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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Performance Parts & Upgrades

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Carbon Fiber Engine Cover

ES#4265528 - 034-1ZZ-1004 - Carbon Fiber Engine Cover - Designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave that is perfectly matched to the X34 Carbon Fiber Air Intake. - 034Motorsport - Audi

Designed to tastefully complement the factory engine bay with a beautiful carbon fiber weave that is perfectly matched to the X34 Carbon Fiber Air Intake. 2X Entries Into Our F80 M3 Sweepstakes
For vehicles up through the 2019 model year only

Brand:
034Motorsport - Corporate Logo
ES#:
4265528
Mfg#:
034-1ZZ-1004
Ships in 3 Business Days
ON SALE! SAVE 14%
$461.00

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

$394.16 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear GreenStuff Performance Brake Pad Set

ES#4031322 - DP22254 - Rear GreenStuff Performance Brake Pad Set - Designed as a mildly upgraded pad, great for an afternoon of sporty driving. - EBC - Audi

Designed as a mildly upgraded pad, great for an afternoon of sporty driving. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
EBC - Corporate Logo
ES#:
4031322
Mfg#:
DP22254
Ships in 2 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.

$136.99

This product was last offered at the strikethrough price on
08-23-2026

$129.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Motorsport Adjustable Rear Toe Links

ES#4669425 - 034-407-1009 - Motorsport Adjustable Rear Toe Links - A direct, drop-in upgrade for the cast steel factory rear toe links - 034Motorsport - Audi

A direct, drop-in upgrade for the cast steel factory rear toe links 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4669425
Mfg#:
034-407-1009
Ships in 3 Business Days
ON SALE! SAVE 16%
$463.00

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

$388.17 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Intake Scoop & Overlay Kit

ES#3476954 - 024641ecs01KT - Carbon Fiber Intake Scoop & Overlay Kit - Full solution to give your factory intake system a performance look! - ECS - Audi

Full solution to give your factory intake system a performance look! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3476954
Mfg#:
024641ECS01KT
Ships on Jan 19, 2027
ON SALE! SAVE 10%
$427.99

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

$385.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wheel Spacer & Bolt Kit - 8mm with Ball Seat Bolts

ES#2788499 - 002411ECS04A8KT - Wheel Spacer & Bolt Kit - 8mm with Ball Seat Bolts - Includes everything you need to install our new wheel-centric spacers on two wheels - ECS - Audi

Includes everything you need to install our new wheel-centric spacers on two wheels 10X Entries Into Our F80 M3 Sweepstakes
Designed to be used with OE wheels only

Brand:
ECS - Corporate Logo
ES#:
2788499
Mfg#:
002411ECS04A8KT
Ships on Jan 5, 2027
ON SALE!
$134.99

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

$128.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Sport Shock - Priced Each

ES#4698693 - 82401319SPORT - Rear Sport Shock - Priced Each - Tighten up your Audi with these Koni shocks - Koni - Audi

Tighten up your Audi with these Koni shocks For vehicles without electronic suspension

Brand:
Koni - Corporate Logo
ES#:
4698693
Mfg#:
82401319SPORT
Ships in 6 Business Days
39% off MSRP

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

$308.99

This product was last offered at the strikethrough price on
02-27-2026

$189.99 USD
Free Shipping
on orders $49 and up

Rebuild Kit For Dynamic+ Billet Adjustable Front Sway Bar End Links

ES#4770470 - 034-402-Z050 - Rebuild Kit For Dynamic+ Billet Adjustable Front Sway Bar End Links - Rebuild kit for 034-402-4033 - 034Motorsport - Audi

Rebuild kit for 034-402-4033 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4770470
Mfg#:
034-402-Z050
Ships in 3 Business Days
ON SALE! SAVE 26%
$85.00

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

$63.27 USD
Free Shipping

Wheel Spacer Kit - 10mm (1 Pair)

ES#3570121 - MS100166 - Wheel Spacer Kit - 10mm (1 Pair) - 10mm spacers to perfectly dial in your stance or clear your big brake kit! - APR - Audi

10mm spacers to perfectly dial in your stance or clear your big brake kit! Call In Or Chat For Best Price!

Brand:
APR - Corporate Logo
ES#:
3570121
Mfg#:
MS100166
Ships on Sep 18, 2026
12% off MSRP

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

$138.99

This product was last offered at the strikethrough price on
08-23-2026

$122.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 A5/S5 RS5 Rear Adjustable Sway Bar

ES#4027362 - 022848ecs01KT - Audi B9 A4/S4 A5/S5 RS5 Rear Adjustable Sway Bar - Reduce body roll and enhance handling! - ECS - Audi

Reduce body roll and enhance handling! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4027362
Mfg#:
022848ECS01KT
Ships on Nov 11, 2026
Auto Notify
ON SALE!
$380.99

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

$361.94 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 Engine Bay Block Off Plugs - Set

ES#3667767 - 026829ECS01 - Audi B9 Engine Bay Block Off Plugs - Set - Keep your engine bay clean and pristine! - ECS - Audi

Keep your engine bay clean and pristine! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3667767
Mfg#:
026829ECS01
In Stock
ON SALE! SAVE 89%
$45.99

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

$4.88 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Racingline Sport Spring Set

ES#3570412 - VWR3141S4 - Racingline Sport Spring Set - Give your B9 S4 the ride height it deserves - The first upgrade to make to your car! - Racingline - Audi

Give your B9 S4 the ride height it deserves - The first upgrade to make to your car!

Brand:
Racingline - Corporate Logo
ES#:
3570412
Mfg#:
VWR3141S4
Ships in 6 Business Days
$338.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Dynamic+ StreetSport Front Brake Pad Set For RS+ Big Brake Package

ES#4845654 - 034-302-0025 - 034Motorsport Dynamic+ StreetSport Front Brake Pad Set For RS+ Big Brake Package - Semi-metallic pads that offer low dust and noise for comfortable everyday use, while delivering high friction, superior modulation, and exceptional stopping power! - 034Motorsport - Audi

Semi-metallic pads that offer low dust and noise for comfortable everyday use, while delivering high friction, superior modulation, and exceptional stopping power! 2X Entries Into Our F80 M3 Sweepstakes
Replacement for vehicles with 034Motorsport RS+ Big Brake Package only.

Brand:
034Motorsport - Corporate Logo
ES#:
4845654
Mfg#:
034-302-0025
In Stock
ON SALE! SAVE 10%
$375.00

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

$337.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 A5/S5 RS5 Front Adjustable Sway Bar

ES#4027361 - 022847ecs01KT - Audi B9 A4/S4 A5/S5 RS5 Front Adjustable Sway Bar - Reduce body roll and enhance handling! - ECS - Audi

Reduce body roll and enhance handling! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4027361
Mfg#:
022847ECS01KT
Ships on Jan 5, 2027
ON SALE! SAVE 10%
$374.81

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

$337.33 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

M14 Titanium Wheel Stud Kit - Burnt - Set Of 20

ES#4487741 - TISTUD20145BURN - M14 Titanium Wheel Stud Kit - Burnt - Set Of 20 - M14x1.5x75mm with conical nuts - Vargas Turbo Technologies - Audi Volkswagen

M14x1.5x75mm with conical nuts 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
4487741
Mfg#:
TISTUD20145BURN
Ships on Sep 9, 2026
$335.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Ignition Service Kit

ES#4475298 - 06M905606F4KT - Performance Ignition Service Kit - Includes six Red CTS coil packs and OEM spark plugs to service your ignition system - Assembled By ECS - Audi

Includes six Red CTS coil packs and OEM spark plugs to service your ignition system 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4475298
Mfg#:
06M905606F4KT
In Stock
$331.43 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Greenstuff Performance Brake Pad Set

ES#4031307 - DP22277 - Front Greenstuff Performance Brake Pad Set - Designed as a mildly upgraded pad, great for an afternoon of sporty driving. - EBC - Audi

Designed as a mildly upgraded pad, great for an afternoon of sporty driving. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
EBC - Corporate Logo
ES#:
4031307
Mfg#:
DP22277
Ships in 2 Business Days
$161.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.

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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