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Audi B5 S4 2.7T

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Audi B5 S4 2.7T Engine Emission Parts

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Oxygen Sensor Tool - 22mm

ES#3673912 - B8800067 - Oxygen Sensor Tool - 22mm - 1/2" Drive - 7/8" x 6" - Extra Long - Bav Auto Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

1/2" Drive - 7/8" x 6" - Extra Long affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bav Auto Tools - Corporate Logo
ES#:
3673912
Mfg#:
B8800067
Ships on Aug 10, 2026
Auto Notify
ON SALE! SAVE 20%
$29.99

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

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum System Repair Kit

ES#279586 - 06A198011B - Vacuum System Repair Kit - Restore engine performance with this new kit - Genuine Volkswagen Audi - Audi Volkswagen

Restore engine performance with this new kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279586
Mfg#:
06A198011B
Ships in 1-2 days
17% off MSRP

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

$178.32

This product was last offered at the strikethrough price on
07-02-2026

$148.36 USD
Free Shipping

Valve Control Solenoid (N249)

ES#248500 - 078906283A - Valve Control Solenoid (N249) - Valve used to control combi valve operation - Pierburg - Audi Volkswagen

Valve used to control combi valve operation affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Manual transmissions only

Brand:
Pierburg - Corporate Logo
ES#:
248500
Mfg#:
078906283A
Ships in 7 Business Days
$96.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

N80 Purge Valve

ES#283789 - 078133517H - N80 Purge Valve - Common cure for DTC P0441 - Genuine Volkswagen Audi - Audi

Common cure for DTC P0441 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283789
Mfg#:
078133517H
In Stock
Limited Qty Sale
$187.54

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

$149.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Universal Catch Can Drain System

ES#3698456 - 003779ECS11 - ECS Tuning Universal Catch Can Drain System - Make draining your ECS or Turner Catch Can simple with this comprehensive kit - ECS - Audi Volkswagen MINI

Make draining your ECS or Turner Catch Can simple with this comprehensive kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3698456
Mfg#:
003779ECS11
In Stock
ON SALE! SAVE 25%
$71.99

This product was last offered at the strikethrough price on
06-13-2026

$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve (N249) - Priced Each

ES#4818403 - 026906283J - Solenoid Valve (N249) - Priced Each - Controls actuation of the Combi Valve or Diverter Valve - Bremmen Parts - Audi Volkswagen

Controls actuation of the Combi Valve or Diverter Valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Engine codes ATW & AWM

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818403
Mfg#:
026906283J
In Stock
ON SALE! SAVE 15%
$48.99

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

$41.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pressure Control Valve (PCV) Assembly

ES#283298 - 078103235G - Pressure Control Valve (PCV) Assembly - Complete breather hose assembly that includes the PCV valve - Genuine Volkswagen Audi - Audi

Complete breather hose assembly that includes the PCV valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Automatic transmission vehicles up to VIN 8D-1-053000, split is in the 2001 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283298
Mfg#:
078103235G
In Stock at Vendor
12% off MSRP

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

$366.99

This product was last offered at the strikethrough price on
01-08-2026

$321.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve (N249) - Priced Each

ES#4701353 - 026906283J - Solenoid Valve (N249) - Priced Each - Controls actuation of the Combi Valve or Diverter Valve - Hamburg Tech - Audi Volkswagen

Controls actuation of the Combi Valve or Diverter Valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Engine codes ATW & AWM

Brand:
Hamburg Tech - Corporate Logo
ES#:
4701353
Mfg#:
026906283J
In Stock
$52.99 USD
Free Shipping
on orders $49 and up

Suction Pump

ES#252639 - 058133753D - Suction Pump - Restore engine performance - Genuine Volkswagen Audi - Audi Volkswagen

Restore engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Automatic transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
252639
Mfg#:
058133753D
In Stock
7% off MSRP

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

$91.65

This product was last offered at the strikethrough price on
07-02-2026

$85.47 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#467458 - N10124408 - Hex Bolt - Priced Each - Install new hardware with your new parts. M6x20 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x20 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467458
Mfg#:
N10124408
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

IE Recirculating Billet Catch Can

ES#2794189 - IEDIYUU17 - IE Recirculating Billet Catch Can - Prevent crankcase oil fumes from filling your intake piping, turbo piping, intercooler, intake manifold, and breather system - Integrated Engineering - Audi Volkswagen

Prevent crankcase oil fumes from filling your intake piping, turbo piping, intercooler, intake manifold, and breather system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
*Universal Fitment - Custom Install Required - Does not include fittings, adapters, or hose ends*

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794189
Mfg#:
IEDIYUU17
In Stock
ON SALE! SAVE 10%
$186.99

This product was last offered at the strikethrough price on
06-25-2026

$168.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Solenoid Valve (N249) - Priced Each

ES#258893 - 026906283J - Solenoid Valve (N249) - Priced Each - Controls actuation of the Combi Valve or Diverter Valve - Pierburg - Audi Volkswagen

Controls actuation of the Combi Valve or Diverter Valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Engine codes ATW & AWM

Brand:
Pierburg - Corporate Logo
ES#:
258893
Mfg#:
026906283J
In Stock at Vendor
$114.83

This product was last offered at the strikethrough price on
03-21-2026

$104.78 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Suction Pump

ES#4818419 - 058133753D - Suction Pump - Restore engine performance - Bremmen Parts - Audi Volkswagen

Restore engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Automatic transmission only

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818419
Mfg#:
058133753D
In Stock
ON SALE! SAVE 23%
$16.99

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

$13.05 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Check Valve

ES#3462925 - 078611933B - Vacuum Check Valve - Multiple line check valve that sits in the back of the intake manifold - Kayser - Audi

Multiple line check valve that sits in the back of the intake manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Automatic Transmission Vehicles - Up To VIN 8D-1-053000, Split is in the 2001 model year - Manual Transmission Vehicles - Works on all model years

Brand:
Kayser - Corporate Logo
ES#:
3462925
Mfg#:
078611933B
In Stock
$16.42 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 10AN ORB To 3/8" Barb

ES#4460630 - rad20-0530 - Universal 10AN ORB To 3/8" Barb - This PCV can be used on the outlet of any Radium Engineering catch can - Radium Engineering - Audi BMW Volkswagen Mercedes Benz MINI Porsche

This PCV can be used on the outlet of any Radium Engineering catch can affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Radium Engineering - Corporate Logo
ES#:
4460630
Mfg#:
RAD20-0530
In Stock
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Suction Pump

ES#2772076 - 058133753D - Suction Pump - Restore engine performance - URO - Audi Volkswagen

Restore engine performance affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Automatic transmission only

Brand:
URO - Corporate Logo
ES#:
2772076
Mfg#:
058133753D
In Stock
$28.42

This product was last offered at the strikethrough price on
03-25-2026

$21.99 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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