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Audi A4 Engine Emission Parts

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Breather Hose Elbow

ES#279951 - 06B103221M - Breather Hose Elbow - Connects the pressure regulator to the hard breather tube - Genuine Volkswagen Audi - Audi

Connects the pressure regulator to the hard breather tube affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From VIN 8E-4-000001, split is in the 2004 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279951
Mfg#:
06B103221M
In Stock at Vendor
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Adapter Gasket

ES#283691 - 078131120E - EGR Valve Adapter Gasket - Gasket between adapter and cylinder head - Genuine Volkswagen Audi - Audi

Gasket between adapter and cylinder head affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283691
Mfg#:
078131120E
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.

$14.99

This product was last offered at the strikethrough price on
06-07-2026

$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rubber Mount - Priced Each

ES#279478 - 06A133567F - Rubber Mount - Priced Each - Secures the secondary air injection pump to the bracket - Genuine Volkswagen Audi - Audi Volkswagen

Secures the secondary air injection pump to the bracket affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279478
Mfg#:
06A133567F
Ships in 2 Business Days
13% off MSRP

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

$15.99

This product was last offered at the strikethrough price on
06-07-2026

$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose Elbow

ES#4883914 - 06A103213AM - Breather Hose Elbow - Connects the oil filter adapter to the hard breather tube - Rein - Audi Volkswagen

Connects the oil filter adapter to the hard breather tube 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#:
4883914
Mfg#:
06A103213AM
Back Ordered
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve Gasket

ES#3438751 - 06F103483E - Pressure Control Valve Gasket - Stop leaks by replacing your old gasket when servicing your PCV system - Victor Reinz - Audi Volkswagen

Stop leaks by replacing your old gasket when servicing your PCV system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
3438751
Mfg#:
06F103483E
In Stock at Vendor
$13.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leak Detection Pump Filter With Vent Tube

ES#3462935 - 8K0201997AL - Leak Detection Pump Filter With Vent Tube - Vent tube assembly with LDP filter - Kayser - Audi

Vent tube assembly with LDP filter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Kayser - Corporate Logo
ES#:
3462935
Mfg#:
8K0201997AL
Ships in 1 day
$42.00

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

$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#2643210 - 06F129101F - Pressure Control Valve (PCV) - Also called the "breather valve" or "oil separator" - OE Aftermarket - Audi Volkswagen

Also called the "breather valve" or "oil separator" affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to production date 12/16/2005

Brand:
OE Aftermarket - Corporate Logo
ES#:
2643210
Mfg#:
06F129101F
Ships in 1 day
$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Tube

ES#3188720 - 46066 - Crankcase Breather Tube - Connects the breather assembly to the three-way valve housing - Dorman - Audi Volkswagen

Connects the breather assembly to the three-way valve housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Dorman - Corporate Logo
ES#:
3188720
Mfg#:
46066
Ships in 4 Business Days
$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Reduction hose

ES#277642 - 058133370A - Reduction hose - Keep your engine running smooth - Genuine Volkswagen Audi - Audi

Keep your engine running smooth affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Engine code ATW & AWM only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
277642
Mfg#:
058133370A
Ships in 1 day
9% off MSRP

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

$43.99

This product was last offered at the strikethrough price on
06-07-2026

$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#2618770 - 06F129101N - Pressure Control Valve (PCV) - Also called the "breather valve" or "oil separator" - MTC - Audi Volkswagen

Also called the "breather valve" or "oil separator" affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Up to production date 12/16/2005

Brand:
MTC - Corporate Logo
ES#:
2618770
Mfg#:
06F129101N
Ships in 9 Business Days
$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose Service Kit

ES#5942 - 058198298 - Breather Hose Service Kit - Replacement hoses for common leaks - Assembled By ECS - Audi Volkswagen

Replacement hoses for common leaks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Engine codes AEB & ATW

Brand:
Assembled By ECS - Corporate Logo
ES#:
5942
Mfg#:
058198298
Ships on Aug 10, 2026
Auto Notify
ON SALE!
$39.99

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

$39.76 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bleeder Valve

ES#3462911 - 035103245A - Bleeder Valve - Located under the intake manifold - Kayser - Audi Volkswagen

Located under the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Kayser - Corporate Logo
ES#:
3462911
Mfg#:
035103245A
Ships in 1 day
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Combi Valve Inlet Hose

ES#280066 - 06B133784R - Combi Valve Inlet Hose - Connects combi valve to air pump hose - Genuine Volkswagen Audi - Audi Volkswagen

Connects combi valve to air pump hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280066
Mfg#:
06B133784R
Ships in 2 Business Days
10% off MSRP

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

$41.99

This product was last offered at the strikethrough price on
06-07-2026

$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Intake Air Pump Hose

ES#3412033 - 078133817P - Intake Air Pump Hose - Connects the air pump to the combi valve connection pipe - Hudson - Audi Volkswagen

Connects the air pump to the combi valve connection pipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with VIN from 3B-X-130 000 only, split is in 1999 model year

Brand:
Hudson - Corporate Logo
ES#:
3412033
Mfg#:
078133817P
Ships in 1 day
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose

ES#4138712 - 06B103224C - Breather Hose - Connects to the breather valve under the intake manifold - URO - Audi Volkswagen

Connects to the breather valve under the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
From VIN 8E-3-040001 up to VIN 8E-3-500000, splits are in the 2003 model year

Brand:
URO - Corporate Logo
ES#:
4138712
Mfg#:
06B103224C
Ships in 1 Business Day
$9.00

This product was last offered at the strikethrough price on
12-20-2025

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

Retaining Spring - Priced Each

ES#7989 - 037121142A - Retaining Spring - Priced Each - Keep your lines and hoses secure - Genuine Volkswagen Audi - Audi Volkswagen

Keep your lines and hoses secure affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Used to retain vent hose on crankcase breather assembly

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
7989
Mfg#:
037121142A
Ships in 2 Business Days
14% off MSRP

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

$6.99

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

$5.99 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 Audi

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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