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Volkswagen MK4 Engine Emission Parts

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Oxygen Sensor - Priced Each

ES#2712768 - 078906265AA - Oxygen Sensor - Priced Each - Located behind the catalytic converter - Vemo - Audi Volkswagen

Located behind the catalytic converter For vehicles with AWD engine code only

Brand:
Vemo - Corporate Logo
ES#:
2712768
Mfg#:
078906265AA
In Stock at Vendor
$141.67 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Vent Tube

ES#1874204 - 06A103213BK - Crankcase Vent Tube - Connects to the three way breather on the side of the valve cover - Genuine Volkswagen Audi - Volkswagen

Connects to the three way breather on the side of the valve cover For vehicles with a VIN from 1J-4-009,844 split is in the 2004 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1874204
Mfg#:
06A103213BK
Ships in 1 day
7% off MSRP

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

$146.99

This product was last offered at the strikethrough price on
07-28-2026

$136.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Tube

ES#7934 - 06A103213F - Crankcase Breather Tube - Connects the oil filter adapter to the three-way valve housing - Genuine Volkswagen Audi - Audi Volkswagen

Connects the oil filter adapter to the three-way valve housing

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
7934
Mfg#:
06A103213F
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.

$146.99

This product was last offered at the strikethrough price on
07-28-2026

$136.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Air Pump Hose

ES#3450037 - 06A131127M - Air Pump Hose - Hose that runs from the secondary air pump to the Combi Valve - Kayser - Volkswagen

Hose that runs from the secondary air pump to the Combi Valve For vehicles with an AZG, AVH, BBW, or BEV engine code only

Brand:
Kayser - Corporate Logo
ES#:
3450037
Mfg#:
06A131127M
Ships in 4 Business Days
ON SALE!
$35.99

This product was last offered at the strikethrough price on
06-25-2026

$34.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Adapter For Combi Valve

ES#4829 - 058131817 - Adapter For Combi Valve - Allows the combi valve to be mounted on the cylinder head - Genuine Volkswagen Audi - Audi Volkswagen

Allows the combi valve to be mounted on the cylinder head

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4829
Mfg#:
058131817
Ships in 1 day
6% off MSRP

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

$144.99

This product was last offered at the strikethrough price on
07-28-2026

$135.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Autobahn Autoworx Silicone PCV Hose Upgrade Kit

ES#4428746 - AUTMK4006 - Autobahn Autoworx Silicone PCV Hose Upgrade Kit - Eliminate all the fail prone hoses and plastic parts with this kit! - Autobahn Autoworx - Audi Volkswagen

Eliminate all the fail prone hoses and plastic parts with this kit! For vehicles with AWW or AWP engine code only

Brand:
Autobahn Autoworx - Corporate Logo
ES#:
4428746
Mfg#:
AUTMK4006
Ships in 3 Business Days
Starting at $135.00 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#2580510 - 06A906262BM - Oxygen Sensor - Keep your engine running efficiently, with a new O2 sensor - Bosch - Volkswagen

Keep your engine running efficiently, with a new O2 sensor 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with BBW engine code only

Brand:
Bosch - Corporate Logo
ES#:
2580510
Mfg#:
06A906262BM
In Stock at Vendor
$136.99

This product was last offered at the strikethrough price on
04-09-2026

$126.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) Repair Kit

ES#3648447 - 06a129101dkt2KT - Pressure Control Valve (PCV) Repair Kit - Located under the intake manifold. Includes hose clamps - Genuine Volkswagen Audi - Audi Volkswagen

Located under the intake manifold. Includes hose clamps For 2002 model year vehicles only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648447
Mfg#:
06A129101DKT2KT
Ships in 3 Business Days
$126.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - (25mm)

ES#1876828 - 06A129101F - Pressure Control Valve (PCV) - (25mm) - Located on the intake hose leading to the turbo inlet - Kayser - Audi Volkswagen

Located on the intake hose leading to the turbo inlet For vehicles from the 2003 model year

Brand:
Kayser - Corporate Logo
ES#:
1876828
Mfg#:
06A129101F
Ships on Jan 20, 2027
$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Reservoir

ES#258889 - 06A131541A - Vacuum Reservoir - Located on the valve cover - Genuine Volkswagen Audi - Audi Volkswagen

Located on the valve cover

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
258889
Mfg#:
06A131541A
Special Order: No Guaranteed ETA
Auto Notify
$125.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

"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 For Our 25th Anniversary 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
ON SALE!
$21.99

This product was last offered at the strikethrough price on
06-25-2026

$20.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#891 - 06A906262Q REAR - Oxygen Sensor - Priced Each - Keep your engine running efficiently, restore MPG, and clear check engine lights - Vemo - Volkswagen

Keep your engine running efficiently, restore MPG, and clear check engine lights

Brand:
Vemo - Corporate Logo
ES#:
891
Mfg#:
06A906262Q REAR
Ships on Nov 20, 2026
$122.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Brake Vacuum Pipe With Check Valve

ES#308105 - 1J0612041AB - Brake Vacuum Pipe With Check Valve - Hard vacuum pipe that goes to brake booster, comes with check valve - Genuine Volkswagen Audi - Volkswagen

Hard vacuum pipe that goes to brake booster, comes with check valve

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
308105
Mfg#:
1J0612041AB
In Stock at Vendor
10% off MSRP

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

$134.99

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

$121.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SAI/EGR Valve Adapter Gasket - Priced Each

ES#4828 - 078131120M - SAI/EGR Valve Adapter Gasket - Priced Each - Seals the combi valve adapter to the cylinder head - Genuine Volkswagen Audi - Audi Volkswagen

Seals the combi valve adapter to the cylinder head

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4828
Mfg#:
078131120M
In Stock
16% off MSRP

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

$4.61

This product was last offered at the strikethrough price on
07-28-2026

$3.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#279189 - 06A103465 - Pressure Control Valve (PCV) - Located on top of the valve cover - Genuine Volkswagen Audi - Volkswagen

Located on top of the valve cover For vehicles with AEG engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279189
Mfg#:
06A103465
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.

$128.99

This product was last offered at the strikethrough price on
07-28-2026

$119.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Wrench 3/8" drive

ES#2949705 - SLY88750B - Oxygen Sensor Wrench 3/8" drive - O2 Sensor Socket - Schley - Audi Volkswagen Mercedes Benz MINI

O2 Sensor Socket

Brand:
Schley - Corporate Logo
ES#:
2949705
Mfg#:
SLY88750B
Ships on Aug 13, 2026
$59.99 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

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

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