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Audi A4 Performance Downpipes

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IE ProCore Downpipe - B9 A4

ES#4904913 - IEEXCK9 - IE ProCore Downpipe - B9 A4 - Features a full and complete exhaust note with increased flow! - Integrated Engineering - Audi

Features a full and complete exhaust note with increased flow!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4904913
Mfg#:
IEEXCK9
Ships in 5 Business Days
$2199.99 USD
Free Shipping
on orders $49 and up

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

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

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

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 in 10 Business Days
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#3015657 - 8W0253115D - Exhaust Gasket - Priced Each - Between the exhaust manifold and downpipe, requires 2 - Genuine Volkswagen Audi - Audi

Between the exhaust manifold and downpipe, requires 2

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3015657
Mfg#:
8W0253115D
In Stock
$6.93 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3" High Flow Catalytic Converter

ES#3449953 - CTSEXHTP0006-CAT - 3" High Flow Catalytic Converter - Designed to seamlessly fit in place of factory catalytic converter - CTS - Audi

Designed to seamlessly fit in place of factory catalytic converter For vehicles up through 2020

Brand:
CTS - Corporate Logo
ES#:
3449953
Mfg#:
CTSEXHTP0006-CAT
Ships in 8 Business Days
ON SALE!
$279.99

This product was last offered at the strikethrough price on
09-29-2026

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Installation Kit

ES#3028723 - 8D0253115KT3 - Catalytic Converter Installation Kit - Includes the necessary hardware and gaskets to install the catalytic converter - Assembled By ECS - Audi Volkswagen

Includes the necessary hardware and gaskets to install the catalytic converter 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3028723
Mfg#:
8D0253115KT3
In Stock
ON SALE! SAVE 18%
$50.99

This product was last offered at the strikethrough price on
06-16-2026

$41.57 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Twisted Steel Down Pipe 3" 304 Stainless Steel W/ Cat

ES#4477611 - 48-36410-YC - Twisted Steel Down Pipe 3" 304 Stainless Steel W/ Cat - Includes a single high flow catalytic converter which is less restrictive than the factory converter providing maximum flow. - AFE - Audi

Includes a single high flow catalytic converter which is less restrictive than the factory converter providing maximum flow.

Brand:
AFE - Corporate Logo
ES#:
4477611
Mfg#:
48-36410-YC
Ships in 4 Business Days
20% off MSRP

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

$1441.99

This product was last offered at the strikethrough price on
11-05-2026

$1153.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sport Cat Downpipe W/200 CPSI Catalytic Converter

Delivers more power, especially in the low and mid rev range while adding a deep sporty sound. For vehicles up through 2020

Brand:
Armytrix - Corporate Logo
ES#:
4616390
Mfg#:
AUB9-CD
Ships on Nov 23, 2026
$1090.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175278 - 251130 - 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 quattro 6-speed transmission models only - To be used with 2.5" aftermarket exhaust system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175278
Mfg#:
251130
Ships on Dec 1, 2026
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Installation Kit

ES#2575492 - 1H0253115DKT1 - Catalytic Converter Installation Kit - Contains all of the hardware you need to install a new catalytic converter on your A4 - Assembled By ECS - Audi

Contains all of the hardware you need to install a new catalytic converter on your A4 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2575492
Mfg#:
1H0253115DKT1
In Stock
$68.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket

ES#2718341 - 1H0253115 - Exhaust Gasket - Seals the downpipe to the catalytic converter - Rein - Audi Volkswagen

Seals the downpipe to the catalytic converter 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2718341
Mfg#:
1H0253115
In Stock
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Downpipes

The downpipe carries exhaust gas from the hot side of your turbo to the rest of the exhaust system. Replace a faulty catted downpipe with an OEM downpipe or upgrade for more performance with our selection of aftermarket performance downpipe options.

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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