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Audi A4 Engine Emission Parts

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Pressure Control Valve (PCV)

ES#4620654 - 06H103495AH - Pressure Control Valve (PCV) - Also called the "breather valve" or "oil separator" - Hengst - Audi Volkswagen
ECS Tuning recommends this product.

Also called the "breather valve" or "oil separator" 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Fits up to production date 3/31/2012 - Please check existing part number before ordering

Brand:
Hengst - Corporate Logo
ES#:
4620654
Mfg#:
06H103495AH
In Stock
$129.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4620655 - 06H103495AK - Pressure Control Valve (PCV) - Also referred to as the breather valve or oil separator - Hengst - Audi
ECS Tuning recommends this product.

Also referred to as the breather valve or oil separator 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Fits from production date 3/31/2012 - Please check existing part number before ordering

Brand:
Hengst - Corporate Logo
ES#:
4620655
Mfg#:
06H103495AK
In Stock
$109.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#3181777 - 06H103495AK - Pressure Control Valve (PCV) - Also referred to as the breather valve or oil separator - Genuine Volkswagen Audi - Audi

Also referred to as the breather valve or oil separator Fits from production date 3/31/2012 - Please check existing part number before ordering

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3181777
Mfg#:
06H103495AK
In Stock
35% off MSRP

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

$306.66

This product was last offered at the strikethrough price on
04-09-2026

$199.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Upper & Lower PCV Hose Set (Replaces 06F103221H & 06F103235A)

ES#4000101 - 023473ecs01KT - Silicone Upper & Lower PCV Hose Set (Replaces 06F103221H & 06F103235A) - Replace your failure-prone plastic PCV hoses with a long term, high quality solution - ECS - Audi Volkswagen

Replace your failure-prone plastic PCV hoses with a long term, high quality solution 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4000101
Mfg#:
023473ECS01KT
In Stock
ON SALE! SAVE 25%
$137.99

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

$103.48 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4772412 - 06H103495AH - 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 Into Our F80 M3 Sweepstakes
Fits up to production date 3/31/2012 - Please check existing part number before ordering

Brand:
Bremmen Parts - Corporate Logo
ES#:
4772412
Mfg#:
06H103495AH
In Stock
ON SALE!
$58.99

This product was last offered at the strikethrough price on
07-28-2026

$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE Recirculating Catch Can Kit

ES#2794717 - IEBACG1 - IE Recirculating Catch Can Kit - Prevent crankcase oil fumes from condensing and filling your turbo piping, intercooler, and intake manifold - Integrated Engineering - Audi

Prevent crankcase oil fumes from condensing and filling your turbo piping, intercooler, and intake manifold
For models with plastic intake manifold only

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794717
Mfg#:
IEBACG1
Back Ordered
Auto Notify
$591.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) 06H103495AK

ES#3102255 - 06H103495AE - Pressure Control Valve (PCV) 06H103495AK - Also referred to as the breather valve or oil separator - Hamburg Tech - Audi

Also referred to as the breather valve or oil separator We Price Match - Give Us A Call or Chat!
Fits from production date 3/31/2012 - Please check existing part number before ordering

Brand:
Hamburg Tech - Corporate Logo
ES#:
3102255
Mfg#:
06H103495AE
In Stock
ON SALE! SAVE 23%
$72.99

This product was last offered at the strikethrough price on
06-10-2026

$55.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator/ Pressure Control Valve (PCV)

ES#4897813 - 06Q103495G - Oil Separator/ Pressure Control Valve (PCV) - Located on top of your valve cover - Genuine Volkswagen Audi - Audi Volkswagen

Located on top of your valve cover For Face-lift models (2020+) with DPAA engine code

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4897813
Mfg#:
06Q103495G
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.

$130.99

This product was last offered at the strikethrough price on
09-08-2026

$128.99 USD
Free Shipping
on orders $49 and up
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 Into Our F80 M3 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

Oil Separator/PCV Valve

ES#3571736 - 06K103495BL - Oil Separator/PCV Valve - Also called the "breather valve" or "oil separator" - Genuine Volkswagen Audi - Audi Volkswagen

Also called the "breather valve" or "oil separator" For vehicles with CYMC engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3571736
Mfg#:
06K103495BL
In Stock
10% off MSRP

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

$250.00

This product was last offered at the strikethrough price on
09-08-2026

$225.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

ES#2598466 - 1K0998262L - Front Oxygen Sensor - Priced Each - Keep your engine running efficiently - Bosch - Audi Volkswagen

Keep your engine running efficiently We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2598466
Mfg#:
1K0998262L
In Stock
$233.99

This product was last offered at the strikethrough price on
07-08-2026

$159.02 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) 06H103495AK

ES#4743015 - 06H103495AE - Pressure Control Valve (PCV) 06H103495AK - Also referred to as the breather valve or oil separator - Bremmen Parts - Audi

Also referred to as the breather valve or oil separator 10X Entries Into Our F80 M3 Sweepstakes

Fits from production date 3/31/2012 - Please check existing part number before ordering

Brand:
Bremmen Parts - Corporate Logo
ES#:
4743015
Mfg#:
06H103495AE
In Stock
ON SALE! SAVE 15%
$78.99

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

$67.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) Repair Kit

ES#4135423 - 06h103495ktKT - Pressure Control Valve (PCV) Repair Kit - Everything you need to replace a faulty PCV or to perform some preventative maintenance - Hamburg Tech - Audi

Everything you need to replace a faulty PCV or to perform some preventative maintenance We Price Match - Give Us A Call or Chat!
Fits from production date 3/31/2012 - Please check existing part number before ordering

Brand:
Hamburg Tech - Corporate Logo
ES#:
4135423
Mfg#:
06H103495KTKT
In Stock
ON SALE! SAVE 22%
$115.99

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

$90.10 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV Solution Kit - with Boost Cap

ES#2794147 - IEBAVC17 - PCV Solution Kit - with Boost Cap - Delete your failure-prone PCV valve - Integrated Engineering - Audi Volkswagen

Delete your failure-prone PCV valve
For vehicles with FSI engines only

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794147
Mfg#:
IEBAVC17
In Stock
$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

ES#1893854 - 1K0998262T - Rear Oxygen Sensor - Priced Each - Keep your engine running efficiently - Bosch - Audi Volkswagen

Keep your engine running efficiently We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
1893854
Mfg#:
1K0998262T
In Stock
$172.99

This product was last offered at the strikethrough price on
04-06-2026

$120.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump Replacement Kit

ES#3508351 - 06J145100PKT1 - Vacuum Pump Replacement Kit - Includes pump, gasket, and hardware for a complete cylinder-head mounted vacuum pump replacement. - Assembled By ECS - Audi

Includes pump, gasket, and hardware for a complete cylinder-head mounted vacuum pump replacement. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3508351
Mfg#:
06J145100PKT1
In Stock
$182.99 USD
Free Shipping
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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