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Audi A4 Exhaust Emission Parts

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Front Oxygen Sensor - Priced Each

Keep your engine running efficiently 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5470646
Mfg#:
1K0998262L
Ships on Dec 4, 2026
Auto Notify
ON SALE! SAVE 20%
$129.99

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

$103.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket

ES#2748376 - 1H0253115 - Exhaust Gasket - Seals the down pipe to the catalytic converter - Elring - Audi Volkswagen

Seals the down pipe to the catalytic converter 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2748376
Mfg#:
1H0253115
In Stock at Vendor
$13.99

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

$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#429580 - 8D0253115C - Exhaust Gasket - Priced Each - Between the exhaust manifold and downpipe, requires 2 - Genuine Volkswagen Audi - Audi Volkswagen

Between the exhaust manifold and downpipe, requires 2

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
429580
Mfg#:
8D0253115C
Ships in 2 Business Days
13% off MSRP

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

$14.99

This product was last offered at the strikethrough price on
07-19-2026

$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Replacement Kit

ES#2766074 - 078131120KKT6 - 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!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2766074
Mfg#:
078131120KKT6
Ships in 2 Business Days
ON SALE! SAVE 16%
$58.99

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

$49.47 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Gasket - Priced Each

ES#283692 - 078131120K - EGR Valve Gasket - Priced Each - Ensure a proper seal - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283692
Mfg#:
078131120K
Ships in 2 Business Days
7% off MSRP

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

$14.99

This product was last offered at the strikethrough price on
07-19-2026

$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Installation Kit

ES#2575490 - 8D0253115KT2 - Catalytic Converter Installation Kit - Includes the necessary hardware and gaskets to install the catalytic converter - Assembled By ECS - Audi

Includes the necessary hardware and gaskets to install the catalytic converter 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2575490
Mfg#:
8D0253115KT2
In Stock
ON SALE! SAVE 21%
$59.99

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

$47.50 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Stud - Priced Each

ES#4070301 - N0445203 - Exhaust Stud - Priced Each - Install new hardware with your new parts. M10X28 - Rein - Audi Volkswagen

Install new hardware with your new parts. M10X28 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Allows the catalytic converter to be secured to the turbocharger

Brand:
Rein - Corporate Logo
ES#:
4070301
Mfg#:
N0445203
In Stock
Limited Qty Sale
$6.99

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

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#2894981 - 078906265N - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Vemo - Audi Volkswagen

Keep your engine running efficiently For engine code ATQ, fits left and right position

Brand:
Vemo - Corporate Logo
ES#:
2894981
Mfg#:
078906265N
Special Order: No Guaranteed ETA
$83.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#2800427 - 8K0253115D - Exhaust Gasket - Priced Each - Seals the catalytic converter to the downpipe - Ajusa - Audi

Seals the catalytic converter to the downpipe

Brand:
Ajusa - Corporate Logo
ES#:
2800427
Mfg#:
8K0253115D
Back Ordered
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

Exhaust Gasket

ES#436571 - 8E0253115D - Exhaust Gasket - Located between the turbo & catalytic converter - Genuine Volkswagen Audi - Audi

Located between the turbo & catalytic converter

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
436571
Mfg#:
8E0253115D
In Stock
$12.99

This product was last offered at the strikethrough price on
07-06-2026

$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Downpipe installation Kit

ES#2576234 - 8E0253115CKT1 - Downpipe installation Kit - Contains all of the hardware you need to install new downpipes on your Audi - Assembled By ECS - Audi

Contains all of the hardware you need to install new downpipes on your Audi 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2576234
Mfg#:
8E0253115CKT1
Ships in 2 Business Days
ON SALE!
$74.99

This product was last offered at the strikethrough price on
02-10-2026

$70.21 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket

ES#4044493 - 1H0253115 - Exhaust Gasket - Seals the downpipe to the catalytic converter - HJS - Audi Volkswagen

Seals the downpipe to the catalytic converter

Brand:
HJS - Corporate Logo
ES#:
4044493
Mfg#:
1H0253115
In Stock
$5.99

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

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket

ES#2717942 - 1H0253115 - Exhaust Gasket - Seals the downpipe to the catalytic converter - Vaico - Audi Volkswagen

Seals the downpipe to the catalytic converter We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2717942
Mfg#:
1H0253115
Back Ordered
$5.99

This product was last offered at the strikethrough price on
04-15-2026

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Dual Drive Oxygen Sensor Wrench

ES#2944218 - LIS12390 - Dual Drive Oxygen Sensor Wrench - Tool comes with both 1/2" and 3/8" drive. - Lisle - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Tool comes with both 1/2" and 3/8" drive.

Brand:
Lisle - Corporate Logo
ES#:
2944218
Mfg#:
LIS12390
Ships in 6 Business Days
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#436570 - 8E0253115C - Exhaust Gasket - Priced Each - Located between the exhaust manifold & downpipe - Genuine Volkswagen Audi - Audi

Located between the exhaust manifold & downpipe

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
436570
Mfg#:
8E0253115C
Ships in 2 Business Days
8% off MSRP

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

$12.99

This product was last offered at the strikethrough price on
07-19-2026

$11.99 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.

Let us help you find the parts that fit your Audi

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Manufacturer names and/or part numbers are used only for identification purposes.

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