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Audi A4 Exhaust Emission Parts

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Front Oxygen Sensor - Priced Each

ES#2636229 - 1K0998262F - Front Oxygen Sensor - Priced Each - Keep your engine running efficiently - Walker - Audi Volkswagen

Keep your engine running efficiently Fits left and right position

Brand:
Walker - Corporate Logo
ES#:
2636229
Mfg#:
1K0998262F
Ships in 1 Business Day
$176.99

This product was last offered at the strikethrough price on
04-10-2026

$142.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#2712768 - 078906265AA - Oxygen Sensor - Priced Each - Located behind the catalytic converter - Vemo - Audi Volkswagen

Located behind the catalytic converter

Brand:
Vemo - Corporate Logo
ES#:
2712768
Mfg#:
078906265AA
Ships in 1 Business Day
$141.67 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve

ES#2661314 - 058131101B - EGR Valve - Also known as the 'combi valve' - Pierburg - Audi Volkswagen

Also known as the 'combi valve'

Brand:
Pierburg - Corporate Logo
ES#:
2661314
Mfg#:
058131101B
Ships in 1 day
$139.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

ES#4135682 - 06E906265Q - Rear Oxygen Sensor - Priced Each - Keep your engine running efficiently - Denso - Audi

Keep your engine running efficiently Fits the left and right position

Brand:
Denso - Corporate Logo
ES#:
4135682
Mfg#:
06E906265Q
Ships in 1 Business Day
$142.99

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

$137.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

ES#4057477 - 1K0998262T - Rear Oxygen Sensor - Priced Each - Keep your engine running efficiently - Denso - Audi Volkswagen

Keep your engine running efficiently

Brand:
Denso - Corporate Logo
ES#:
4057477
Mfg#:
1K0998262T
Ships in 1 Business Day
$139.99

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

$135.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#2825758 - 1K0998262E - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Walker - Audi Volkswagen

Keep your engine running efficiently

Brand:
Walker - Corporate Logo
ES#:
2825758
Mfg#:
1K0998262E
Ships in 1 day
$132.99

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

$129.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Manifold Stud - Priced Each

ES#467176 - N0445145 - Exhaust Manifold Stud - Priced Each - Allows the down pipes to be secured to the manifold. M8x25 - Genuine Volkswagen Audi - Audi Volkswagen

Allows the down pipes to be secured to the manifold. M8x25

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467176
Mfg#:
N0445145
Ships in 2 Business Days
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#4505652 - 021906265AK - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Meyle - Audi Volkswagen

Keep your engine running efficiently 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For engine code AHA, fits left and right position

Brand:
Meyle - Corporate Logo
ES#:
4505652
Mfg#:
021906265AK
Ships on Oct 6, 2026
$61.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

7-Piece Oxygen Sensor Socket Set

ES#3126770 - 2850 - 7-Piece Oxygen Sensor Socket Set - Easily removes vacuum switches, oil pressure sending units, brake light switches, and oxygen sensors on most car models - Sunex - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Easily removes vacuum switches, oil pressure sending units, brake light switches, and oxygen sensors on most car models

Brand:
Sunex - Corporate Logo
ES#:
3126770
Mfg#:
2850
Back Ordered
11% off MSRP

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

$135.00

This product was last offered at the strikethrough price on
09-20-2026

$119.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#1558 - 021906265AG - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Bosch - Audi Volkswagen

Keep your engine running efficiently We Price Match - Give Us A Call or Chat!
Up to VIN 8D-W-007799, split is in the 1998 model year

Brand:
Bosch - Corporate Logo
ES#:
1558
Mfg#:
021906265AG
Ships in 1 day
$127.99

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

$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

ES#2570165 - 1K0998262T - Rear Oxygen Sensor - Priced Each - Keep your engine running efficiently - Walker - Audi Volkswagen

Keep your engine running efficiently

Brand:
Walker - Corporate Logo
ES#:
2570165
Mfg#:
1K0998262T
Ships in 1 day
$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Downpipe

ES#205325 - 860-931 - Exhaust Downpipe - Includes the flex section - Bosal - Audi

Includes the flex section

Brand:
Bosal - Corporate Logo
ES#:
205325
Mfg#:
860-931
Back Ordered
$111.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - 4 Pin - Black

Located after the catalytic converter For models with BGN engine code only - Fits left and right sides

Brand:
Walker - Corporate Logo
ES#:
3690282
Mfg#:
1K0998262R
Ships in 1 day
$106.99 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

Brand:
Bremmen Parts - Corporate Logo
ES#:
5470646
Mfg#:
1K0998262L
Ships on Nov 30, 2026
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 - 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 1 day
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
09-20-2026

$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 Into Our F80 M3 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

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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