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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Engine Emission Parts

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Ultimate Oil Separator/Pressure Control Valve (PCV) Service Kit

ES#4782919 - 06M129041KT2 - Ultimate Oil Separator/Pressure Control Valve (PCV) Service Kit - Comprehensive kit includes the PCV, Breather lines, and all required hardware - Assembled By ECS - Audi

Comprehensive kit includes the PCV, Breather lines, and all required hardware 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4782919
Mfg#:
06M129041KT2
In Stock
ON SALE!
$303.99

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

$301.45 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RacingLine Oil Catch Can System - B9 S4/S5/SQ5

ES#4620271 - VWR131000 - RacingLine Oil Catch Can System - B9 S4/S5/SQ5 - Features a complete PCV replacement block feeding to an internally-baffled can to eliminate oil-build-up in the intercooler and inlet tract - Racingline - Audi

Features a complete PCV replacement block feeding to an internally-baffled can to eliminate oil-build-up in the intercooler and inlet tract

Brand:
Racingline - Corporate Logo
ES#:
4620271
Mfg#:
VWR131000
Ships in 1 Business Day
$1117.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Basic Oil Separator/Pressure Control Valve (PCV) Kit

ES#4698595 - 06m103515fKT - Basic Oil Separator/Pressure Control Valve (PCV) Kit - Replace your leaking PCV - Genuine Volkswagen Audi - Audi

Replace your leaking PCV

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4698595
Mfg#:
06M103515FKT
In Stock
$167.99

This product was last offered at the strikethrough price on
02-24-2026

$152.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vent Hose

ES#3561980 - 06M103210EB - Vent Hose - Restores the proper flow of crankcase gases, keeping your intake valves cleaner and your emissions systems happy - Genuine Volkswagen Audi - Audi

Restores the proper flow of crankcase gases, keeping your intake valves cleaner and your emissions systems happy

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3561980
Mfg#:
06M103210EB
In Stock
15% off MSRP

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

$170.00

This product was last offered at the strikethrough price on
07-19-2026

$144.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport PCV Breather Hose - EA839 3.0T

ES#4849697 - 034-101-3108 - 034Motorsport PCV Breather Hose - EA839 3.0T - Upgrade your failure-prone PCV breather hose with the high-performance, reliable 034Motorsport PCV Breather Hose - 034Motorsport - Audi

Upgrade your failure-prone PCV breather hose with the high-performance, reliable 034Motorsport PCV Breather Hose

Brand:
034Motorsport - Corporate Logo
ES#:
4849697
Mfg#:
034-101-3108
Back Ordered
Auto Notify
ON SALE! SAVE 10%
$249.00

This product was last offered at the strikethrough price on
06-28-2026

$224.10 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Universal ECS Tuning Baffled Oil Catch Can Kit (8oz)

ES#4040043 - 003779ecs05-01KT - Universal ECS Tuning Baffled Oil Catch Can Kit (8oz) - Capture harmful oil vapors and keep your intake tract clean. Includes our universal catch can, brackets, fittings and drain kit. Everything you need except plumbing to your engine. - ECS - Audi Volkswagen

Capture harmful oil vapors and keep your intake tract clean. Includes our universal catch can, brackets, fittings and drain kit. Everything you need except plumbing to your engine. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4040043
Mfg#:
003779ECS05-01KT
In Stock
ON SALE! SAVE 15%
$417.99

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

$355.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Basic Oil Separator/Pressure Control Valve (PCV) Service Kit

ES#4781296 - 06M103515HKT - Basic Oil Separator/Pressure Control Valve (PCV) Service Kit - Replace your leaking PCV - Assembled By ECS - Audi Porsche

Replace your leaking PCV 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4781296
Mfg#:
06M103515HKT
In Stock
ON SALE!
$132.99

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

$124.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Catch Can Kit - EA839 S4/S5

ES#4849699 - 034-101-1016 - 034Motorsport Catch Can Kit - EA839 S4/S5 - Engineered for enhanced durability to capture crankcase oil deposits before entering your intake tract - 034Motorsport - Audi

Engineered for enhanced durability to capture crankcase oil deposits before entering your intake tract

Brand:
034Motorsport - Corporate Logo
ES#:
4849699
Mfg#:
034-101-1016
Ships on Aug 31, 2026
Auto Notify
ON SALE! SAVE 10%
$729.00

This product was last offered at the strikethrough price on
06-28-2026

$656.10 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator/Pressure Control Valve (PCV)

ES#4772517 - 06M103515H - Oil Separator/Pressure Control Valve (PCV) - Also known as the "PCV". Located on the valve cover - Bremmen Parts - Audi Porsche

Also known as the "PCV". Located on the valve cover 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4772517
Mfg#:
06M103515H
In Stock
ON SALE! SAVE 20%
$104.99

This product was last offered at the strikethrough price on
06-18-2026

$83.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Purge Control Valve Solenoid Valve

ES#3693642 - 06M133240CG - Purge Control Valve Solenoid Valve - Rear most purge Valve and line with T fitting that connects to the turbo and non-return-valve - Genuine Volkswagen Audi - Audi

Rear most purge Valve and line with T fitting that connects to the turbo and non-return-valve

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3693642
Mfg#:
06M133240CG
In Stock
2% off MSRP

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

$158.99

This product was last offered at the strikethrough price on
07-19-2026

$155.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4/S5 3.0T Performance Baffled Oil Catch Can System

ES#4044357 - 023952ecs01KT - Audi B9 S4/S5 3.0T Performance Baffled Oil Catch Can System - Keep your intake tract clean and carbon free - ECS - Audi

Keep your intake tract clean and carbon free 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4044357
Mfg#:
023952ECS01KT
In Stock
ON SALE! SAVE 15%
$555.07

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

$471.81 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VWR Billet Fuel Filler Cap - Push & Twist Type

ES#4040601 - vwr19G711 - VWR Billet Fuel Filler Cap - Push & Twist Type - Beautifully over-engineered in customary RacingLine fashion to give an exquisite feel and beautiful appearance - Make refueling a pleasure! - Racingline - Audi Volkswagen Porsche

Beautifully over-engineered in customary RacingLine fashion to give an exquisite feel and beautiful appearance - Make refueling a pleasure! For vehicles with bayonet/twist lock style gas cap only. Please confirm prior to ordering.

Brand:
Racingline - Corporate Logo
ES#:
4040601
Mfg#:
VWR19G711
In Stock
$137.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Baffled Oil Catch Can - 8oz

ES#4369812 - 003779ECS05-02 - ECS Tuning Baffled Oil Catch Can - 8oz - Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! - ECS - Audi BMW Volkswagen MINI

Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! 10X Entries For Our 25th Anniversary Sweepstakes!
For use with custom plumbing and ECS universal mounting bracket kit

Brand:
ECS - Corporate Logo
ES#:
4369812
Mfg#:
003779ECS05-02
In Stock
ON SALE! SAVE 10%
$238.99

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

$215.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

7/8"(22mm) Flexible Oxygen Sensor Wrench

ES#240942 - FO-78 - 7/8"(22mm) Flexible Oxygen Sensor Wrench - The proper tool to remove difficult-to-reach oxygen sensors - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

The proper tool to remove difficult-to-reach oxygen sensors 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
240942
Mfg#:
FO-78
In Stock
ON SALE! SAVE 25%
$48.99

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

$36.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve - Priced Each

ES#2575254 - 037906283C - Solenoid Valve - Priced Each - Common cure for DTC P0441 - Pierburg - Audi Volkswagen

Common cure for DTC P0441 For vehicle with productions dates up to 07/30/2020

Brand:
Pierburg - Corporate Logo
ES#:
2575254
Mfg#:
037906283C
In Stock
$66.99 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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