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Audi B5 A4 Quattro V6 30v

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Audi B5 A4 Quattro V6 30v Engine Emission Parts

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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
11% 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

$423.99 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 7 Business Days
11% 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

$423.99 USD
Free Shipping
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 10, 2026
ON SALE!
$32.99

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

$31.34 USD
Free Shipping
on orders $49 and up
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 10, 2026
ON SALE! SAVE 10%
$159.99

This product was last offered at the strikethrough price on
10-08-2026

$143.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VW | Change-Over Valve, exhaust-gas door

Brand:
Vemo - Corporate Logo
ES#:
4853045
Mfg#:
026906283J
Special Order: No Guaranteed ETA
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

1/8" Barbed Vacuum Fittings - Set Of 10

Perfect for repairing and replacing cracked vacuum lines - Best used with 3mm to 4mm vacuum hoses 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5445719
Mfg#:
125DBCON
Special Order: No Guaranteed ETA
ON SALE! SAVE 10%
$5.99

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

$5.39 USD
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Gasket

ES#11826 - 078103547f - Crankcase Breather Gasket - Seals the crankcase breather to the engine block - Original Equipment Supplier - Audi

Seals the crankcase breather to the engine block

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
11826
Mfg#:
078103547F
Back Ordered
6% off MSRP

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

$48.99

This product was last offered at the strikethrough price on
10-22-2026

$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Accumulator

ES#2885559 - 38129807 - Pressure Accumulator - Vaico - Audi Volkswagen

We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2885559
Mfg#:
38129807
Special Order: No Guaranteed ETA
$61.99

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

$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap

Replacement fuel tank cap for your vehicle. Tether not included.

Brand:
MotoRad
ES#:
4698376
Mfg#:
1J0201553A
Back Ordered
$11.99

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

$10.99 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.

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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