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Audi C4 S4 Quattro 20v T

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Audi C4 S4 Quattro 20v T Engine Electrical Parts

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Bumper 300

ES#4492820 - 40-060 - Bumper 300 - Don't scratch your paint with your battery tender. - CTEK - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Don't scratch your paint with your battery tender. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTEK - Corporate Logo
ES#:
4492820
Mfg#:
40-060
In Stock at Vendor
$56.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Battery Disconnect Switch - 4 Terminal

ES#3604639 - EL-LA4578 - Battery Disconnect Switch - 4 Terminal - Quickly shut down your battery in an emergency. - Rennline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Quickly shut down your battery in an emergency. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rennline - Corporate Logo
ES#:
3604639
Mfg#:
EL-LA4578
Ships in 4 Business Days
$55.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

OE Voltage Regulator

ES#2480 - 30097 - OE Voltage Regulator - Brush set that screws in the back of the alternator - Bosch - Audi

Brush set that screws in the back of the alternator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2480
Mfg#:
30097
Special Order: No Guaranteed ETA
$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK Indicator Panel

ES#3676988 - 56-380 - CTEK Indicator Panel - Displays battery health at all times. - CTEK - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Displays battery health at all times. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTEK - Corporate Logo
ES#:
3676988
Mfg#:
56-380
In Stock at Vendor
$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Battery Disconnect Switch - 2 Terminal W/ Removable Key

ES#3604638 - EL-LA45758 - Battery Disconnect Switch - 2 Terminal W/ Removable Key - Quickly shut down your battery in an emergency. - Rennline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Quickly shut down your battery in an emergency. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rennline - Corporate Logo
ES#:
3604638
Mfg#:
EL-LA45758
Ships in 5 Business Days
$30.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK Mounting Bracket

ES#4492819 - 40-006 - CTEK Mounting Bracket - Easily mount your charger in the garage up and out of the way. - CTEK - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Easily mount your charger in the garage up and out of the way. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTEK - Corporate Logo
ES#:
4492819
Mfg#:
40-006
In Stock at Vendor
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Battery Treatment Kit

ES#4430758 - mc101nocoKT - Battery Treatment Kit - Every thing you need to keep your battery terminals clean. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Every thing you need to keep your battery terminals clean. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4430758
Mfg#:
MC101NOCOKT
In Stock
$9.00

This product was last offered at the strikethrough price on
05-27-2026

$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Oil Pressure Switch - 1.8 bar

ES#2812957 - 056919081E - Oil Pressure Switch - 1.8 bar - Low pressure screw in oil pressure switch. M10x1 - Hamburg Tech - Audi Volkswagen

Low pressure screw in oil pressure switch. M10x1 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
AAN Engine Code Only

Brand:
Hamburg Tech - Corporate Logo
ES#:
2812957
Mfg#:
056919081E
Ships in 1 Business Day
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

HD Precision Boost Battery Clamps - NOCO

ES#4346366 - GBC003 - HD Precision Boost Battery Clamps - NOCO - The needle nose design on these heavy-duty battery clamps ensure fitment in tight spaces for both 12-volt gas and diesel engines. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

The needle nose design on these heavy-duty battery clamps ensure fitment in tight spaces for both 12-volt gas and diesel engines. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4346366
Mfg#:
GBC003
In Stock
ON SALE!
$24.99

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

$24.26 USD
Free Shipping
on orders $49 and up

Wire With Terminals For 90 Degree 6 Pin Bulkhead - Red

ES#4883019 - 201-0360-RED - Wire With Terminals For 90 Degree 6 Pin Bulkhead - Red - Purchase the wires you need for your electrical bulkhead fitting here. Featuring Red FEP wire pre-cut to 24" 12 Gauge wire with the appropriate terminal pre-crimped and ready to install! - Precision Raceworks - Audi BMW Volkswagen Mercedes Benz

Purchase the wires you need for your electrical bulkhead fitting here. Featuring Red FEP wire pre-cut to 24" 12 Gauge wire with the appropriate terminal pre-crimped and ready to install! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4883019
Mfg#:
201-0360-RED
Ships in 6 Business Days
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor With O-Ring - 2 Pin

ES#2485 - 025906041AKT - Coolant Temperature Sensor With O-Ring - 2 Pin - Blue sensor used by the ECU to control engine fueling - Assembled By ECS - Audi Volkswagen

Blue sensor used by the ECU to control engine fueling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2485
Mfg#:
025906041AKT
In Stock
ON SALE! SAVE 14%
$12.99

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

$11.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pressure Switch - 1.8 bar

ES#2894726 - 056919081 - Oil Pressure Switch - 1.8 bar - Low pressure screw in oil pressure switch. M10x1 - Vemo - Audi Volkswagen

Low pressure screw in oil pressure switch. M10x1 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
AAN Engine Code Only

Brand:
Vemo - Corporate Logo
ES#:
2894726
Mfg#:
056919081
In Stock at Vendor
$10.16 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Offset Oxygen Sensor Wrench- Extended

ES#4001169 - CTA2065 - Offset Oxygen Sensor Wrench- Extended - Extra length is needed sometimes - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Extra length is needed sometimes affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTA Tools - Corporate Logo
ES#:
4001169
Mfg#:
CTA2065
Back Ordered
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Memory Saver Tool

ES#3672745 - 295A - Memory Saver Tool - Plugs directly into your 12 volt receptacle to prevent lost presets and settings while the battery is disconnected. - Lang - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Plugs directly into your 12 volt receptacle to prevent lost presets and settings while the battery is disconnected. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Lang - Corporate Logo
ES#:
3672745
Mfg#:
295A
Ships in 6 Business Days
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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
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

Hi/Low Volt Circuit Tester

ES#4336943 - CTA3022 - Hi/Low Volt Circuit Tester - Tests high voltage in spark plugs, plug wires and distributor caps - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Tests high voltage in spark plugs, plug wires and distributor caps affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTA Tools - Corporate Logo
ES#:
4336943
Mfg#:
CTA3022
Ships on Jul 2, 2026
$7.12 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.

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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