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Volkswagen MK4 Engine Emission Parts

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Valve Control Solenoid (N249)

ES#248500 - 078906283A - Valve Control Solenoid (N249) - Valve used to control combi valve operation - Pierburg - Audi Volkswagen

Valve used to control combi valve operation affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pierburg - Corporate Logo
ES#:
248500
Mfg#:
078906283A
Ships on Jul 2, 2026
Auto Notify
$96.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Baffled Oil Catch Can System

ES#3187868 - 019138ecs01-01KT - ECS Tuning Baffled Oil Catch Can System - Everything needed to keep your intake tract clean and oil free! - ECS - Volkswagen

Everything needed to keep your intake tract clean and oil free! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3187868
Mfg#:
019138ECS01-01KT
Ships on Sep 2, 2026
ON SALE! SAVE 10%
$343.99

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

$309.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Universal Catch Can Drain System

ES#3698456 - 003779ECS11 - ECS Tuning Universal Catch Can Drain System - Make draining your ECS or Turner Catch Can simple with this comprehensive kit - ECS - Audi Volkswagen MINI

Make draining your ECS or Turner Catch Can simple with this comprehensive kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3698456
Mfg#:
003779ECS11
In Stock
ON SALE! SAVE 26%
$70.99

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

$52.52 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Hose - Outlet

ES#4818679 - 8L0133817 - Secondary Air Injection Hose - Outlet - Large pipe that is attached to the air pump and connecting pipe to the combi valve - Bremmen Parts - 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 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818679
Mfg#:
8L0133817
In Stock
ON SALE! SAVE 21%
$54.99

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

$43.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE Recirculating Billet Catch Can

ES#2794189 - IEDIYUU17 - IE Recirculating Billet Catch Can - Prevent crankcase oil fumes from filling your intake piping, turbo piping, intercooler, intake manifold, and breather system - Integrated Engineering - Audi Volkswagen

Prevent crankcase oil fumes from filling your intake piping, turbo piping, intercooler, intake manifold, and breather system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
*Universal Fitment - Custom Install Required - Does not include fittings, adapters, or hose ends*

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794189
Mfg#:
IEDIYUU17
Ships in 1 Business Day
$186.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Adapter

ES#269538 - 022115403R - Oil Filter Adapter - With an integrated oil separator - Genuine Volkswagen Audi - Audi Volkswagen

With an integrated oil separator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
269538
Mfg#:
022115403R
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.

$298.99

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

$278.99 USD
Free Shipping

Hex Bolt - Priced Each

ES#467458 - N10124408 - Hex Bolt - Priced Each - Install new hardware with your new parts. M6x20 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467458
Mfg#:
N10124408
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Suction Pump

ES#252639 - 058133753D - Suction Pump - Restore engine performance - Genuine Volkswagen Audi - Audi Volkswagen

Restore engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AWW or AWD engine codes only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
252639
Mfg#:
058133753D
In Stock
7% off MSRP

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

$91.65

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

$85.47 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4761007 - 034129101B - Pressure Control Valve (PCV) - Located on the turbo inlet pipe. 19mm - Rein - Audi Volkswagen

Located on the turbo inlet pipe. 19mm affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4761007
Mfg#:
034129101B
In Stock
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#1899473 - 1K0998262M - Oxygen Sensor - Located before the catalytic converter - Bosch - Audi Volkswagen

Located before the catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Fits vehicles from model years 02-05

Brand:
Bosch - Corporate Logo
ES#:
1899473
Mfg#:
1K0998262M
Ships in 3 Business Days
$201.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

O-Ring - Priced Each

ES#3524963 - N90521604 - O-Ring - Priced Each - Install new hardware with your new parts. 55x3 - Elring - Audi Volkswagen

Install new hardware with your new parts. 55x3 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Fits up to the 2003 model year, ALH engine codes

Brand:
Elring - Corporate Logo
ES#:
3524963
Mfg#:
N90521604
In Stock
$8.23

This product was last offered at the strikethrough price on
04-08-2026

$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#319087 - 1K0998262J - Oxygen Sensor - Located before the catalytic converter - Genuine Volkswagen Audi - Volkswagen

Located before the catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits the right manifold

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
319087
Mfg#:
1K0998262J
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.

$466.99

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

$434.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Intake Air Duct

ES#307352 - 1J0129684CB - Intake Air Duct - Pipe from MAF to throttle body - Genuine Volkswagen Audi - Volkswagen

Pipe from MAF to throttle body affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AZG, AVG, or BEV engine code from the 2002 model year only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307352
Mfg#:
1J0129684CB
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.

$462.99

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

$431.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Pump

ES#284127 - 078906601M - Secondary Air Injection Pump - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi Volkswagen

Keep your engine running efficiently affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284127
Mfg#:
078906601M
Ships in 1-2 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.

$857.99

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

$806.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap

ES#2803531 - 1J0201553A - Gas Cap - Replacement fuel tank cap for your vehicle. Tether not included. - Rein - Audi Volkswagen

Replacement fuel tank cap for your vehicle. Tether not included. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803531
Mfg#:
1J0201553A
In Stock at Vendor
$18.31

This product was last offered at the strikethrough price on
03-25-2026

$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Catch Can System

ES#3130050 - MS100125 - Universal Catch Can System - For a custom catch can setup - APR - Volkswagen

For a custom catch can setup 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#:
3130050
Mfg#:
MS100125
Ships in 5 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.

$431.99

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

$383.99 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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