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Volkswagen MK4 Engine Emission Parts

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Combi Valve

ES#279371 - 06A131351D - Combi Valve - Also known as the Secondary Air Injection Valve - Genuine Volkswagen Audi - Volkswagen

Also known as the Secondary Air Injection Valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with an AZG, AVH, BBW, or BEV engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279371
Mfg#:
06A131351D
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.

$254.99

This product was last offered at the strikethrough price on
06-05-2026

$237.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Universal Oil Catch Can - AN Fittings

ES#4487795 - MS100218 - APR Universal Oil Catch Can - AN Fittings - Universal/Service part for APR's MS100199 full catch can system - APR - Audi Volkswagen Porsche

Universal/Service part for APR's MS100199 full catch can system Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
4487795
Mfg#:
MS100218
Ships on Jul 1, 2026
11% off MSRP

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

$264.99

This product was last offered at the strikethrough price on
06-05-2026

$234.99 USD
Free Shipping
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with VIN from 1J-Y-000 001 only, 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) - (25mm)

Located on the intake hose leading to the turbo inlet affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles from the 2003 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
7845
Mfg#:
06A129101F
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.

$123.99

This product was last offered at the strikethrough price on
02-26-2026

$114.99 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For 2002 model year vehicles only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
7858
Mfg#:
06A129101D
Ships in 3 Business 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.

$123.99

This product was last offered at the strikethrough price on
06-01-2026

$114.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Breather Hose

ES#3419608 - 034-101-3035 - Silicone Breather Hose - Reinforced silicone 1.8T lower block breather hose to replace the crumbling factory plastic and rubber lower breather hoses - 034Motorsport - Audi Volkswagen

Reinforced silicone 1.8T lower block breather hose to replace the crumbling factory plastic and rubber lower breather hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AWW or AWP engine codes, with production date up to 6/30/2003

Brand:
034Motorsport - Corporate Logo
ES#:
3419608
Mfg#:
034-101-3035
Ships in 2 Business Days
$114.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Connecting Pipe OE# 06A133782D

ES#3172449 - 06A133782D - Connecting Pipe OE# 06A133782D - Vacuum system pipe found atop the intake manifold - Vaico - Audi Volkswagen

Vacuum system pipe found atop the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3172449
Mfg#:
06A133782D
In Stock at Vendor
$55.99

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

$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Connecting Pipe Kit

ES#251815 - COMBIPIPEKIT - Connecting Pipe Kit - Includes both hoses that run from air pump to combi valve - Genuine Volkswagen Audi - Volkswagen

Includes both hoses that run from air pump to combi valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
251815
Mfg#:
COMBIPIPEKIT
Ships on Nov 27, 2026
$212.99

This product was last offered at the strikethrough price on
06-01-2026

$211.99 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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

Vacuum Pump Sealing Gasket

ES#2199 - 038145345 - Vacuum Pump Sealing Gasket - Recommended with every timing belt change - Genuine Volkswagen Audi - Volkswagen

Recommended with every timing belt change affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2199
Mfg#:
038145345
In Stock
29% off MSRP

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

$12.62

This product was last offered at the strikethrough price on
06-05-2026

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

Solenoid Valve

ES#274850 - 037906283D - Solenoid Valve - Converter for exhaust recirculation (EGR) valve - Genuine Volkswagen Audi - Volkswagen

Converter for exhaust recirculation (EGR) valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with BEW engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
274850
Mfg#:
037906283D
Special Order: No Guaranteed ETA
8% off MSRP

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

$223.32

This product was last offered at the strikethrough price on
06-05-2026

$205.90 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Shut-off Valve

ES#1039232 - 06A131102H - Shut-off Valve - Also known as the 'combi valve' - Genuine Volkswagen Audi - Audi Volkswagen

Also known as the 'combi valve' affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1039232
Mfg#:
06A131102H
Ships in 7 Business Days
$204.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EGR Connecting Pipe

ES#275200 - 038131521CC - EGR Connecting Pipe - Connects regulating flap to cylinder head - Genuine Volkswagen Audi - Volkswagen

Connects regulating flap to cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with BEW engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275200
Mfg#:
038131521CC
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.

$218.99

This product was last offered at the strikethrough price on
06-05-2026

$203.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#2538327 - 028129101EKT - Pressure Control Valve (PCV) - Mounts on the driver side of the intake manifold - Genuine Volkswagen Audi - Volkswagen

Mounts on the driver side of the intake manifold 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#:
2538327
Mfg#:
028129101EKT
Ships in 5 Business Days
$202.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Connecting Pipe

ES#251814 - 06A133817Q - Connecting Pipe - Small pipe that is attached to combi valve and connecting pipe to the air pump - Genuine Volkswagen Audi - Audi Volkswagen

Small pipe that is attached to combi valve and connecting pipe to the air pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
251814
Mfg#:
06A133817Q
Ships in 3 Business 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.

$108.99

This product was last offered at the strikethrough price on
06-01-2026

$100.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Emissions Service Kit

ES#2793803 - 06A103247KT5 - Emissions Service Kit - Featuring ECS silicone upgraded PCV hoses - Assembled By ECS - Volkswagen

Featuring ECS silicone upgraded PCV hoses 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#:
2793803
Mfg#:
06A103247KT5
Back Ordered
Auto Notify
ON SALE! SAVE 25%
$263.99

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

$198.93 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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