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Audi B6 A4 Quattro 1.8T

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Audi B6 A4 Quattro 1.8T Engine Emission Parts

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Billet Aluminum Block Breather Adapter - 1.8T

ES#4147630 - 034-101-5002 - Billet Aluminum Block Breather Adapter - 1.8T - 1" Nipple, billet aluminum block breather adapter for a custom crankcase breather setup - 034Motorsport - Audi Volkswagen

1" Nipple, billet aluminum block breather adapter for a custom crankcase breather setup affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4147630
Mfg#:
034-101-5002
In Stock
ON SALE! SAVE 10%
$25.00

This product was last offered at the strikethrough price on
06-28-2026

$22.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap

ES#259455 - 8E0201553E - Gas Cap - Replace your leaking cap or the one left at the pump - Genuine Volkswagen Audi - Audi

Replace your leaking cap or the one left at the pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
259455
Mfg#:
8E0201553E
In Stock
ON SALE!
$64.99

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

$60.85 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Connecting Pipe

ES#280068 - 06B133817S - Connecting Pipe - Connects the secondary air pump to the lower hard pipe - Genuine Volkswagen Audi - Audi

Connects the secondary air pump to the lower hard pipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280068
Mfg#:
06B133817S
In Stock
ON SALE!
$128.99

This product was last offered at the strikethrough price on
06-15-2026

$116.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Suction Pump

ES#2772076 - 058133753D - Suction Pump - Restore engine performance - URO - Audi Volkswagen

Restore engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2772076
Mfg#:
058133753D
In Stock
$28.42

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

$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#4352395 - 06E103464D - Pressure Control Valve (PCV) - Located beneath the intake manifold. - URO - Audi

Located beneath the intake manifold. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4352395
Mfg#:
06E103464D
In Stock
ON SALE!
$160.99

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

$152.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve

ES#2993025 - 079131101AR - EGR 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#:
2993025
Mfg#:
079131101AR
Ships in 3 Business Days
8% off MSRP

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

$483.99

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

$442.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Suction Pump

ES#2803814 - 058133753D - Suction Pump - Restore engine performance - Rein - Audi Volkswagen

Restore engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803814
Mfg#:
058133753D
In Stock
ON SALE!
$29.99

This product was last offered at the strikethrough price on
06-29-2026

$28.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Innovate LC-2 Wideband O2 Controller Kit

ES#4809696 - 38770 - Innovate LC-2 Wideband O2 Controller Kit - Includes Lambda cable & 8-foot sensor cable. - Innovate Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Includes Lambda cable & 8-foot sensor cable. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Innovate Motorsports - Corporate Logo
ES#:
4809696
Mfg#:
38770
In Stock at Vendor
$212.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Purge Valve

ES#4818590 - 1C0906517A - Purge Valve - Common cure for DTC P0441 - Bremmen Parts - Audi Volkswagen Porsche

Common cure for DTC P0441 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818590
Mfg#:
1C0906517A
Ships on Aug 10, 2026
Auto Notify
ON SALE! SAVE 21%
$37.99

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

$30.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#319085 - 1K0998262D - Oxygen Sensor - Priced Each - 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#:
319085
Mfg#:
1K0998262D
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.

$449.99

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

$419.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - Priced Each

ES#2602137 - 06B103245 - Pressure Control Valve (PCV) - Priced Each - Located under the intake manifold - Vaico Q+ - Audi Volkswagen

Located under the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From VIN 8E-3-040001 up to VIN 8E-3-500000, splits are in the 2003 model year

Brand:
Vaico Q+ - Corporate Logo
ES#:
2602137
Mfg#:
06B103245
In Stock at Vendor
$44.99

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

$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silicone Crankcase Breather Hose

ES#2966833 - 034-101-3027 - Silicone Crankcase Breather Hose - Replaces the T-hose, Elbow tube, and breather pipe - 034Motorsport - Audi Volkswagen

Replaces the T-hose, Elbow tube, and breather pipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to VIN 8E-3-500000, splits is in the 2003 model year

Brand:
034Motorsport - Corporate Logo
ES#:
2966833
Mfg#:
034-101-3027
In Stock
ON SALE! SAVE 10%
$108.00

This product was last offered at the strikethrough price on
06-28-2026

$97.20 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump

ES#2878582 - 06E145100T - Vacuum Pump - Generates vacuum when under positive pressure - Vaico - Audi

Generates vacuum when under positive pressure 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#:
2878582
Mfg#:
06E145100T
In Stock at Vendor
$390.99

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

$379.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Intake System Vacuum Solenoid

ES#2663732 - 026906283J - Intake System Vacuum Solenoid - Controls actuation of the Combi Valve or Diverter Valve - Genuine Volkswagen Audi - Audi Volkswagen

Controls actuation of the Combi Valve or Diverter Valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2663732
Mfg#:
026906283J
Ships in 5 Business Days
9% off MSRP

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

$208.99

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

$189.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Purge Valve

ES#4376432 - 1C0 906 517A - Purge Valve - Common cure for DTC P0441 - URO - Audi Volkswagen

Common cure for DTC P0441 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4376432
Mfg#:
1C0 906 517A
Ships in 1 Business Day
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump

ES#3714097 - 06D145100H - Vacuum Pump - Generates vacuum when under positive pressure - Rein - Audi Volkswagen

Generates vacuum when under positive pressure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3714097
Mfg#:
06D145100H
Back Ordered
ON SALE!
$397.99

This product was last offered at the strikethrough price on
06-29-2026

$378.09 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.

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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