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Audi B5 S4 2.7T

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Audi B5 S4 2.7T Engine Electrical Parts

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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 Nov 3, 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

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

Fuel Pump Gasket

Located between the union nut and the fuel tank 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5340912
Mfg#:
1J0919133
Special Order: No Guaranteed ETA
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coils - Set Of 6

ES#4070192 - 0589051057KT - Ignition Coils - Set Of 6 - Keep your engine running strong - Hella - Audi

Keep your engine running strong

Brand:
Hella - Corporate Logo
ES#:
4070192
Mfg#:
0589051057KT
Ships on Nov 20, 2026
$203.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Priced Each

ES#4040034 - 058905105 - Ignition Coil - Priced Each - Includes the spark plug boot - Hella - Audi Volkswagen

Includes the spark plug boot

Brand:
Hella - Corporate Logo
ES#:
4040034
Mfg#:
058905105
Special Order: No Guaranteed ETA
$33.99 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. 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

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

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

FP34 Fuel Pump Surge Tank

ES#4877045 - 034-106-A002/3 - FP34 Fuel Pump Surge Tank - Designed for Bosch 044 Fuel Pump - 034Motorsport - Audi Volkswagen

Designed for Bosch 044 Fuel Pump 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4877045
Mfg#:
034-106-A002/3
Back Ordered
$351.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Control Unit

ES#2586581 - 8D0997551DXKT - Engine Control Unit - Price includes a $300 core charge - Genuine Volkswagen Audi - Audi

Price includes a $300 core charge Manual transmission up to VIN 8D-Y-200000, split is in the 2000 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2586581
Mfg#:
8D0997551DXKT
Back Ordered
$1455.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Remanufactured Starter

ES#2531684 - 078911023DXKT - Remanufactured Starter - Price includes $80 refundable core charge - Genuine Volkswagen Audi - Audi Volkswagen

Price includes $80 refundable core charge For vehicles that came with Bosch starters - Please check existing part # before ordering

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2531684
Mfg#:
078911023DXKT
Back Ordered
$717.99

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

$691.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK MXS 25EC

Fully automatic 8 step smart charger and battery support unit that delivers 25A to 12V batteries from 40–500Ah.

Brand:
CTEK - Corporate Logo
ES#:
4492939
Mfg#:
40-128
Back Ordered
$437.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK Pro Battery Tester

Don't leave yourself stranded with a dead battery.

Brand:
CTEK - Corporate Logo
ES#:
4492938
Mfg#:
40-209
Back Ordered
$1103.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Alternator - 120 Amps

Includes a $250 refundable core charge For cars that came with Bosch alternators. Please check existing alternator part number before ordering

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2580828
Mfg#:
038903018FXKT
Back Ordered
$1001.99

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

$976.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Battery Relocation Kit

Odyssey 680 - Switch Mount

Brand:
Rennline - Corporate Logo
ES#:
2839918
Mfg#:
EL4138
Back Ordered
ON SALE! SAVE 16%
$173.00

This product was last offered at the strikethrough price on
10-07-2026

$145.00 USD
Free Shipping
on orders $49 and up

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.

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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