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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 Emission Parts

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Oil Separator/Pressure Control Valve (PCV)

ES#5340484 - 06E103547AH - Oil Separator/Pressure Control Valve (PCV) - Elring - Audi

2X Entries Into Our F80 M3 Sweepstakes
Fits from the 2013 model year

Brand:
Elring - Corporate Logo
ES#:
5340484
Mfg#:
06E103547AH
Ships on Nov 2, 2026
$114.99 USD
Free Shipping
on orders $49 and up

Rear Oxygen Sensor - Priced Each

ES#281028 - 06E906265Q - Rear Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi

Keep your engine running efficiently Fits the left and right position

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281028
Mfg#:
06E906265Q
Ships in 4 Business Days
$342.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) Kit

ES#3648514 - 06e103547abKT - Pressure Control Valve (PCV) Kit - This valve sits in the engine valley, beneath the supercharger compressor. - Genuine Volkswagen Audi - Audi

This valve sits in the engine valley, beneath the supercharger compressor. Fits from the 2013 year model

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648514
Mfg#:
06E103547ABKT
In Stock
$337.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Catch Can O-ring

ES#3097721 - N1.50X051 - ECS Catch Can O-ring - Replacement ECS catch can O-ring - ECS - Audi BMW Volkswagen MINI

Replacement ECS catch can O-ring 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3097721
Mfg#:
N1.50X051
In Stock
ON SALE! SAVE 25%
$5.99

This product was last offered at the strikethrough price on
06-13-2026

$4.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap

ES#5341357 - 8K0201550N - Gas Cap - Includes seal and retaining strap - URO - Audi

Includes seal and retaining strap 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5341357
Mfg#:
8K0201550N
Ships in 1 Business Day
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Basic Pressure Control Valve (PCV) Kit

ES#3648509 - 06e103547acKT - Basic Pressure Control Valve (PCV) Kit - This valve sits in the engine valley, beneath the supercharger compressor. - Genuine Volkswagen Audi - Audi

This valve sits in the engine valley, beneath the supercharger compressor. Fits up to the 2012 year model

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648509
Mfg#:
06E103547ACKT
In Stock
$349.99

This product was last offered at the strikethrough price on
08-14-2026

$281.99 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 Fits the left and right position

Brand:
Denso - Corporate Logo
ES#:
4135682
Mfg#:
06E906265Q
Ships in 1 Business Day
$142.99

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

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

Solenoid Valve - Priced Each

ES#4883338 - 037906283C - Solenoid Valve - Priced Each - Common cure for DTC P0441 - Rein - Audi Volkswagen

Common cure for DTC P0441 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4883338
Mfg#:
037906283C
In Stock
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

Keep your engine running efficiently Fits the left and right position

Brand:
Facet - Corporate Logo
ES#:
4135683
Mfg#:
06E906265Q
Ships in 1 Business Day
$91.99

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

$88.99 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 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

Vent Tube

ES#450388 - 8K0201183A - Vent Tube - Connects the charcoal canister and the fuel pump - Genuine Volkswagen Audi - Audi

Connects the charcoal canister and the fuel pump

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450388
Mfg#:
8K0201183A
Ships in 3 Business Days
12% off MSRP

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

$239.99

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

$211.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Thread Chaser

ES#4001163 - CTA2068 - Oxygen Sensor Thread Chaser - Remove rust and dirt for easy installation with this tool - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Remove rust and dirt for easy installation with this tool

Brand:
CTA Tools - Corporate Logo
ES#:
4001163
Mfg#:
CTA2068
In Stock
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RS5 Gas Cap

ES#4428997 - 8W0201550J - RS5 Gas Cap - Fuel filler cap with Audi 'RS' logo - Includes retaining strap - Genuine Volkswagen Audi - Audi

Fuel filler cap with Audi 'RS' logo - Includes retaining strap

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4428997
Mfg#:
8W0201550J
Ships in 3 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.

$69.99

This product was last offered at the strikethrough price on
10-13-2026

$63.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

Keep your engine running efficiently 10X Entries Into Our F80 M3 Sweepstakes
Fits the left and right position

Brand:
Bremmen Parts - Corporate Logo
ES#:
5373885
Mfg#:
06E906265AJ
Special Order: No Guaranteed ETA
ON SALE! SAVE 10%
$203.99

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

$183.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Hose - Inlet

ES#461721 - 8T0133817D - Secondary Air Injection Hose - Inlet - Connects the secondary air pump to the air box - Genuine Volkswagen Audi - Audi

Connects the secondary air pump to the air box Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
461721
Mfg#:
8T0133817D
In Stock
12% off MSRP

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

$194.99

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

$171.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vent Tube

Connects to the leak detection pump

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450440
Mfg#:
8K0201997AH
Ships in 7 Business Days
12% 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
08-31-2026

$163.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Emission Parts

Repairing failed emission components doesn't just turn off the check engine light so you can pass your local emissions test, it also improves performance and fuel economy. ECS stocks all common emission controls, from oxygen sensors to PCV valves.

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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