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Volkswagen MK4 Engine Emission Parts

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"S" Shaped Breather Hose

ES#4045288 - 06A103221BQ - "S" Shaped Breather Hose - Attaches to crankcase breather valve - Rein - Audi Volkswagen

Attaches to crankcase breather valve 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with AWW or AWD engine code only

Brand:
Rein - Corporate Logo
ES#:
4045288
Mfg#:
06A103221BQ
In Stock
Limited Qty Sale
$21.99

This product was last offered at the strikethrough price on
09-14-2026

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

EGR Valve Gasket - Priced Each

ES#283692 - 078131120K - EGR Valve Gasket - Priced Each - Ensure a proper seal - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283692
Mfg#:
078131120K
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.

$14.99

This product was last offered at the strikethrough price on
09-30-2026

$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Connecting Pipe

ES#3234780 - 06A133817Q - Connecting Pipe - Small pipe that is attached to combi valve and connecting pipe to the air pump - Gates - Audi Volkswagen

Small pipe that is attached to combi valve and connecting pipe to the air pump

Brand:
Gates - Corporate Logo
ES#:
3234780
Mfg#:
06A133817Q
Ships on Oct 21, 2026
$96.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Shut-Off Valve

ES#4985 - 06A131102F - Shut-Off Valve - Also known as the 'combi valve' - Pierburg - Audi Volkswagen

Also known as the 'combi valve'

Brand:
Pierburg - Corporate Logo
ES#:
4985
Mfg#:
06A131102F
Special Order: No Guaranteed ETA
$94.85 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - (25mm)

ES#4743014 - 06A129101F - Pressure Control Valve (PCV) - (25mm) - Located on the intake hose leading to the turbo inlet - Bremmen Parts - Audi Volkswagen

Located on the intake hose leading to the turbo inlet 10X Entries Into Our F80 M3 Sweepstakes

For vehicles from the 2003 model year

Brand:
Bremmen Parts - Corporate Logo
ES#:
4743014
Mfg#:
06A129101F
Ships on Jan 8, 2027
ON SALE! SAVE 21%
$58.99

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

$46.50 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Cooler Pipe Hardware Kit

ES#1831790 - EGRPIPEHW - EGR Cooler Pipe Hardware Kit - Includes everthing you need to install your EGR cooler pipe; two gaskets, two nuts, and two bolts - Genuine Volkswagen Audi - Volkswagen

Includes everthing you need to install your EGR cooler pipe; two gaskets, two nuts, and two bolts

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1831790
Mfg#:
EGRPIPEHW
In Stock
$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hose Clamp - Priced Each

ES#263953 - N10258101 - Hose Clamp - Priced Each - Install new clamps to stay leak free. 23-35x9x.5 - Genuine Volkswagen Audi - Audi Volkswagen

Install new clamps to stay leak free. 23-35x9x.5 For vehicles with ALH engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
263953
Mfg#:
N10258101
In Stock
3% off MSRP

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

$7.10

This product was last offered at the strikethrough price on
07-15-2026

$6.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Brake Vacuum Pipe With Check Valve

ES#3154051 - 1J0612041AB - Brake Vacuum Pipe With Check Valve - Hard vacuum pipe that goes to brake booster, comes with check valve - Bremmen Parts - Volkswagen

Hard vacuum pipe that goes to brake booster, comes with check valve 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
3154051
Mfg#:
1J0612041AB
In Stock
ON SALE! SAVE 15%
$34.99

This product was last offered at the strikethrough price on
09-16-2026

$29.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#2598388 - 06A906262Q - Oxygen Sensor - Priced Each - Keep your engine running efficiently, restore MPG, and clear check engine lights - Vemo - Audi Volkswagen

Keep your engine running efficiently, restore MPG, and clear check engine lights For vehicles with AWD engine code only

Brand:
Vemo - Corporate Logo
ES#:
2598388
Mfg#:
06A906262Q
Special Order: No Guaranteed ETA
$88.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Combi Valve

ES#3604903 - 06A131351H - Combi Valve - Also known as the Secondary Air Injection Valve - Pierburg - Volkswagen

Also known as the Secondary Air Injection Valve For vehicles with AEG engine code only

Brand:
Pierburg - Corporate Logo
ES#:
3604903
Mfg#:
06A131351H
Ships in 1-2 days
$88.73 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!
For vehicles with AWD, AWW or AWP engine codes, with production date up to 6/30/2003

Brand:
Rein - Corporate Logo
ES#:
3437197
Mfg#:
06A103247
Ships in 2 Business Days
$7.13 USD
Free Shipping
on orders $49 and up
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!
For 2002 model year vehicles only

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813013
Mfg#:
06A129101D
In Stock
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Plug

ES#466615 - N0160243 - Plug - Oil filter adapter upper plug. M10x1 - Genuine Volkswagen Audi - Audi Volkswagen

Oil filter adapter upper plug. M10x1

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
466615
Mfg#:
N0160243
Ships in 1-2 days
34% off MSRP

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

$9.08

This product was last offered at the strikethrough price on
09-30-2026

$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - (19mm)

ES#3462921 - 06A129101D - Pressure Control Valve (PCV) - (19mm) - Located on the intake hose leading to the turbo inlet - Kayser - Audi Volkswagen

Located on the intake hose leading to the turbo inlet For 2002 model year vehicles only

Brand:
Kayser - Corporate Logo
ES#:
3462921
Mfg#:
06A129101D
Back Ordered
$41.73 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Gasket

ES#4034829 - 069131547D - EGR Valve Gasket - Gasket from EGR valve to pipe - Elring - Volkswagen

Gasket from EGR valve to pipe 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4034829
Mfg#:
069131547D
In Stock
$4.99

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

$4.17 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Hose - Outlet

ES#4858865 - 8L0133817 - Secondary Air Injection Hose - Outlet - Large pipe that is attached to the air pump and connecting pipe to the combi valve - Rein - Audi Volkswagen

Large pipe that is attached to the air pump and connecting pipe to the combi valve 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with manual transmission only

Brand:
Rein - Corporate Logo
ES#:
4858865
Mfg#:
8L0133817
Ships in 4 Business Days
$81.99

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

$80.99 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 Volkswagen

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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