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Audi A4 Engine Emission Parts

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Purge Valve

Common fix for error code DTC#P0441

Brand:
Hudson - Corporate Logo
ES#:
5444697
Mfg#:
06E906517A
Ships in 1-2 days
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

Keep your engine running efficiently Fits the left and right position

Brand:
Walker - Corporate Logo
ES#:
2598469
Mfg#:
06E906265Q
Ships in 1-2 days
$163.99

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

$158.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

Keep your engine running efficiently For engine code ATQ, fits left and right position

Brand:
Walker - Corporate Logo
ES#:
3551566
Mfg#:
1K0998262AB
Ships in 1-2 days
$142.99

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

$138.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Combi Valve / EGR Valve - Priced Each

ES#2955510 - 078131102T - Combi Valve / EGR Valve - Priced Each - Keep your emissions in check - Genuine Volkswagen Audi - Audi Volkswagen

Keep your emissions in check Right side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2955510
Mfg#:
078131102T
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.

$474.99

This product was last offered at the strikethrough price on
08-31-2026

$440.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Emissions Service Kit

ES#2598096 - 058103221EKT - Emissions Service Kit - Restore your emission hoses and clear codes - Assembled By ECS - Audi

Restore your emission hoses and clear codes 10X Entries Into Our F80 M3 Sweepstakes
Engine code AWM

Brand:
Assembled By ECS - Corporate Logo
ES#:
2598096
Mfg#:
058103221EKT
Ships in 4 Business Days
ON SALE!
$263.99

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

$252.41 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose

ES#279950 - 06B103217S - Breather Hose - Connects the PCV to the bleeder valve - Genuine Volkswagen Audi - Audi

Connects the PCV to the bleeder valve From VIN 8E-4-000001, split is in the 2004 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279950
Mfg#:
06B103217S
Ships in 5 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.

$173.99

This product was last offered at the strikethrough price on
08-31-2026

$156.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Combi Valve / EGR Valve - Left

ES#2955509 - 078131101AG - Combi Valve / EGR Valve - Left - Keep your emissions in check - Genuine Volkswagen Audi - Audi Volkswagen

Keep your emissions in check Left side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2955509
Mfg#:
078131101AG
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.

$474.99

This product was last offered at the strikethrough price on
08-31-2026

$440.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Breather Tube - Priced Each

ES#280184 - 06C103217H - Breather Tube - Priced Each - PCV hose set assembly, includes PCV valve - Genuine Volkswagen Audi - Audi

PCV hose set assembly, includes PCV valve Up to the 2003 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280184
Mfg#:
06C103217H
Ships in 7 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.

$616.99

This product was last offered at the strikethrough price on
08-31-2026

$555.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Locking Gas Cap With Keys

Keep your fuel to yourself Model year 1996 to 1998

Brand:
Gates - Corporate Logo
ES#:
3235408
Mfg#:
191201551A
Ships on Oct 1, 2026
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Assembly Gasket

ES#5340871 - 048103771 - Breather Assembly Gasket - Seals the breather assembly to the engine - Elring - Audi

Seals the breather assembly to the engine 2X Entries Into Our F80 M3 Sweepstakes
Engine codes AEB & ATW

Brand:
Elring - Corporate Logo
ES#:
5340871
Mfg#:
048103771
Special Order: No Guaranteed ETA
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valley Pan Gasket (Vent Trim)

Located underneath the PVC vent box 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5340931
Mfg#:
06C103771
Special Order: No Guaranteed ETA
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

Located beneath the intake manifold. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5340483
Mfg#:
06E103547P
Special Order: No Guaranteed ETA
$166.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Hose - With PCV Valve

Large breather hose that runs around the intake manifold 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5470374
Mfg#:
078103224R
Ships on Nov 16, 2026
ON SALE!
$32.99

This product was last offered at the strikethrough price on
05-29-2026

$31.34 USD
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Pump

Keep your engine running efficiently 10X Entries Into Our F80 M3 Sweepstakes
For vehicles from VIN 8D-Y-100,001, split is in the 2000 model year

Brand:
Bremmen Parts - Corporate Logo
ES#:
5491634
Mfg#:
06A959253E
Ships on Nov 16, 2026
$159.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve - Priced Each

ES#5492271 - 037906283C - Solenoid Valve - Priced Each - Direct OE replacement 2-pin switch valve to cure vacuum leaks, SAI faults, or intake runner codes (commonly used as N112, N156, or N249 valves). - Febi - Audi Volkswagen

Direct OE replacement 2-pin switch valve to cure vacuum leaks, SAI faults, or intake runner codes (commonly used as N112, N156, or N249 valves).

Brand:
Febi - Corporate Logo
ES#:
5492271
Mfg#:
037906283C
Special Order: No Guaranteed ETA
$36.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Crimp Clamp - Priced Each

ES#2872946 - N10202001 - Crimp Clamp - Priced Each - Install new hardware with your new parts. 24.1x7x0.6 - Febi - Audi Volkswagen

Install new hardware with your new parts. 24.1x7x0.6 We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2872946
Mfg#:
N10202001
Special Order: No Guaranteed ETA
$6.99 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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