD

Oxygen Sensor - Priced Each

Keep your engine running efficiently affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits left and right rear position

Brand:
Walker - Corporate Logo
ES#:
3551566
Mfg#:
1K0998262AB
Ships in 1-2 days
$142.99

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

$138.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary 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

Crankshaft Position Sensor

ES#2681201 - 06A906433C - Crankshaft Position Sensor - Also known as the RPM or speed sensor. - Vemo - Audi Volkswagen

Also known as the RPM or speed sensor. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Manual transmission models

Brand:
Vemo - Corporate Logo
ES#:
2681201
Mfg#:
06A906433C
Special Order: No Guaranteed ETA
$38.99 USD
Free Shipping
on orders $49 and up

Thermal Switch - 2 Pin

ES#2898409 - 357919369F - Thermal Switch - 2 Pin - Located in the coolant pipe that connects to the cylinder head - Vemo - Audi Volkswagen

Located in the coolant pipe that connects to the cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2898409
Mfg#:
357919369F
Special Order: No Guaranteed ETA
$19.99 USD
Free Shipping
on orders $49 and up

A/C Pressure Safety Switch

ES#2901740 - 8D0959482B - A/C Pressure Safety Switch - Prevents excess pressure from building within the system - Vemo - Audi Volkswagen

Prevents excess pressure from building within the system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2901740
Mfg#:
8D0959482B
Special Order: No Guaranteed ETA
$56.99 USD
Free Shipping
on orders $49 and up

Knock Sensor - Brown Connector - Priced Each

ES#4900597 - 078905377 - Knock Sensor - Brown Connector - Priced Each - Detects engine ping for timing adjustment - Meyle - Audi

Detects engine ping for timing adjustment affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
From VIN 8D-X-260001, split is in the 1999 model year

Brand:
Meyle - Corporate Logo
ES#:
4900597
Mfg#:
078905377
Special Order: No Guaranteed ETA
$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Knock Sensor - Blue Connector - Priced Each

ES#4487634 - 054905377G - Knock Sensor - Blue Connector - Priced Each - Detects engine ping for timing adjustment - Meyle - Audi Volkswagen

Detects engine ping for timing adjustment affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Up to VIN 8D-X-260000, split is in the 1999 model year

Brand:
Meyle - Corporate Logo
ES#:
4487634
Mfg#:
054905377G
Special Order: No Guaranteed ETA
$44.99 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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