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Audi A4 Exhaust Parts & Accessories

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Oxygen Sensor - Priced Each

ES#2539127 - 1K0998262D - 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!

Brand:
Bosch - Corporate Logo
ES#:
2539127
Mfg#:
1K0998262D
In Stock
$193.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175272 - 251127R - Performance Stainless 2.5" Downpipe - High flow, stainless downpipe kit to be used with factory exhaust - Techtonics Tuning - Audi

High flow, stainless downpipe kit to be used with factory exhaust Fits automatic transmission models only - To be used with factory exhaust

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175272
Mfg#:
251127R
In Stock
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B9 A4/A5 4" Direct-Fit Exhaust Tips - Black Chrome - Pair

ES#3476949 - 019490ecs01KT - B9 A4/A5 4" Direct-Fit Exhaust Tips - Black Chrome - Pair - A pair of direct-fit exhaust tips for the B9 A4/A5. No modifications necessary - ECS - Audi

A pair of direct-fit exhaust tips for the B9 A4/A5. No modifications necessary 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3476949
Mfg#:
019490ECS01KT
Ships on Oct 13, 2026
ON SALE!
$167.98

This product was last offered at the strikethrough price on
06-13-2026

$162.94 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Catalytic Converter - Right Side

ES#2538179 - 8K0254250KXKT - Remanufactured Catalytic Converter - Right Side - Price includes a $910.00 refundable core charge - Genuine Volkswagen Audi - Audi

Price includes a $910.00 refundable core charge From the 2010 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2538179
Mfg#:
8K0254250KXKT
Ships in 8 Business Days
$3911.99

This product was last offered at the strikethrough price on
08-31-2026

$3894.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Catalytic Converter

ES#2739743 - 8K0254253HXKT - Remanufactured Catalytic Converter - Includes a $210 refundable core charge - Genuine Volkswagen Audi - Audi

Includes a $210 refundable core charge Up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2739743
Mfg#:
8K0254253HXKT
Ships in 2 Business Days
$3787.99

This product was last offered at the strikethrough price on
08-31-2026

$3767.99 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
$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger Installation Kit

ES#4685241 - 06L253039IKT - Turbocharger Installation Kit - All hardware & gaskets that you would need to install a turbocharger - Genuine Volkswagen Audi - Audi

All hardware & gaskets that you would need to install a turbocharger

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4685241
Mfg#:
06L253039IKT
Ships in 2 Business Days
$217.99

This product was last offered at the strikethrough price on
08-31-2026

$216.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Catalytic Converter

ES#2535499 - 8E0254200QXKT - Remanufactured Catalytic Converter - Price includes a $252 refundable core charge - Genuine Volkswagen Audi - Audi

Price includes a $252 refundable core charge

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2535499
Mfg#:
8E0254200QXKT
Ships in 8 Business Days
$3641.70

This product was last offered at the strikethrough price on
08-31-2026

$3623.53 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Catalytic Converter - Left Side

ES#2538178 - 8K0254200KXKT - Remanufactured Catalytic Converter - Left Side - Price includes $300 refundable core charge - Genuine Volkswagen Audi - Audi

Price includes $300 refundable core charge From the 2010 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2538178
Mfg#:
8K0254200KXKT
In Stock
$3590.99

This product was last offered at the strikethrough price on
08-31-2026

$3576.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 2.0T Valved Exhaust System - Cat Back

ES#4488077 - 021275ECS01 - Audi B9 A4 2.0T Valved Exhaust System - Cat Back - Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! - ECS - Audi

Max gains of +16 WHP and +17 WTQ on our B9 A4 equipped with a Luft-Technik intake, ECS Intercooler/charge pipes, and a stage 1 tune! 10X Entries Into Our F80 M3 Sweepstakes
For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
4488077
Mfg#:
021275ECS01
Ships on Nov 13, 2026
ON SALE!
Starting at $1156.67 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cat-Back Exhaust System

ES#3175519 - 252561M - 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 For use with factory downpipe

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175519
Mfg#:
252561M
Ships in 9 Business Days
$687.99 USD

Cat-Back Exhaust System - Dual Exit Single Tips

ES#2848070 - CTSEXHCB0013 - Cat-Back Exhaust System - Dual Exit Single Tips - 2.5" stainless steel with dual 3" polished stainless tips - CTS - Audi

2.5" stainless steel with dual 3" polished stainless tips

Brand:
CTS - Corporate Logo
ES#:
2848070
Mfg#:
CTSEXHCB0013
Ships in 7 Business Days
$1099.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Self-Locking Nut - Priced Each

ES#2588753 - N90369001 - Self-Locking Nut - Priced Each - Install new hardware with your new parts. M10x1.5 - Rein - Audi BMW Volkswagen

Install new hardware with your new parts. M10x1.5 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Used to secure the catalyst/downpipe to the turbo

Brand:
Rein - Corporate Logo
ES#:
2588753
Mfg#:
N90369001
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo B6 A4 High-flow Cat Pipe

ES#4043061 - CTSEXHTP0002B6CA - CTS Turbo B6 A4 High-flow Cat Pipe - Seamlessly fits in place of your restrictive stock cat - Features 3 stainless steel piping, smooth mandrel bends, and two 02 sensor bungs - CTS - Audi

Seamlessly fits in place of your restrictive stock cat - Features 3″ stainless steel piping, smooth mandrel bends, and two 02 sensor bungs

Brand:
CTS - Corporate Logo
ES#:
4043061
Mfg#:
CTSEXHTP0002B6CA
Ships in 7 Business Days
$249.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

MACH Force-Xp Stainless Steel Axle-Back Exhaust System

ES#4220054 - 49-36419-P - MACH Force-Xp Stainless Steel Axle-Back Exhaust System - Resonated 3" to 2-1/2" 304 Stainless Steel with polished tips - AFE - Audi

Resonated 3" to 2-1/2" 304 Stainless Steel with polished tips

Brand:
AFE - Corporate Logo
ES#:
4220054
Mfg#:
49-36419-P
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.

$1311.99

This product was last offered at the strikethrough price on
09-19-2026

$1049.00 USD

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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