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Volkswagen MK4 Engine Emission Parts

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Pressure Control Valve (PCV)

ES#2695593 - 028129101E - Pressure Control Valve (PCV) - Mounts on the driver side of the intake manifold - URO - Volkswagen

Mounts on the driver side of the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with ALH engine code only

Brand:
URO - Corporate Logo
ES#:
2695593
Mfg#:
028129101E
Ships in 1 Business Day
$13.99 USD
Free Shipping
on orders $49 and up
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3097721
Mfg#:
N1.50X051
In Stock
ON SALE! SAVE 30%
$5.99

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

$4.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover and Block Breather Adapters w/ -10 AN fittings

ES#2855704 - FM18TCBB - Valve Cover and Block Breather Adapters w/ -10 AN fittings - Replace plastic block connections with these alloy parts - Forge - Volkswagen

Replace plastic block connections with these alloy parts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
2855704
Mfg#:
FM18TCBB
Back Ordered
$80.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Tube

ES#2866151 - 06A103213F - Crankcase Breather Tube - Connects the oil filter adapter to the three-way valve housing - Febi - Audi Volkswagen

Connects the oil filter adapter to the three-way valve housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2866151
Mfg#:
06A103213F
In Stock at Vendor
$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#4730 - 06A906262BG - Oxygen Sensor - Keep your engine running efficiently, with a new O2 sensor - Bosch - Volkswagen

Keep your engine running efficiently, with a new O2 sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with AVH, AZG or BEV engine code only

Brand:
Bosch - Corporate Logo
ES#:
4730
Mfg#:
06A906262BG
In Stock at Vendor
$184.35

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

$161.46 USD
Free Shipping
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with manual transmission only

Brand:
Rein - Corporate Logo
ES#:
4858865
Mfg#:
8L0133817
In Stock at Vendor
$81.99

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

$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Allen Bolt - Priced Each

ES#466496 - N01470514 - Allen Bolt - Priced Each - Install new hardware with your new parts. M6x25 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x25 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
466496
Mfg#:
N01470514
Ships on Jun 8, 2026
21% off MSRP

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

$3.38

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

$2.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Emissions Service Kit

ES#2702959 - 06A103247KT2 - Emissions Service Kit - Restore your emissions hoses and clear codes - Assembled By ECS - Volkswagen

Restore your emissions hoses and clear codes affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with an AWP engine code up to production date 6.30.2003

Brand:
Assembled By ECS - Corporate Logo
ES#:
2702959
Mfg#:
06A103247KT2
Ships on Aug 10, 2026
Auto Notify
ON SALE!
$170.99

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

$156.51 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rubber Mount - Priced Each

ES#3194552 - 037133567F - Rubber Mount - Priced Each - Placed between the secondary air pump and mounting bracket - URO - Audi Volkswagen

Placed between the secondary air pump and mounting bracket affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with VIN up to 9M-X-999 999 only, split is in the 1999 model year

Brand:
URO - Corporate Logo
ES#:
3194552
Mfg#:
037133567F
In Stock
$2.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Valve (PCV)

ES#7771 - 035103245g - Breather Valve (PCV) - Stepped plastic valves that resides under intake manifold & attached to the engine block breather system - Genuine Volkswagen Audi - Audi Volkswagen

Stepped plastic valves that resides under intake manifold & attached to the engine block breather system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with a VIN from 1J-1-071 000, split is in model year 2001

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
7771
Mfg#:
035103245G
Ships in 2 Business Days
11% off MSRP

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

$43.99

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

$38.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Three-Way Valve Housing

ES#2812997 - 06A103247 - Three-Way Valve Housing - 'T' shaped connection below the intake manifold - Hamburg Tech - Audi Volkswagen

'T' shaped connection below the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with AWW or AWP engine codes, with production date up to 6/30/2003

Brand:
Hamburg Tech - Corporate Logo
ES#:
2812997
Mfg#:
06A103247
Ships in 1 Business Day
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Cooler Pipe

ES#275201 - 038131521E - EGR Cooler Pipe - Goes from the manifold to the cooler, no gaskets or hardware included - Genuine Volkswagen Audi - Volkswagen

Goes from the manifold to the cooler, no gaskets or hardware included affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with ALH engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275201
Mfg#:
038131521E
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.

$161.99

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

$150.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Emissions Suction Pump

ES#4714668 - 06A133751AK - Emissions Suction Pump - Located near the intake manifold - Kayser - Volkswagen

Located near the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles from the 2004 model year with AWP engine code only

Brand:
Kayser - Corporate Logo
ES#:
4714668
Mfg#:
06A133751AK
Back Ordered
$154.99

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

$150.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose

ES#3411446 - 0341013037 - Breather Hose - Block to intake manifold hose made of silicone - 034Motorsport - Volkswagen

Block to intake manifold hose made of silicone affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3411446
Mfg#:
0341013037
In Stock
$30.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#2836685 - 028129101E - Pressure Control Valve (PCV) - Mounts on the driver side of the intake manifold - Vaico - Volkswagen

Mounts on the driver side of the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with ALH engine code only

Brand:
Vaico - Corporate Logo
ES#:
2836685
Mfg#:
028129101E
In Stock
Limited Qty Sale
$32.00

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

$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Hose

ES#307368 - 1J0131128B - Secondary Air Hose - Intermediate pipe to airbox from air pump - Genuine Volkswagen Audi - Volkswagen

Intermediate pipe to airbox from air pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307368
Mfg#:
1J0131128B
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.

$154.99

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

$144.99 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 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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