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Volkswagen MK4 Engine Emission Parts

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ES#4839784 - 06A906262BG - Oxygen Sensor - Keep your engine running efficiently, with a new O2 sensor - URO - 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:
URO - Corporate Logo
ES#:
4839784
Mfg#:
06A906262BG
Ships in 1 Business Day
$65.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4818408 - 035103245A - Pressure Control Valve (PCV) - (19mm) - Located under the intake manifold - Bremmen Parts - Audi Volkswagen

Located under the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Up to Vin #4-042774, split is in model year 2004 except wagons, fits all Jetta wagons

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818408
Mfg#:
035103245A
In Stock
ON SALE! SAVE 26%
$10.99

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

$8.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#257303 - 035103245A - Bleeder Valve - Located under the intake manifold - Genuine Volkswagen Audi - Audi Volkswagen

Located under the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with a VIN up to 1J-1-070 999, split is in model year 2001

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
257303
Mfg#:
035103245A
In Stock at Vendor
$48.99

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

$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#248760 - 1K0906283A - Vacuum Solenoid Valve - Electrically controlled vacuum valve - Genuine Volkswagen Audi - Audi Volkswagen

Electrically controlled vacuum valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Used for exhaust flapper control

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
248760
Mfg#:
1K0906283A
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.

$50.99

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

$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4818431 - 06A129101D - Pressure Control Valve (PCV) - (19mm) - Located on the intake hose leading to the turbo inlet - Bremmen Parts - Audi Volkswagen

Located on the intake hose leading to the turbo inlet affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For 2002 model year vehicles only

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818431
Mfg#:
06A129101D
In Stock
ON SALE! SAVE 25%
$11.99

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

$8.97 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#269672 - 022133907 - Vacuum Reservoir - Holds vacuum for future use - Genuine Volkswagen Audi - Volkswagen

Holds vacuum for future use affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
269672
Mfg#:
022133907
Special Order: No Guaranteed ETA
7% off MSRP

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

$199.99

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

$186.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#271024 - 028129101E - Crankcase Vent Valve - Genuine Volkswagen Audi - Volkswagen

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

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
271024
Mfg#:
028129101E
Ships in 5 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.

$196.99

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

$183.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2804310 - 06A129101DKT1 - Pressure Control Valve (PCV) - (19mm) - Located on the intake hose leading to the turbo inlet. Includes hose clamps - Assembled By ECS - Audi Volkswagen

Located on the intake hose leading to the turbo inlet. Includes hose clamps affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For 2002 model year vehicles only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804310
Mfg#:
06A129101DKT1
In Stock
ON SALE! SAVE 22%
$21.19

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

$16.48 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1874203 - 06A103213BG - Breather Hose - From T fitting to hose connected to the valve cover. - Genuine Volkswagen Audi - Audi Volkswagen

From T fitting to hose connected to the valve cover. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1874203
Mfg#:
06A103213BG
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.

$193.99

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

$180.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#7941 - 06A103221BQ - "S" Shaped Breather Hose - Attaches to crankcase breather valve - Genuine Volkswagen Audi - Audi Volkswagen

Attaches to crankcase breather valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AWW or AWD engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
7941
Mfg#:
06A103221BQ
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.

$189.99

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

$177.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#258899 - 06A103221BR - Breather Hose - S Shaped - "S" shaped breather hose that is attached to pressure regulator valve, OEM part #'s: 06A 103 221BR or 06A 103 221E - Genuine Volkswagen Audi - Audi Volkswagen

"S" shaped breather hose that is attached to pressure regulator valve, OEM part #'s: 06A 103 221BR or 06A 103 221E affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AWP engine code from model year 2002 up to VIN 1J-44009 843, split is in model year 2004

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
258899
Mfg#:
06A103221BR
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.

$189.99

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

$177.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2749144 - 022131101E - Combi Valve - Common source for error codes - Pierburg - Audi Volkswagen

Common source for error codes affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pierburg - Corporate Logo
ES#:
2749144
Mfg#:
022131101E
In Stock
$175.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#307366 - 1J0131128 - Air Pump Intake Hose - Connects secondary air pump to airbox - Genuine Volkswagen Audi - Volkswagen

Connects secondary air pump to airbox affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
307366
Mfg#:
1J0131128
Ships in 2 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.

$188.99

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

$175.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#6513 - 06A103221an - Breather Hose - 3-way breather hose at sits on top of the valve cover - Genuine Volkswagen Audi - Audi Volkswagen

3-way breather hose at sits on top of the valve cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For models with AWP engine code - From the 2003 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
6513
Mfg#:
06A103221AN
Ships in 7 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.

$188.99

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

$175.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upgraded silicone breather hose kit with black hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AWW or AWP engine code with production date up to 06/30/2003 only

Brand:
Forge - Corporate Logo
ES#:
2684994
Mfg#:
FMBH18T-BLK
Ships in 3 Business Days
$175.66 USD
Free Shipping
on orders $49 and up
ES#2992762 - 028129717DKT - Intake Manifold Cleaning Kit - Clean out that clogged intake on your TDI - Assembled By ECS - Volkswagen

Clean out that clogged intake on your TDI affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with ALH engine code only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2992762
Mfg#:
028129717DKT
Ships in 10 Business Days
ON SALE!
$62.00

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

$56.34 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

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Manufacturer names and/or part numbers are used only for identification purposes.

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