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Audi A4 Engine Emission Parts

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Purge Valve Securing Ring

ES#280049 - 06B133459D - Purge Valve Securing Ring - Rubber ring that secures the purge valve in place - Genuine Volkswagen Audi - Audi

Rubber ring that secures the purge valve in place

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280049
Mfg#:
06B133459D
Ships in 1-2 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.

$21.99

This product was last offered at the strikethrough price on
07-25-2026

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Check Valve

ES#3462926 - 07C133529A - Check Valve - Located near off of the intake manifold connecting to the suction pump - Kayser - Audi

Located near off of the intake manifold connecting to the suction pump

Brand:
Kayser - Corporate Logo
ES#:
3462926
Mfg#:
07C133529A
Ships in 1-2 days
$20.99

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

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Offset Oxygen Sensor Wrench- Extended

ES#4001169 - CTA2065 - Offset Oxygen Sensor Wrench- Extended - Extra length is needed sometimes - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Extra length is needed sometimes

Brand:
CTA Tools - Corporate Logo
ES#:
4001169
Mfg#:
CTA2065
Back Ordered
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose

ES#4138708 - 058103221A - Breather Hose - 'L' shaped hose attached to the bleeder valve under the intake manifold - URO - Audi Volkswagen

'L' shaped hose attached to the bleeder valve under the intake manifold 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Engine code AEB with manual transmissions

Brand:
URO - Corporate Logo
ES#:
4138708
Mfg#:
058103221A
Ships in 1 Business Day
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Silicone Breather Hose Elbow

ES#2966841 - 034-101-3046 - Silicone Breather Hose Elbow - Connects the pressure regulator to the hard breather tube - 034Motorsport - Audi

Connects the pressure regulator to the hard breather tube From VIN 8E-4-000001, split is in the 2004 model year

Brand:
034Motorsport - Corporate Logo
ES#:
2966841
Mfg#:
034-101-3046
Ships in 2 Business Days
$19.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Hose

ES#4151156 - 078103223B - Crankcase Breather Hose - Small "S" breather hose that runs on the backside of the intake manifold - Rein - Audi Volkswagen

Small "S" breather hose that runs on the backside of the intake manifold 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4151156
Mfg#:
078103223B
Ships in 3 Business Days
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hose Clamp - Priced Each

ES#2803685 - N90739901 - Hose Clamp - Priced Each - Install new clamps to stay leak free. 31x10x0.8mm - Rein - Audi Volkswagen

Install new clamps to stay leak free. 31x10x0.8mm 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2803685
Mfg#:
N90739901
Ships in 3 Business Days
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Assembly Gasket

ES#2815771 - 48103771 - Breather Assembly Gasket - Seals the breather assembly to the engine - Hamburg Tech - Audi

Seals the breather assembly to the engine We Price Match - Give Us A Call or Chat!
Engine codes AEB & ATW

Brand:
Hamburg Tech - Corporate Logo
ES#:
2815771
Mfg#:
48103771
Ships in 3 Business Days
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#5307949 - 034129101B - Pressure Control Valve (PCV) - Located on the turbo inlet pipe. 19mm - Bremmen Parts - Audi Volkswagen

Located on the turbo inlet pipe. 19mm 10X Entries For Our 25th Anniversary Sweepstakes!
Engine codes AEB & ATW

Brand:
Bremmen Parts - Corporate Logo
ES#:
5307949
Mfg#:
034129101B
Special Order: No Guaranteed ETA
Auto Notify
ON SALE! SAVE 22%
$22.99

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

$17.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - Priced Each

ES#2575453 - 06B103245 - Pressure Control Valve (PCV) - Priced Each - Located under the intake manifold - OE Aftermarket - Audi Volkswagen

Located under the intake manifold From VIN 8E-3-040001 up to VIN 8E-3-500000, splits are in the 2003 model year

Brand:
OE Aftermarket - Corporate Logo
ES#:
2575453
Mfg#:
06B103245
Ships in 3 Business Days
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Check Valve

ES#2815730 - 433862117 - Check Valve - Vacuum Non Return Valve - Hamburg Tech - Audi

Vacuum Non Return Valve We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2815730
Mfg#:
433862117
In Stock at Vendor
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Allen Head Screw - Priced Each

ES#467961 - N10323104 - Allen Head Screw - Priced Each - M6x20 - Genuine Volkswagen Audi - Audi

M6x20

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467961
Mfg#:
N10323104
Ships in 2 Business Days
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cap Nut - Priced Each

ES#465892 - N0111214 - Cap Nut - Priced Each - Install new hardware with your new parts. M6 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
465892
Mfg#:
N0111214
Ships in 3 Business Days
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bolt - Priced Each

ES#468688 - N10633603 - Bolt - Priced Each - Secures leak detection pump to the bracket. M4.8x13 - Genuine Volkswagen Audi - Audi

Secures leak detection pump to the bracket. M4.8x13

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
468688
Mfg#:
N10633603
Ships in 1-2 days
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Replacement Kit

ES#2766065 - 078131120KKT - EGR Valve Replacement Kit - Complete gasket and hardware to replace the EGR valve - Assembled By ECS - Audi

Complete gasket and hardware to replace the EGR valve 10X Entries For Our 25th Anniversary Sweepstakes!
Engine codes ATW

Brand:
Assembled By ECS - Corporate Logo
ES#:
2766065
Mfg#:
078131120KKT
In Stock
ON SALE! SAVE 27%
$20.99

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

$15.36 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose

ES#4376359 - 058133784A - Breather Hose - Connects the purge valve to check valve - URO - Audi Volkswagen

Connects the purge valve to check valve 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4376359
Mfg#:
058133784A
Ships in 1 Business Day
$14.99 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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