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Audi A4 Exhaust Parts & Accessories

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Oxygen Sensor - Left (Cylinders 4-6)

ES#2162754 - 1K0998262N - Oxygen Sensor - Left (Cylinders 4-6) - Found before the catalytic converter - Bosch - Audi Volkswagen

Found before the catalytic converter 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2162754
Mfg#:
1K0998262N
In Stock at Vendor
$239.99

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

$227.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo Mounting Bolt - Priced Each

ES#1589 - 058145540 - Turbo Mounting Bolt - Priced Each - M10x50 - Secures the turbocharger to the manifold - Genuine Volkswagen Audi - Audi Volkswagen

M10x50 - Secures the turbocharger to the manifold

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1589
Mfg#:
058145540
In Stock
23% off MSRP

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

$29.99

This product was last offered at the strikethrough price on
02-23-2026

$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust - Semi Resonated

ES#4159848 - B9A4SEMIRESONATE - Cat-Back Exhaust - Semi Resonated - 2.76" stainless steel with your choice of tip style - Milltek Sport - Audi

2.76" stainless steel with your choice of tip style

Brand:
Milltek Sport - Corporate Logo
ES#:
4159848
Mfg#:
B9A4SEMIRESONATE
Ships in 3 Business Days
Starting at $2213.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sport & Sound Pack Cat-Back Exhaust System

ES#3508263 - 764920 - Sport & Sound Pack Cat-Back Exhaust System - Stainless steel non-resonated cat-back exhaust system with dual round, polished tips - Supersprint - Audi

Stainless steel non-resonated cat-back exhaust system with dual round, polished tips

Brand:
Supersprint - Corporate Logo
ES#:
3508263
Mfg#:
764920
Ships in 3 Business Days
$2170.99 USD
Free Shipping

Dual Clamp Exhaust Sleeve - Priced Each

ES#2882479 - 1K0253141M - Dual Clamp Exhaust Sleeve - Priced Each - Quiet down your leaking exhaust. 55mm - Vaico - Audi Volkswagen

Quiet down your leaking exhaust. 55mm We Price Match - Give Us A Call or Chat!
Connects the down pipe to the center muffler

Brand:
Vaico - Corporate Logo
ES#:
2882479
Mfg#:
1K0253141M
In Stock
$31.99

This product was last offered at the strikethrough price on
01-23-2026

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

Catalytic Converter Install Kit

ES#2576283 - 8K0253115AKT2 - Catalytic Converter Install Kit - Contains all of the hardware you need to install new catalytic converters on your Audi - Assembled By ECS - Audi

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

Brand:
Assembled By ECS - Corporate Logo
ES#:
2576283
Mfg#:
8K0253115AKT2
In Stock
ON SALE! SAVE 12%
$98.99

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

$86.85 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#3175521 - 252561TM - Cat-Back Exhaust System - 2.5" T-304 Stainless Steel exhaust system with dual tip Magnaflow muffler - Techtonics Tuning - Audi

2.5" T-304 Stainless Steel exhaust system with dual tip Magnaflow muffler

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175521
Mfg#:
252561TM
Ships in 8 Business Days
$687.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Dual Clamp Exhaust Sleeve - Priced Each

ES#3023 - 357253141A - Dual Clamp Exhaust Sleeve - Priced Each - Quiet down your leaking exhaust. 55mm - HJS - Audi Volkswagen

Quiet down your leaking exhaust. 55mm Secures the downpipe to the center muffler

Brand:
HJS - Corporate Logo
ES#:
3023
Mfg#:
357253141A
In Stock
$13.25 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AWE Touring Edition Exhaust System - Audi B9 A4 2.0T

ES#4727590 - AWEB9A4TR - AWE Touring Edition Exhaust System - Audi B9 A4 2.0T - Delivers a civil, smooth soundtrack throughout the range while providing an enhanced in-cabin driving experience in any Drive Select mode. Features AWE's proprietary 180 Technology resonators. - AWE - Audi

Delivers a civil, smooth soundtrack throughout the range while providing an enhanced in-cabin driving experience in any Drive Select mode. Features AWE's proprietary 180 Technology® resonators. For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
AWE - Corporate Logo
ES#:
4727590
Mfg#:
AWEB9A4TR
Ships on Aug 7, 2026
Starting at $2045.00 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#4004062 - CTS-EXH-CB-0019 - Cat-Back Exhaust System - 3.0" tig welded T304 stainless steel with dual 4.0" polished stainless tips - CTS - Audi

3.0" tig welded T304 stainless steel with dual 4.0" polished stainless tips For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
CTS - Corporate Logo
ES#:
4004062
Mfg#:
CTS-EXH-CB-0019
Ships in 8 Business Days
ON SALE! SAVE 15%
$1199.99

This product was last offered at the strikethrough price on
07-10-2026

$1019.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Non-Resonated

2.76" stainless steel with your choice of tip style

Brand:
Milltek Sport - Corporate Logo
ES#:
4159437
Mfg#:
B9A4NONRESONATED
Ships in 3 Business Days
Starting at $2026.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175271 - 251127 - Performance Stainless 2.5" Downpipe - High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust - Techtonics Tuning - Audi

High flow, stainless downpipe kit to be used with 2.5" aftermarket exhaust Fits automatic transmission models only - To be used with 2.5" aftermarket exhaust system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175271
Mfg#:
251127
Ships on Aug 11, 2026
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

K03 Turbocharger With ECS Installation Kit (06D145701J)

ES#3143326 - 06D145701JKT1 - K03 Turbocharger With ECS Installation Kit (06D145701J) - Restore your boost levels and get going! - BorgWarner - Audi

Restore your boost levels and get going!

Brand:
BorgWarner - Corporate Logo
ES#:
3143326
Mfg#:
06D145701JKT1
In Stock at Vendor
$2233.99

This product was last offered at the strikethrough price on
02-24-2026

$1940.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Exhaust Parts & Accessories

From stock exhaust system repairs to polished stainless steel performance exhaust, we have exhaust pipes, mufflers, resonators, and catalytic converters from the most respected suppliers in the business. Go loud, stay soft, look good with exhaust parts and systems from ECS Tuning.

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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