Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle Clear

Audi B6 A4 Quattro 1.8T

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Audi B6 A4 Quattro 1.8T
Your Vehicle Audi B6 A4 Quattro 1.8T
Change Clear

Audi B6 A4 Quattro 1.8T Exhaust Emission Parts

Sort By
Filter By
Return to Top

Universal Oxygen Sensor Bung - Priced Each

ES#5051 - ATP-FLS-022 - Universal Oxygen Sensor Bung - Priced Each - Stainless steel weld-in nut for any O2 sensor - ATP - Audi BMW Volkswagen

Stainless steel weld-in nut for any O2 sensor

Brand:
ATP - Corporate Logo
ES#:
5051
Mfg#:
ATP-FLS-022
Ships in 6 Business Days
$12.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter - Left

ES#2975163 - 51115 - Catalytic Converter - Left - MagnaFlow Audi A4 Quattro OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter - Magnaflow - Audi

MagnaFlow Audi A4 Quattro OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

Brand:
Magnaflow - Corporate Logo
ES#:
2975163
Mfg#:
51115
Ships in 1 Business Day
$742.00 USD
Free Shipping

OEM Grade Direct-Fit Catalytic Converter

ES#2615411 - 49163 - OEM Grade Direct-Fit Catalytic Converter - Stainless steel construction, Federal emissions compliant design - Magnaflow - Audi

Stainless steel construction, Federal emissions compliant design *Not legal for sale, installation or use on vehicles registered in the state of California*

Brand:
Magnaflow - Corporate Logo
ES#:
2615411
Mfg#:
49163
Ships in 1 Business Day
$738.00 USD
Free Shipping

Catalytic Converter Installation Kit

ES#3028724 - 8D0253115KT4 - Catalytic Converter Installation Kit - Includes the necessary hardware and gaskets to install the catalytic converter - Genuine Volkswagen Audi - Audi Volkswagen

Includes the necessary hardware and gaskets to install the catalytic converter

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3028724
Mfg#:
8D0253115KT4
Ships in 1 day
$179.99

This product was last offered at the strikethrough price on
07-08-2026

$160.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#2635543 - 1K0998262D - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Walker - Audi Volkswagen

Keep your engine running efficiently

Brand:
Walker - Corporate Logo
ES#:
2635543
Mfg#:
1K0998262D
Ships in 1 day
$162.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket

Seals the turbocharger to the catalytic converter 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Elring - Corporate Logo
ES#:
5340940
Mfg#:
8D0253115
Ships on Dec 8, 2026
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve

Also known as the 'combi valve' We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4690216
Mfg#:
079131101AR
Special Order: No Guaranteed ETA
$139.99 USD
Free Shipping
on orders $49 and up

Catalytic Converter

ES#4064995 - 096-3021KT - Catalytic Converter - Keep your emissions in check - Price includes a $14.95 core charge - Bosal - Audi Volkswagen

Keep your emissions in check - Price includes a $14.95 core charge Not legal for sale or use in the state of New York or California

Brand:
Bosal - Corporate Logo
ES#:
4064995
Mfg#:
096-3021KT
Back Ordered
$952.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Direct-Fit Catalytic Converter With Hardware

ES#3046109 - 22960KT - Direct-Fit Catalytic Converter With Hardware - Includes the necessary hardware and gaskets to install the catalytic converter - Magnaflow - Audi

Includes the necessary hardware and gaskets to install the catalytic converter New York & Federal Compliant

Brand:
Magnaflow - Corporate Logo
ES#:
3046109
Mfg#:
22960KT
Back Ordered
$973.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Direct-Fit Catalytic Converter

ES#4619836 - 5561163 - Direct-Fit Catalytic Converter - 50 State Legal and CARB Compliant! - Magnaflow - Audi

50 State Legal and CARB Compliant!

Brand:
Magnaflow - Corporate Logo
ES#:
4619836
Mfg#:
5561163
EO#:
D-193-141
Back Ordered
$2371.00

This product was last offered at the strikethrough price on
11-04-2026

$2066.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VW | Lambda Sensor

ES#4854883 - 1K0998262 - VW | Lambda Sensor - Vemo - Audi Volkswagen

Brand:
Vemo - Corporate Logo
ES#:
4854883
Mfg#:
1K0998262
Special Order: No Guaranteed ETA
$230.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Exhaust Emission Parts

Oxygen sensors, catalytic converters, and other critical emissions components not only cause Check Engine Lights when they fail, but they'll also keep you from registering your car. Make sure your emissions system is functioning properly so you can continue to drive your car legally.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy Your Privacy Choices Cookie Policy ECS Tuning is part of Enthusiast Auto Holdings