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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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Vent Tube

Connects to the leak detection pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450440
Mfg#:
8K0201997AH
Special Order: No Guaranteed ETA
9% off MSRP

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

$185.99

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

$170.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Electrical Connector Kit - Housing With Pins & Wire Seals (3)

ES#4460523 - 3B0973703G-KIT - Electrical Connector Kit - Housing With Pins & Wire Seals (3) - Includes connector housing with terminals and seals. Great for an OE replacement or custom upgrades. - ECS - Audi Volkswagen

Includes connector housing with terminals and seals. Great for an OE replacement or custom upgrades. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Please reference original part number from existing connector to confirm fitment, prior to ordering. *OEM

Brand:
ECS - Corporate Logo
ES#:
4460523
Mfg#:
3B0973703G-KIT
In Stock
ON SALE! SAVE 88%
$25.99

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

$3.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coils - Set Of Six

ES#4361441 - 06E905115GKT6 - Ignition Coils - Set Of Six - A common cure for misfire codes - Bremi - Audi

A common cure for misfire codes affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Bremi - Corporate Logo
ES#:
4361441
Mfg#:
06E905115GKT6
In Stock at Vendor
$167.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

MAP Sensor - Priced Each

ES#275347 - 038906051J - MAP Sensor - Priced Each - Manifold absolute pressure sensor - Genuine Volkswagen Audi - Audi

Manifold absolute pressure sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Located on the front left & right of the supercharger

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275347
Mfg#:
038906051J
Ships in 3 Business Days
7% off MSRP

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

$180.99

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

$167.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Green Knock Sensor With Harness - 465mm

ES#2894890 - 06E905376A - Green Knock Sensor With Harness - 465mm - Detects engine ping for timing adjustment, 465mm length with green connector - Vemo - 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:
Vemo - Corporate Logo
ES#:
2894890
Mfg#:
06E905376A
In Stock at Vendor
$170.00

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

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

MAP Sensor

ES#4940600 - 03C906051F - MAP Sensor - Manifold absolute pressure sensor, lets your ECU know how much air pressure is in your intake manifold / supercharger - Bremmen Parts - Audi Volkswagen

Manifold absolute pressure sensor, lets your ECU know how much air pressure is in your intake manifold / supercharger affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Located on the rear of the supercharger

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940600
Mfg#:
03C906051F
In Stock
ON SALE! SAVE 14%
$15.99

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

$13.76 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

6-pin connector - priced each

ES#1925305 - 4H0973713 - 6-pin connector - priced each - Replace a broken connector to restore function - Genuine Volkswagen Audi - Audi

Replace a broken connector to restore function affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1925305
Mfg#:
4H0973713
Ships in 3 Business Days
8% off MSRP

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

$12.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

A/C Pressure Switch

ES#4575869 - 9A7959126A - A/C Pressure Switch - Also use (Qty.) (1) 7H0 820 896 o-ring. - Genuine Porsche - Audi

Also use (Qty.) (1) 7H0 820 896 o-ring. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Porsche - Corporate Logo
ES#:
4575869
Mfg#:
9A7959126A
Ships in 4 Business Days
$151.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leak Detection Pump Filter With Vent Tube

ES#3462935 - 8K0201997AL - Leak Detection Pump Filter With Vent Tube - Vent tube assembly with LDP filter - Kayser - Audi

Vent tube assembly with LDP filter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Kayser - Corporate Logo
ES#:
3462935
Mfg#:
8K0201997AL
Ships in 1 day
$42.00

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

$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rennline RemoteKill Switch Pull Cable Kit with T-Handle - Black

Shut down quickly & remotely - required by many racing organizations affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rennline - Corporate Logo
ES#:
3552508
Mfg#:
EL21BLACK
Ships in 5 Business Days
$75.00 USD
Free Shipping
on orders $49 and up

Multipurpose Relay - Priced Each

ES#2899228 - 4H0951253A - Multipurpose Relay - Priced Each - Replacement 4-pin/40 amp relay - Vemo - Audi Volkswagen

Replacement 4-pin/40 amp relay affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Used for ECU control

Brand:
Vemo - Corporate Logo
ES#:
2899228
Mfg#:
4H0951253A
In Stock at Vendor
Auto Notify
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Reusable Cable Tie - Priced Each

ES#433117 - 8D0971850C - Reusable Cable Tie - Priced Each - Used in various locations in your vehicle - Genuine Volkswagen Audi - Audi

Used in various locations in your vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
433117
Mfg#:
8D0971850C
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK Storage Bag

ES#4492955 - 40-468 - CTEK Storage Bag - The CTEK storage bag is tough, durable, and lightweight to protect your battery tender and keep it safe from the elements wherever you take it. - CTEK - Audi BMW Volkswagen Mercedes Benz MINI Porsche

The CTEK storage bag is tough, durable, and lightweight to protect your battery tender and keep it safe from the elements – wherever you take it. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTEK - Corporate Logo
ES#:
4492955
Mfg#:
40-468
In Stock
Limited Qty Sale
$87.99

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

$72.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

ES#4135682 - 06E906265Q - Rear Oxygen Sensor - Priced Each - Keep your engine running efficiently - Denso - Audi

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

Brand:
Denso - Corporate Logo
ES#:
4135682
Mfg#:
06E906265Q
Ships in 1 Business Day
$154.99

This product was last offered at the strikethrough price on
03-16-2026

$137.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Electrical Connector Kit - Housing With Pins & Wire Seals (3)

ES#4460527 - 8E0973703B-KIT - Electrical Connector Kit - Housing With Pins & Wire Seals (3) - Includes connector housing with terminals and seals. Great for an OE replacement or custom upgrades. - ECS - Audi Volkswagen

Includes connector housing with terminals and seals. Great for an OE replacement or custom upgrades. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Please reference original part number from existing connector to confirm fitment, prior to ordering. *OEM

Brand:
ECS - Corporate Logo
ES#:
4460527
Mfg#:
8E0973703B-KIT
In Stock
ON SALE! SAVE 86%
$25.99

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

$3.53 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo B5 S4 MAF Housing 85mm (HITACHI)

ES#2862954 - CTSHW040 - CTS Turbo B5 S4 MAF Housing 85mm (HITACHI) - Designed for cars running RS4 or larger turbochargers with upgraded software, and upgraded fuel injectors. - CTS - Audi

Designed for cars running RS4 or larger turbochargers with upgraded software, and upgraded fuel injectors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTS - Corporate Logo
ES#:
2862954
Mfg#:
CTSHW040
Ships in 8 Business Days
$129.99 USD
Free Shipping
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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