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Audi A4 Exhaust Parts & Accessories

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High Flow Cat Installation Kit

ES#4030561 - 034-105-A006 - High Flow Cat Installation Kit - Downpipe Hardware and Gasket Kit for B8 Audi A4/A5/Q5/Allroad equipped with the 2.0 TFSI engine. - 034Motorsport - Audi

Downpipe Hardware and Gasket Kit for B8 Audi A4/A5/Q5/Allroad equipped with the 2.0 TFSI engine. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4030561
Mfg#:
034-105-A006
In Stock
$70.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Installation Kit

ES#2575495 - 8K0253115KT2 - Catalytic Converter Installation Kit - Contains all of the hardware you need to install a new catalytic converter - Assembled By ECS - Audi

Contains all of the hardware you need to install a new catalytic converter 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2575495
Mfg#:
8K0253115KT2
In Stock
ON SALE! SAVE 20%
$58.99

This product was last offered at the strikethrough price on
10-28-2026

$47.42 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

2.50" Downpipe

ES#4070382 - MSAU165 - 2.50" Downpipe - Replacement downpipe - To be used in various B6 A4 1.8T Milltek Exhaust Systems - SSXAU305, SSXAU033, SSXAU089, SSXAU510, SSXAU509, SSXAU304 - Milltek Sport - Audi

Replacement downpipe - To be used in various B6 A4 1.8T Milltek Exhaust Systems - SSXAU305, SSXAU033, SSXAU089, SSXAU510, SSXAU509, SSXAU304

Brand:
Milltek Sport - Corporate Logo
ES#:
4070382
Mfg#:
MSAU165
Back Ordered
$249.00 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 Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2576283
Mfg#:
8K0253115AKT2
In Stock
ON SALE!
$87.99

This product was last offered at the strikethrough price on
10-26-2026

$80.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B7 A4 2.0T Cat-Back Exhaust System - Resonated

ES#2918090 - SSXAU514 - B7 A4 2.0T Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual GT 100mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual GT 100mm polished tips Manual transmission only

Brand:
Milltek Sport - Corporate Logo
ES#:
2918090
Mfg#:
SSXAU514
Ships on Nov 27, 2026
$1897.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827275 - SSXAU089 - Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual 100mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual 100mm polished tips Fits 5 speed manual only

Brand:
Milltek Sport - Corporate Logo
ES#:
2827275
Mfg#:
SSXAU089
Ships on Nov 27, 2026
$1875.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827276 - SSXAU090 - Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual 100mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual 100mm polished tips Fits 6 speed manual only

Brand:
Milltek Sport - Corporate Logo
ES#:
2827276
Mfg#:
SSXAU090
Ships on Nov 27, 2026
$1875.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust - Resonated

ES#2827253 - SSXAU034 - Cat-Back Exhaust - Resonated - 2.5" stainless steel and 90mm tips - Milltek Sport - Audi

2.5" stainless steel and 90mm tips For 6 speed manual transmission Avant models only,

Brand:
Milltek Sport - Corporate Logo
ES#:
2827253
Mfg#:
SSXAU034
Ships on Nov 27, 2026
$1856.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System - Resonated

ES#2827252 - SSXAU033 - Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual 90mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual 90mm polished tips Fits 5 speed manual only

Brand:
Milltek Sport - Corporate Logo
ES#:
2827252
Mfg#:
SSXAU033
Ships on Nov 27, 2026
$1856.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B7 A4 2.0T Cat-Back Exhaust System - Resonated

ES#2827262 - SSXAU049 - B7 A4 2.0T Cat-Back Exhaust System - Resonated - 2.5" stainless steel with dual Jet 100mm polished tips - Milltek Sport - Audi

2.5" stainless steel with dual Jet 100mm polished tips Manual transmission only

Brand:
Milltek Sport - Corporate Logo
ES#:
2827262
Mfg#:
SSXAU049
Ships on Nov 27, 2026
$1837.99

This product was last offered at the strikethrough price on
08-17-2026

$1837.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Standard Replacement K03

ES#1041358 - 06D145701J - Standard Replacement K03 - Complete assembly includes the turbo and exhaust manifold - Genuine Volkswagen Audi - Audi

Complete assembly includes the turbo and exhaust manifold

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1041358
Mfg#:
06D145701J
Ships in 6 Business Days
5% off MSRP

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

$1923.99

This product was last offered at the strikethrough price on
10-26-2026

$1831.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Cat-Back Exhaust System - Sport

ES#2613544 - 15519 - Performance Cat-Back Exhaust System - Sport - Mandrel bent 3" 409 Stainless steel construction with dual tip, single exit polished tips - Magnaflow - Audi

Mandrel bent 3" 409 Stainless steel construction with dual tip, single exit polished tips

Brand:
Magnaflow - Corporate Logo
ES#:
2613544
Mfg#:
15519
Ships in 2 Business Days
$1823.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

MACH Force-Xp Axle-Back Exhaust System

ES#4500329 - 49-36445 - MACH Force-Xp Axle-Back Exhaust System - This system produces a mild sound unleashing all available horsepower and torque. - AFE - Audi

This system produces a mild sound unleashing all available horsepower and torque.

Brand:
AFE - Corporate Logo
ES#:
4500329
Mfg#:
49-36445
Back Ordered
20% off MSRP

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

$1138.99

This product was last offered at the strikethrough price on
05-27-2026

$911.00 USD
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

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

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