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Audi A4 Engine Emission Parts

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Silicone Breather Hose

ES#2966836 - 034-101-3072 - Silicone Breather Hose - Connects the suction jet pump to the intake manifold - 034Motorsport - Audi Volkswagen

Connects the suction jet pump to the intake manifold Engine codes ATW & AWM

Brand:
034Motorsport - Corporate Logo
ES#:
2966836
Mfg#:
034-101-3072
In Stock
$21.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Pump

ES#3139060 - 06A959253E - Secondary Air Injection Pump - Keep your engine running efficiently - Hudson - Audi Volkswagen

Keep your engine running efficiently Engine codes ATW & AWM from VIN 8D-Y-100001, split is in the 2000 model year

Brand:
Hudson - Corporate Logo
ES#:
3139060
Mfg#:
06A959253E
Ships in 1-2 days
$230.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - (19mm)

ES#7858 - 06A129101D - Pressure Control Valve (PCV) - (19mm) - Located on the intake hose leading to the turbo inlet - Genuine Volkswagen Audi - Audi Volkswagen

Located on the intake hose leading to the turbo inlet Fits up to VIN 8E-3-500 000 - Split is in the 2003 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
7858
Mfg#:
06A129101D
Ships in 4 Business Days
6% off MSRP

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

$123.99

This product was last offered at the strikethrough price on
07-23-2026

$115.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Emissions Service Kit

ES#2878592 - 06F129101Pkit - Emissions Service Kit - Everything you need to service your PCV system - Vaico - Audi Volkswagen

Everything you need to service your PCV system We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2878592
Mfg#:
06F129101PKIT
In Stock
ON SALE!
$236.99

This product was last offered at the strikethrough price on
07-14-2026

$229.88 USD
Free Shipping
on orders $49 and up
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
$11.41 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Check Valve - Priced Each

ES#2598293 - 058905291K - Check Valve - Priced Each - Used in multiple locations in vacuum system - URO - Audi Volkswagen

Used in multiple locations in vacuum system 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2598293
Mfg#:
058905291K
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Oil Separator

ES#4818092 - 06H103464L - Secondary Oil Separator - Mounted to the side of the engine block - Bremmen Parts - Audi Volkswagen

Mounted to the side of the engine block 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818092
Mfg#:
06H103464L
Ships in 10 Business Days
Auto Notify
ON SALE! SAVE 21%
$31.99

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

$25.29 USD
Free Shipping
on orders $49 and up

Silicone Air Pump Hose

ES#2966838 - 034-104-2002 - Silicone Air Pump Hose - Connects the metal pipes in the air pump system - 034Motorsport - Audi Volkswagen

Connects the metal pipes in the air pump system

Brand:
034Motorsport - Corporate Logo
ES#:
2966838
Mfg#:
034-104-2002
Ships in 2 Business Days
$15.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#3183720 - 06E103547P - Pressure Control Valve (PCV) - Located beneath the intake manifold - Vaico - Audi

Located beneath the intake manifold We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3183720
Mfg#:
06E103547P
In Stock at Vendor
$314.99

This product was last offered at the strikethrough price on
02-13-2026

$224.99 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 4 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.

$239.99

This product was last offered at the strikethrough price on
07-25-2026

$219.99 USD
Free Shipping
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 For Our 25th Anniversary 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

Oxygen Sensor - Front Position

ES#2866474 - 078906265M - Oxygen Sensor - Front Position - Keep your engine running efficiently - Febi - Audi

Keep your engine running efficiently 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For engine code ATQ, fits left and right position

Brand:
Febi - Corporate Logo
ES#:
2866474
Mfg#:
078906265M
Ships on Oct 21, 2026
$104.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Pump Kit

ES#3647145 - 95560560101KT - Secondary Air Injection Pump Kit - Includes rubber mounts to secure your pump - Hamburg Tech - Audi Volkswagen Porsche

Includes rubber mounts to secure your pump We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
3647145
Mfg#:
95560560101KT
Ships in 1 Business Day
$206.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve (N249) - Priced Each

ES#12056 - 026906283J - Solenoid Valve (N249) - Priced Each - Controls actuation of the Combi Valve or Diverter Valve - Genuine Volkswagen Audi - Audi Volkswagen

Controls actuation of the Combi Valve or Diverter Valve

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
12056
Mfg#:
026906283J
Ships in 4 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.

$224.99

This product was last offered at the strikethrough price on
07-25-2026

$205.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump

ES#3188109 - 06E145100T - Vacuum Pump - Generates vacuum when under positive pressure - Pierburg - Audi

Generates vacuum when under positive pressure

Brand:
Pierburg - Corporate Logo
ES#:
3188109
Mfg#:
06E145100T
Ships in 1-2 days
$200.93 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4342719 - 06H103495AE - Pressure Control Valve (PCV) - Also referred to as the breather valve or oil separator - Febi - Audi

Also referred to as the breather valve or oil separator 2X Entries For Our 25th Anniversary 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:
Febi - Corporate Logo
ES#:
4342719
Mfg#:
06H103495AE
Ships on Oct 21, 2026
$99.99 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

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Manufacturer names and/or part numbers are used only for identification purposes.

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