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Audi A4 Exhaust Parts & Accessories

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Exhaust Manifold Gasket

ES#251238 - 058253039L - Exhaust Manifold Gasket - Seals the exhaust manifold to the cylinder head - Victor Reinz - Audi Volkswagen

Seals the exhaust manifold to the cylinder head

Brand:
Victor Reinz - Corporate Logo
ES#:
251238
Mfg#:
058253039L
In Stock
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Catalytic Converter Kit

ES#2586344 - 8E0131089DXKT - Catalytic Converter Kit - Includes related hardware and gaskets - Assembled By ECS - Audi

Includes related hardware and gaskets 10X Entries For Our 25th Anniversary Sweepstakes!
Not legal for sale or use in the state of New York or California

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586344
Mfg#:
8E0131089DXKT
Back Ordered
$296.99

This product was last offered at the strikethrough price on
01-27-2026

$286.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175263 - 251123 - 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 FWD 5-speed transmission models only - To be used with 2.5" aftermarket exhaust system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175263
Mfg#:
251123
Ships on Aug 12, 2026
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175268 - 251125R - 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 quattro 5-speed transmission models only - To be used with factory exhaust

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175268
Mfg#:
251125R
Ships on Aug 12, 2026
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175265 - 251124 - 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#:
3175265
Mfg#:
251124
Ships on Aug 12, 2026
$286.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

ES#3175266 - 251124R - 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 system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175266
Mfg#:
251124R
Ships on Aug 12, 2026
$286.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Turbo Securing Bolt - Longitudinal 1.8T K03/K04 - Priced Each

ES#4880739 - 034-145-B001 - Turbo Securing Bolt - Longitudinal 1.8T K03/K04 - Priced Each - These OEM bolts will ensure your K03/K04 turbo stays properly mounted to the exhaust manifold as Volkswagen and Audi intended. Three (3) Required Per Vehicle. - 034Motorsport - Audi

These OEM bolts will ensure your K03/K04 turbo stays properly mounted to the exhaust manifold as Volkswagen and Audi intended. Three (3) Required Per Vehicle.

Brand:
034Motorsport - Corporate Logo
ES#:
4880739
Mfg#:
034-145-B001
In Stock
$15.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front & Rear Oxygen Sensors - Pair

Keep your engine running efficiently 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bosch - Corporate Logo
ES#:
5481129
Mfg#:
1K0998262TKT
In Stock
$354.99

This product was last offered at the strikethrough price on
07-08-2026

$281.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Stainless 2.5" Downpipe

High flow, stainless downpipe kit to be used with factory exhaust Fits quattro, automatic transmission models only - To be used with factory 55mm exhaust system

Brand:
Techtonics Tuning - Corporate Logo
ES#:
3175306
Mfg#:
251228R
Ships on Aug 12, 2026
$275.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger Installation Kit W/ Exhaust Manifold Studs

ES#2587508 - 06F253039FKT2 - Turbocharger Installation Kit W/ Exhaust Manifold Studs - Includes all gaskets and hardware - Genuine Volkswagen Audi - Audi

Includes all gaskets and hardware

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2587508
Mfg#:
06F253039FKT2
In Stock
$288.99

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

$260.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Allen Bolt (5mm) - Priced Each

ES#2770514 - N01474011 - Allen Bolt (5mm) - Priced Each - Stainless steel for extra corrosion resistance. M6x16 - ECS - Audi Volkswagen

Stainless steel for extra corrosion resistance. M6x16 10X Entries For Our 25th Anniversary Sweepstakes!

Engine code ATW. Secures the connecting pipe to the EGR valve

Brand:
ECS - Corporate Logo
ES#:
2770514
Mfg#:
N01474011
In Stock
ON SALE! SAVE 25%
$0.99

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

$0.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

66.5MM Exhaust Clamp - Priced Each

ES#3199866 - CHC66.5SS - 66.5MM Exhaust Clamp - Priced Each - Stainless band clamp used in various Milltek Sport exhaust systems - 66.5mm - Milltek Sport - Audi

Stainless band clamp used in various Milltek Sport exhaust systems - 66.5mm

Brand:
Milltek Sport - Corporate Logo
ES#:
3199866
Mfg#:
CHC66.5SS
Back Ordered
Auto Notify
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Gasket - Priced Each

ES#2718617 - 078131120K - EGR Valve Gasket - Priced Each - Ensure a proper seal - Elring - Audi Volkswagen

Ensure a proper seal 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2718617
Mfg#:
078131120K
In Stock
$5.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTS Turbo B5 A4 High-flow Cat Pipe

ES#4043063 - CTSEXHTP001B5CA - CTS Turbo B5 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#:
4043063
Mfg#:
CTSEXHTP001B5CA
Special Order: No Guaranteed ETA
$249.99 USD
Free Shipping
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 2X Entries For Our 25th Anniversary Sweepstakes!
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
In Stock at Vendor
$127.99

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

$123.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket

ES#4147623 - 8E0253115D - Exhaust Gasket - Located between the turbo & catalytic converter - Elring - Audi

Located between the turbo & catalytic converter 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
4147623
Mfg#:
8E0253115D
In Stock
$8.99

This product was last offered at the strikethrough price on
03-24-2026

$7.94 USD
Free Shipping
on orders $49 and up
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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