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Audi A4 Engine Emission Parts

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Vent Tube

ES#280186 - 06C103221F - Vent Tube - Keep your engine running correctly - Genuine Volkswagen Audi - Audi

Keep your engine running correctly

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280186
Mfg#:
06C103221F
Ships in 9 Business Days
22% off MSRP

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

$103.34

This product was last offered at the strikethrough price on
09-10-2026

$80.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump Gasket

ES#3046090 - 06H103121J - Vacuum Pump Gasket - Recommended to be replaced when replacing vacuum pump. - Victor Reinz - Audi Volkswagen

Recommended to be replaced when replacing vacuum pump.

Brand:
Victor Reinz - Corporate Logo
ES#:
3046090
Mfg#:
06H103121J
Ships in 1-2 days
$13.99

This product was last offered at the strikethrough price on
05-29-2026

$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BFI FSI CrankCase Breather Adapter W/ Twin -8 To Flare Fittings

ES#5426248 - EBFI7001220C - BFI FSI CrankCase Breather Adapter W/ Twin -8 To Flare Fittings - This simple machined piece gives a clean and OEM look to your engine bay. - Black Forest Industries - Audi Volkswagen

This simple machined piece gives a clean and OEM look to your engine bay. From production date 12/17/2005

Brand:
Black Forest Industries - Corporate Logo
ES#:
5426248
Mfg#:
EBFI7001220C
Ships on Oct 5, 2026
$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV O-Ring

ES#280865 - 06E133148A - PCV O-Ring - Seals the PCV valve to the intake manifold - Genuine Volkswagen Audi - Audi

Seals the PCV valve to the intake manifold

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280865
Mfg#:
06E133148A
Ships in 3 Business Days
13% off MSRP

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

$22.99

This product was last offered at the strikethrough price on
09-10-2026

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Check Valve

ES#1895504 - 433862117 - Check Valve - Vacuum Non Return Valve - Kayser - Audi

Vacuum Non Return Valve

Brand:
Kayser - Corporate Logo
ES#:
1895504
Mfg#:
433862117
Ships in 1-2 days
$16.99

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

$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Catch Can Mounting Bracket (straight)

ES#3479288 - IEDIYUU1-7 - Catch Can Mounting Bracket (straight) - To make your custom install as easy as possible, IE offers stainless steel catch can mounting brackets - Integrated Engineering - Audi Volkswagen

To make your custom install as easy as possible, IE offers stainless steel catch can mounting brackets Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3479288
Mfg#:
IEDIYUU1-7
Back Ordered
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Combi Valve Inlet Hose

ES#4615941 - 06B133784R - Combi Valve Inlet Hose - Connects combi valve to air pump hose - URO - Audi Volkswagen

Connects combi valve to air pump hose 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4615941
Mfg#:
06B133784R
Ships in 2 Business Days
$26.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Gasket

ES#281352 - 06H103517D - Oil Separator Gasket - Seal between the oil separator and the engine block - Genuine Volkswagen Audi - Audi

Seal between the oil separator and the engine block

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281352
Mfg#:
06H103517D
Ships in 3 Business Days
13% off MSRP

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

$29.99

This product was last offered at the strikethrough price on
09-10-2026

$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Oxygen Sensor Bung - Priced Each

ES#5051 - ATP-FLS-022 - Universal Oxygen Sensor Bung - Priced Each - Stainless steel weld-in nut for any O2 sensor - ATP - Audi BMW Volkswagen

Stainless steel weld-in nut for any O2 sensor

Brand:
ATP - Corporate Logo
ES#:
5051
Mfg#:
ATP-FLS-022
Ships in 7 Business Days
$12.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Hose - Inlet

ES#2918548 - 058133817H - Secondary Air Injection Hose - Inlet - Connects the secondary air pump to the air box - Vaico Q+ - Audi Volkswagen

Connects the secondary air pump to the air box Engine codes ATW & AWM

Brand:
Vaico Q+ - Corporate Logo
ES#:
2918548
Mfg#:
058133817H
Special Order: No Guaranteed ETA
$75.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - (19mm)

ES#2813013 - 06A129101D - Pressure Control Valve (PCV) - (19mm) - Located on the intake hose leading to the turbo inlet - Hamburg Tech - Audi Volkswagen

Located on the intake hose leading to the turbo inlet We Price Match - Give Us A Call or Chat!
Engine code AWM

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813013
Mfg#:
06A129101D
In Stock
ON SALE! SAVE 10%
$11.99

This product was last offered at the strikethrough price on
08-26-2026

$10.75 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Three-Way Valve Housing

ES#3437197 - 06A103247 - Three-Way Valve Housing - 'T' shaped connection below the intake manifold - Rein - Audi Volkswagen

'T' shaped connection below the intake manifold 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3437197
Mfg#:
06A103247
In Stock
ON SALE!
$7.13

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

$6.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Locking Gas Cap W/Keys

ES#2568145 - 191201551A - Locking Gas Cap W/Keys - Keep your fuel to yourself. - Blau - Audi Volkswagen

Keep your fuel to yourself. Model year 1996 to 1998

Brand:
Blau - Corporate Logo
ES#:
2568145
Mfg#:
191201551A
Ships in 1-2 days
$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Control Line

ES#450433 - 8K0201933M - Vacuum Control Line - Keep your vacuum system in check - Genuine Volkswagen Audi - Audi

Keep your vacuum system in check

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450433
Mfg#:
8K0201933M
Back Ordered
14% off MSRP

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

$42.99

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

$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV Breather Hose

ES#3236120 - 74711135 - PCV Breather Hose - Connects the PCV valve to intake manifold - Gates - Audi Volkswagen

Connects the PCV valve to intake manifold

Brand:
Gates - Corporate Logo
ES#:
3236120
Mfg#:
74711135
Ships on Sep 30, 2026
$72.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV Elbow Hose

ES#2806315 - 06L133514E - PCV Elbow Hose - A hose that connects the PCV to the solenoid line - Genuine Volkswagen Audi - Audi

A hose that connects the PCV to the solenoid line For vehicles with CYMC engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2806315
Mfg#:
06L133514E
Ships in 3 Business Days
14% off MSRP

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

$20.99

This product was last offered at the strikethrough price on
09-10-2026

$17.99 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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