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Audi A4 Engine Emission Parts

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Valve Cover Breather Adapter

ES#3432401 - 034-101-5000 - Valve Cover Breather Adapter - Eliminates failure-prone factory PCV and allows a provision for custom catch can setups on 2.0T TFSI/TSI - 034Motorsport - Audi

Eliminates failure-prone factory PCV and allows a provision for custom catch can setups on 2.0T TFSI/TSI For use with custom DIY catch can setup - Not direct bolt-on

Brand:
034Motorsport - Corporate Logo
ES#:
3432401
Mfg#:
034-101-5000
Back Ordered
$333.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

PCV Breather Hose

ES#3439117 - 06L103213AD - PCV Breather Hose - Connects PCV to the intake manifold - Genuine Volkswagen Audi - Audi

Connects PCV to the intake manifold For vehicles with CYMC engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3439117
Mfg#:
06L103213AD
Ships in 4 Business Days
1% off MSRP

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

$155.00

This product was last offered at the strikethrough price on
07-24-2026

$152.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RS5 Gas Cap

ES#3457816 - 8W0201550B - 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#:
3457816
Mfg#:
8W0201550B
In Stock
8% off MSRP

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

$85.00

This product was last offered at the strikethrough price on
07-24-2026

$77.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Tool - 22mm

ES#3673912 - B8800067 - Oxygen Sensor Tool - 22mm - 1/2" Drive - 7/8" x 6" - Extra Long - Bav Auto Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

1/2" Drive - 7/8" x 6" - Extra Long 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bav Auto Tools - Corporate Logo
ES#:
3673912
Mfg#:
B8800067
Ships on Sep 1, 2026
Auto Notify
ON SALE! SAVE 20%
$29.99

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

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VW | Repair Kit, crankcase ventilation | VAICO Expert Kits+

ES#4859671 - 06H103495AKKIT - VW | Repair Kit, crankcase ventilation | VAICO Expert Kits+ - Vaico - Audi

We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4859671
Mfg#:
06H103495AKKIT
In Stock
ON SALE! SAVE 40%
$304.99

This product was last offered at the strikethrough price on
02-14-2026

$184.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum System Purge Valve & Hose Set

ES#2644254 - 06H133781CL - Vacuum System Purge Valve & Hose Set - Includes the solenoid valve and check valve with 3 hoses - Genuine Volkswagen Audi - Audi

Includes the solenoid valve and check valve with 3 hoses Fits facelift (from 2013) models with CFKA, CPMA, and CPMB engine codes

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2644254
Mfg#:
06H133781CL
In Stock
ON SALE!
$276.05

This product was last offered at the strikethrough price on
06-25-2026

$262.25 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) Kit

ES#5469767 - 06h103495ah-KT - Pressure Control Valve (PCV) Kit - Also called the "breather valve" or "oil separator" - Hamburg Tech - Audi Volkswagen

Also called the "breather valve" or "oil separator" Fits up to production date 3/31/2012 - Please check existing part number before ordering

Brand:
Hamburg Tech - Corporate Logo
ES#:
5469767
Mfg#:
06H103495AH-KT
In Stock
$127.99

This product was last offered at the strikethrough price on
06-11-2026

$119.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV Breather Hose

ES#4743013 - 06J103221A - PCV Breather Hose - Connects PCV to the intake manifold - Bremmen Parts - Audi Volkswagen

Connects PCV to the intake manifold 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4743013
Mfg#:
06J103221A
In Stock
ON SALE! SAVE 10%
$19.99

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

$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

ES#319089 - 1K0998262L - Front Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi Volkswagen

Keep your engine running efficiently

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
319089
Mfg#:
1K0998262L
Ships in 1-2 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.

$462.99

This product was last offered at the strikethrough price on
07-24-2026

$431.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Adapter

ES#253059 - 06A115405BS - Oil Filter Adapter - With an integrated oil separator - Genuine Volkswagen Audi - Audi Volkswagen

With an integrated oil separator Engine code AWM

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
253059
Mfg#:
06A115405BS
In Stock at Vendor
7% off MSRP

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

$462.99

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

$428.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap With Strap

ES#3514670 - 4F0201550J - Gas Cap With Strap - Replace your leaking cap, or the one you left at the pump - URO - Audi

Replace your leaking cap, or the one you left at the pump 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For sedan/avant models only

Brand:
URO - Corporate Logo
ES#:
3514670
Mfg#:
4F0201550J
In Stock
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Catch Can Kit

ES#2848071 - CTSCCB8TFSi - Billet Catch Can Kit - Reduce oil deposits that lower performance - CTS - Audi

Reduce oil deposits that lower performance Up to the 2012 model year

Brand:
CTS - Corporate Logo
ES#:
2848071
Mfg#:
CTSCCB8TFSI
Back Ordered
Auto Notify
ON SALE!
$449.99

This product was last offered at the strikethrough price on
07-10-2026

$424.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Torx Bolt - Priced Each

ES#467607 - N10196103 - Torx Bolt - Priced Each - Install new hardware with your new parts. M6x18 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x18

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467607
Mfg#:
N10196103
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4818467 - 06F129101P - Pressure Control Valve (PCV) - Also called the "breather valve" or "oil separator" - Bremmen Parts - Audi Volkswagen

Also called the "breather valve" or "oil separator" 10X Entries For Our 25th Anniversary Sweepstakes!

From production date 12/17/2005

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818467
Mfg#:
06F129101P
In Stock
ON SALE! SAVE 17%
$38.99

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

$32.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#11898 - 16978 - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Bosch - Audi

Keep your engine running efficiently 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
11898
Mfg#:
16978
In Stock at Vendor
$128.99

This product was last offered at the strikethrough price on
05-19-2026

$110.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve - Priced Each

ES#4643076 - 037906283C - Solenoid Valve - Priced Each - Common cure for DTC P0441 - URO - Audi Volkswagen

Common cure for DTC P0441 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4643076
Mfg#:
037906283C
In Stock
Limited Qty Sale
$45.99

This product was last offered at the strikethrough price on
06-09-2026

$38.99 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.

Let us help you find the parts that fit your Audi

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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