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Audi S4 Engine Emission Parts

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Suction Pump replacement kit

ES#2771210 - 058133753Dkt1 - Suction Pump replacement kit - Restore engine performance - Assembled By ECS - Audi

Restore engine performance 10X Entries Into Our F80 M3 Sweepstakes
Automatic transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2771210
Mfg#:
058133753DKT1
In Stock
ON SALE! SAVE 23%
$31.28

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

$23.97 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Connecting Hard Pipe

ES#284779 - 079121070T - Connecting Hard Pipe - Middle pipe section for the air pump. - Genuine Volkswagen Audi - Audi

Middle pipe section for the air pump. From VIN 8E-5-030001, split is in the 2005 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
284779
Mfg#:
079121070T
Ships in 3 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.

$236.99

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

$213.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator/Pressure Control Valve (PCV)

ES#4851165 - PAB103495E - Oil Separator/Pressure Control Valve (PCV) - Also known as the "PCV". Located on the valve cover - Genuine Porsche - Audi Porsche

Also known as the "PCV". Located on the valve cover

Brand:
Genuine Porsche - Corporate Logo
ES#:
4851165
Mfg#:
PAB103495E
Ships in 4 Business Days
$211.99

This product was last offered at the strikethrough price on
08-04-2026

$209.99 USD
Free Shipping
on orders $49 and up

Oxygen Sensor - Front Position

ES#2866474 - 078906265M - Oxygen Sensor - Front Position - Keep your engine running efficiently - Febi - Audi

Keep your engine running efficiently We Price Match - Give Us A Call or Chat!
Fits left and right front position

Brand:
Febi - Corporate Logo
ES#:
2866474
Mfg#:
078906265M
Ships on Dec 3, 2026
$104.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve - Priced Each

ES#4883338 - 037906283C - Solenoid Valve - Priced Each - Common cure for DTC P0441 - Rein - Audi Volkswagen

Common cure for DTC P0441 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4883338
Mfg#:
037906283C
Ships in 1 Business Day
ON SALE!
$54.99

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

$52.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve (N249) - Priced Each

ES#12056 - 026906283J - Solenoid Valve (N249) - Priced Each - Controls actuation of the Combi Valve or Diverter Valve - Genuine Volkswagen Audi - Audi Volkswagen

Controls actuation of the Combi Valve or Diverter Valve Often known as "N112 valve" - Automatic transmission vehicles only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
12056
Mfg#:
026906283J
Ships in 3 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.

$224.99

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

$202.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV)

ES#2631446 - 034129101B - Pressure Control Valve (PCV) - Located on the turbo inlet pipe. 19mm - Vaico - Audi Volkswagen

Located on the turbo inlet pipe. 19mm We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2631446
Mfg#:
034129101B
In Stock
ON SALE! SAVE 50%
$34.99

This product was last offered at the strikethrough price on
08-23-2026

$17.50 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RS5 Gas Cap

ES#4428997 - 8W0201550J - RS5 Gas Cap - Fuel filler cap with Audi 'RS' logo - Includes retaining strap - Genuine Volkswagen Audi - Audi

Fuel filler cap with Audi 'RS' logo - Includes retaining strap

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4428997
Mfg#:
8W0201550J
Ships in 10 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.

$69.99

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

$62.99 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 Engine codes ATW & AWM

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2663732
Mfg#:
026906283J
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.

$208.99

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

$186.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Hose

ES#436530 - 8E0201935H - Vacuum Hose - Runs from the vacuum tank to the intake manifold - Genuine Volkswagen Audi - Audi

Runs from the vacuum tank to the intake manifold

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
436530
Mfg#:
8E0201935H
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.

$203.99

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

$183.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

Keep your engine running efficiently 10X Entries Into Our F80 M3 Sweepstakes
Fits the left and right position

Brand:
Bremmen Parts - Corporate Logo
ES#:
5373885
Mfg#:
06E906265AJ
Special Order: No Guaranteed ETA
Auto Notify
ON SALE! SAVE 10%
$203.99

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

$183.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Allen Bolt - Priced Each

ES#466521 - N01474011 - Allen Bolt - Priced Each - Install new hardware with your new parts. M6x16 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x16

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
466521
Mfg#:
N01474011
In Stock
5% off MSRP

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

$3.06

This product was last offered at the strikethrough price on
09-01-2026

$2.91 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Torx Screw - Priced Each

ES#470296 - N90598804 - Torx Screw - Priced Each - Install new hardware with your new parts. M6x12 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M6x12

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470296
Mfg#:
N90598804
Ships in 1-2 days
$2.92 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Thread Chaser

ES#4001163 - CTA2068 - Oxygen Sensor Thread Chaser - Remove rust and dirt for easy installation with this tool - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Remove rust and dirt for easy installation with this tool

Brand:
CTA Tools - Corporate Logo
ES#:
4001163
Mfg#:
CTA2068
In Stock
$11.41 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) - (19mm)

ES#2598295 - 035103245A - Pressure Control Valve (PCV) - (19mm) - Located under the intake manifold - URO - Audi Volkswagen

Located under the intake manifold 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2598295
Mfg#:
035103245A
In Stock
$8.48 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vent Tube

Connects to the leak detection pump

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450440
Mfg#:
8K0201997AH
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.

$185.99

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

$167.99 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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