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Audi S4 Engine Electrical Parts

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Relay

ES#4331936 - 4H0951253C - Relay - Make sure your electrical components are in working order - Meyle - Audi Volkswagen

Make sure your electrical components are in working order 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4331936
Mfg#:
4H0951253C
Ships on Sep 23, 2026
$7.99 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 5X Entries Into Our F80 M3 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
Ships on Sep 23, 2026
$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

A/C Pressure Switch

ES#4901122 - 5Q0959126B - A/C Pressure Switch - A/C Pressure Sensor Restore proper A/C compressor operation and keep your cabin cool. - Meyle - Audi Volkswagen

A/C Pressure Sensor Restore proper A/C compressor operation and keep your cabin cool. 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4901122
Mfg#:
5Q0959126B
Ships on Sep 23, 2026
$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Pump

ES#4901320 - 8K0919051G - Fuel Pump - Restore proper fuel pressure, cure hard starts, and fix erratic fuel gauge readings. - Meyle - Audi

Restore proper fuel pressure, cure hard starts, and fix erratic fuel gauge readings. 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Up to the 2012 model year

Brand:
Meyle - Corporate Logo
ES#:
4901320
Mfg#:
8K0919051G
Ships on Sep 24, 2026
Auto Notify
$233.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Alternator - 180 Amp

Restore your charging system with this brand new unit We Price Match - Give Us A Call or Chat!
For vehicles with Valeo style alternators from the 2013 model year

Brand:
Valeo - Corporate Logo
ES#:
3468856
Mfg#:
06E903018L
Ships on Sep 30, 2026
$717.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Starter

ES#1875 - SR0422kt - Remanufactured Starter - Includes a $44.20 refundable core charge - Bosch - Audi Volkswagen

Includes a $44.20 refundable core charge We Price Match - Give Us A Call or Chat!
For vehicles with an automatic transmission only

Brand:
Bosch - Corporate Logo
ES#:
1875
Mfg#:
SR0422KT
Ships on Oct 1, 2026
$516.99

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

$260.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Alternator - 120 Amp, Remanufactured

ES#260976 - AL0727XKT - Alternator - 120 Amp, Remanufactured - Price includes $111.00 core charge, see learn more for more info - Bosch - Audi Volkswagen

Price includes $111.00 core charge, see learn more for more info We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
260976
Mfg#:
AL0727XKT
Ships on Oct 1, 2026
$460.99

This product was last offered at the strikethrough price on
08-25-2026

$459.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Alternator - 140 Amp

Price includes a $109.2 refundable core charge Please check existing part number before ordering.

Brand:
Bosch - Corporate Logo
ES#:
5506473
Mfg#:
06H903016LBKT
Ships on Oct 1, 2026
$524.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Starter Motor

Price includes a $22.10 refundable core charge

Brand:
Bosch - Corporate Logo
ES#:
5506891
Mfg#:
034911023XBKT
Ships on Oct 1, 2026
$178.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Alternator - 150-Amp

Price includes a $109.20 refundable core charge

Brand:
Bosch - Corporate Logo
ES#:
5506556
Mfg#:
06E903016SBKT
Ships on Oct 1, 2026
$386.99 USD
This product is lifetime replacement eligible Lifetime Replacement

In-Tank Fuel Pump Gasket

ES#5339712 - 1J0919133B - In-Tank Fuel Pump Gasket - Located between the retaining ring and fuel tank - Elring - Audi Volkswagen

Located between the retaining ring and fuel tank 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5339712
Mfg#:
1J0919133B
Special Order: No Guaranteed ETA
$10.99 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

Sealing O-Ring - Priced Each

Sealing o-ring used in various areas on your European vehicle - 12.2x1.65 2X Entries Into Our F80 M3 Sweepstakes
Seals the connection between the cooling hoses and the alternator. - From VIN 8E-7-085001, split is in the 2007 model year

Brand:
Elring - Corporate Logo
ES#:
5340799
Mfg#:
WHT001011A
Special Order: No Guaranteed ETA
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Electrical Parts

With automotive electrical content growing yearly, it has never been more important to keep your charging and electrical system in top working condition. ECS Tuning stocks a huge and constantly growing inventory of electrical sensors, electric motors, and electronic actuators from original equipment and name-brand aftermarket suppliers.

Let us help you find the parts that fit your Audi

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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