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Audi B8/B8.5 S4 Quattro 3.0T

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Audi B8/B8.5 S4 Quattro 3.0T Engine Electrical Parts

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GENIUS 6V / 12V 2 Amp Battery Charger - NOCO

ES#4031173 - GENIUS2 - GENIUS 6V / 12V 2 Amp Battery Charger - NOCO - The GENIUS2 is similar to the G1100, just better. It's 30% smaller and delivers 140% more power. And it's simpler and easier to use than ever before. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

The GENIUS2 is similar to the G1100, just better. It's 30% smaller and delivers 140% more power. And it's simpler and easier to use than ever before. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4031173
Mfg#:
GENIUS2
In Stock
23% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$64.95

This product was last offered at the strikethrough price on
07-06-2026

$49.94 USD
Free Shipping
on orders $49 and up

120 pc Fuse Assortment

ES#4371741 - W5368 - 120 pc Fuse Assortment - A must for any toolbox. - Performance Tool - Audi BMW Volkswagen Mercedes Benz MINI Porsche

A must for any toolbox. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Performance Tool - Corporate Logo
ES#:
4371741
Mfg#:
W5368
Ships in 1 Business Day
$13.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Voltage Regulator

ES#2774540 - 06H903803E - Voltage Regulator - Located on the rear of the alternator - Genuine Volkswagen Audi - Audi

Located on the rear of the alternator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Bosch style alternators from the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2774540
Mfg#:
06H903803E
Ships in 2 Business Days
9% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$263.99

This product was last offered at the strikethrough price on
02-26-2026

$240.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Iridium Spark Plug

ES#4476254 - 101905631G - Iridium Spark Plug - 2X longer service life compared to standard copper plugs! - Denso - Audi

2X longer service life compared to standard copper plugs! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Denso - Corporate Logo
ES#:
4476254
Mfg#:
101905631G
In Stock at Vendor
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

ES#2678230 - 06E906265R - Front Oxygen Sensor - Priced Each - Keep your engine running efficiently - Walker - Audi

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

Brand:
Walker - Corporate Logo
ES#:
2678230
Mfg#:
06E906265R
Back Ordered
$227.99

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

$221.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

A/C Pressure Switch

ES#4057423 - 4H0959126B - A/C Pressure Switch - Prevents excess pressure from building within the system - Four Seasons - Audi

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#:
4057423
Mfg#:
4H0959126B
In Stock at Vendor
$77.99

This product was last offered at the strikethrough price on
01-14-2026

$73.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pressure Sender - 2 Pin

ES#2894899 - 06E919081C - Oil Pressure Sender - 2 Pin - Senses engine oil pressure for the gauge and ECU - Vemo - Audi Volkswagen

Senses engine oil pressure for the gauge and ECU affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
2894899
Mfg#:
06E919081C
Ships in 10 Business Days
Auto Notify
$29.99

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

$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Pressure Sender - 1 Pin

ES#4135666 - 038919081P - Oil Pressure Sender - 1 Pin - Senses engine oil pressure for the gauge and ECU - Vemo - Audi Volkswagen

Senses engine oil pressure for the gauge and ECU affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
4135666
Mfg#:
038919081P
In Stock at Vendor
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Schwaben Digital Circuit Tester With Test Probes

ES#3979351 - 029054SCH01A - Schwaben Digital Circuit Tester With Test Probes - Circuit tester for 6-24 Volt systems! - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Circuit tester for 6-24 Volt systems! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
3979351
Mfg#:
029054SCH01A
Ships on Dec 28, 2026
ON SALE!
$37.99

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

$36.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Pressure Fuel Pump O-Ring

ES#4342380 - 03C127311 - High Pressure Fuel Pump O-Ring - Seals the high pressure fuel pump to the cylinder head - Febi - Audi Volkswagen

Seals the high pressure fuel pump to the cylinder head 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#:
4342380
Mfg#:
03C127311
Ships in 1-2 days
$7.99

This product was last offered at the strikethrough price on
03-23-2026

$4.45 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RacingLine Higher Output Ignition Coils - Red - Set of Six

ES#4846426 - VWR900003-6KT - RacingLine Higher Output Ignition Coils - Red - Set of Six - Delivers greater energy output, ensuring a stronger and more consistent spark. A simple plug-and-play upgrade over the OE factory coils. - Racingline - Audi

Delivers greater energy output, ensuring a stronger and more consistent spark. A simple plug-and-play upgrade over the OE factory coils. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Racingline - Corporate Logo
ES#:
4846426
Mfg#:
VWR900003-6KT
Ships in 1-2 days
ON SALE! SAVE 10%
$236.04

This product was last offered at the strikethrough price on
07-01-2026

$212.44 USD
Free Shipping
on orders $49 and up

GENIUS 6V / 12V 5 Amp Battery Charger - NOCO

ES#4031177 - GENIUS5 - GENIUS 6V / 12V 5 Amp Battery Charger - NOCO - Meet the GENIUS5 - Similar to the G3500, just better. It's 34% smaller and delivers 65% more power. And it's simpler and easier to use than ever before. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Meet the GENIUS5 - Similar to the G3500, just better. It's 34% smaller and delivers 65% more power. And it's simpler and easier to use than ever before. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4031177
Mfg#:
GENIUS5
Ships in 8 Business Days
22% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$89.99

This product was last offered at the strikethrough price on
07-06-2026

$69.99 USD
Free Shipping
on orders $49 and up

Green Knock Sensor With Harness - 465mm

ES#2598260 - 06E905376A - Green Knock Sensor With Harness - 465mm - Detects engine ping for timing adjustment, 465mm length with green connector - FAE - Audi Volkswagen

Detects engine ping for timing adjustment, 465mm length with green connector affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For cylinders 1-3

Brand:
FAE - Corporate Logo
ES#:
2598260
Mfg#:
06E905376A
Ships in 2 Business Days
$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK Bumper

ES#4492822 - 56-915 - CTEK Bumper - 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#:
4492822
Mfg#:
56-915
In Stock at Vendor
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

GENIUS 4 Bank 6V / 12V 8 Amp Battery Charger - NOCO

ES#4364629 - GENIUS2X4 - GENIUS 4 Bank 6V / 12V 8 Amp Battery Charger - NOCO - Similar to the G4, just better. It's 40% smaller and delivers 140% more power. It's the all-in-one 4-bank solution - battery charger, battery maintainer, trickle charger, plus battery desulfator. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Similar to the G4, just better. It's 40% smaller and delivers 140% more power. It's the all-in-one 4-bank solution - battery charger, battery maintainer, trickle charger, plus battery desulfator. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4364629
Mfg#:
GENIUS2X4
Ships in 8 Business Days
20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$249.99

This product was last offered at the strikethrough price on
07-06-2026

$199.99 USD
Free Shipping
on orders $49 and up

Boost HD UltraSafe Lithium 2000 Amp Jump Starter - NOCO

ES#4055329 - NOCGB70 - Boost HD UltraSafe Lithium 2000 Amp Jump Starter - NOCO - This compact, 12V spark-proof jump starter is great for jumping gas vehicles with a 8.0L engine or less and diesel vehicles up to 6.0L, up to 40 times on a single charge. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

This compact, 12V spark-proof jump starter is great for jumping gas vehicles with a 8.0L engine or less and diesel vehicles up to 6.0L, up to 40 times on a single charge. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4055329
Mfg#:
NOCGB70
Ships in 8 Business Days
20% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$249.99

This product was last offered at the strikethrough price on
07-06-2026

$199.99 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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