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Audi S4 Most Popular Parts

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Performance Kevlar Reinforced Supercharger Belt

ES#4043249 - 7PK1310ECS - Performance Kevlar Reinforced Supercharger Belt - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - Audi
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. 10X Entries Into Our F80 M3 Sweepstakes
For use with 187.3mm crank pulley & OEM supercharger pulley only

Brand:
ECS - Corporate Logo
ES#:
4043249
Mfg#:
7PK1310ECS
In Stock
$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front RedStuff Performance Front Brake Pad Set

ES#520368 - DP31513C - Front RedStuff Performance Front Brake Pad Set - High performance street pad featuring Kevlar technology, includes wear sensors - EBC - Audi

High performance street pad featuring Kevlar technology, includes wear sensors 2X Entries Into Our F80 M3 Sweepstakes

For use with the Stage 3 Audi RS Big Brake Kit

Brand:
EBC - Corporate Logo
ES#:
520368
Mfg#:
DP31513C
In Stock
5% off MSRP

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

$374.99

This product was last offered at the strikethrough price on
10-25-2026

$355.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B8 Sport Front Strut Kit

ES#4430366 - 24-145985KT - B8 Sport Front Strut Kit - Give your vehicle a more aggressive feel - Bilstein - Audi

Give your vehicle a more aggressive feel 10X Entries Into Our F80 M3 Sweepstakes

Vehicles equipped with Electronic Damping Control (EDC) will lose shock dampening and receive a system error code

Brand:
Bilstein - Corporate Logo
ES#:
4430366
Mfg#:
24-145985KT
Ships in 1 Business Day
$844.99

This product was last offered at the strikethrough price on
10-06-2026

$590.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

18" Style 020 Wheels - Set Of Four

ES#2719034 - 020-12KT6 - 18" Style 020 Wheels - Set Of Four - 18"x8" ET35 5x112 - Silver with Machined Lip - Alzor - Audi Volkswagen

18"x8" ET35 5x112 - Silver with Machined Lip 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Alzor - Corporate Logo
ES#:
2719034
Mfg#:
020-12KT6
In Stock
ON SALE! SAVE 25%
$1176.68

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

$883.26 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

18" Style 020 Wheels - Set Of Four

ES#2739909 - 020-24KT2 - 18" Style 020 Wheels - Set Of Four - 18x8.5 ET30 5x112 57.1CB - Gunmetal with Polished Lip - Alzor - Audi Volkswagen

18x8.5 ET30 5x112 57.1CB - Gunmetal with Polished Lip 10X Entries Into Our F80 M3 Sweepstakes
Wheel spacers may be necessary for front caliper clearance

Brand:
Alzor - Corporate Logo
ES#:
2739909
Mfg#:
020-24KT2
In Stock
ON SALE! SAVE 25%
$1176.99

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

$883.26 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Lug Bolts (Set Of 10) - 27mm

ES#5396561 - s17d27r13znniKT - ECS Lug Bolts (Set Of 10) - 27mm - Black zinc coated 27mm (OEM Length) ball set wheel bolts - ECS - Audi Volkswagen

Black zinc coated 27mm (OEM Length) ball set wheel bolts 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
5396561
Mfg#:
S17D27R13ZNNIKT
In Stock
ON SALE! SAVE 25%
$44.99

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

$33.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ball Seat Wheel Bolt - 14x1.5x40mm - Priced Per Pair

ES#4164435 - S17D40R13ZNNI2 - Ball Seat Wheel Bolt - 14x1.5x40mm - Priced Per Pair - Black zinc coated wheel bolts made specifically for OE wheels - ECS - Audi Volkswagen

Black zinc coated wheel bolts made specifically for OE wheels 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4164435
Mfg#:
S17D40R13ZNNI2
In Stock
ON SALE! SAVE 25%
$12.99

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

$9.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Radiator Upgrade

ES#4900053 - 034-102-1005 - 034Motorsport Radiator Upgrade - Replace your factory radiator with a larger, more efficient radiator to improve cooling capacity and maintain peak performance. - 034Motorsport - Audi

Replace your factory radiator with a larger, more efficient radiator to improve cooling capacity and maintain peak performance. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4900053
Mfg#:
034-102-1005
In Stock
$800.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front 2-Piece Brake Rotors - Pair (350x34)

ES#3493799 - 023938ecs01KT - Front 2-Piece Brake Rotors - Pair (350x34) - Direct bolt-on replacement - 16% less weight! - ECS - Audi

Direct bolt-on replacement - 16% less weight! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3493799
Mfg#:
023938ECS01KT
In Stock
ON SALE! SAVE 16%
$1052.99

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

$879.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Roller Rocker Arm - Priced Each

ES#3640370 - 0P2109417 - Roller Rocker Arm - Priced Each - Keep your lobes intact - Genuine Volkswagen Audi - Audi

Keep your lobes intact

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3640370
Mfg#:
0P2109417
In Stock
Limited Qty Sale
$43.99

This product was last offered at the strikethrough price on
08-19-2026

$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear YellowStuff Performance Brake Pad Set

ES#4031325 - DP42254R - Rear YellowStuff Performance Brake Pad Set - EBC's premium sport street pad that offers high friction levels and heat fade resistance - EBC - Audi

EBC's premium sport street pad that offers high friction levels and heat fade resistance 2X Entries Into Our F80 M3 Sweepstakes

Brand:
EBC - Corporate Logo
ES#:
4031325
Mfg#:
DP42254R
In Stock
5% off MSRP

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

$151.59

This product was last offered at the strikethrough price on
10-25-2026

$144.01 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 Front Lip Spoiler - Gloss Black & Grille Accent Set - Gloss Black

ES#4751328 - 028802ECS01EBKT - Audi B9 A4/S4 Front Lip Spoiler - Gloss Black & Grille Accent Set - Gloss Black - Upgrade your exterior styling! - Enthusiast Bundles - Audi

Upgrade your exterior styling! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!
Fits up to 2019 model year with *pre-facelift* front bumpers

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751328
Mfg#:
028802ECS01EBKT
In Stock
ON SALE! SAVE 39%
$657.78

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

$399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" Style 040 Wheels - Set Of Four

ES#2771265 - 040-7KT - 19" Style 040 Wheels - Set Of Four - 19"x8.5" ET35 66.6CB 5x112 - Hyper Silver/Machined Face - Alzor - Audi BMW MINI

19"x8.5" ET35 66.6CB 5x112 - Hyper Silver/Machined Face 10X Entries Into Our F80 M3 Sweepstakes
Wheel spacers may be necessary for front caliper clearance

Brand:
Alzor - Corporate Logo
ES#:
2771265
Mfg#:
040-7KT
Ships on Jan 11, 2027
ON SALE! SAVE 25%
$1300.00

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

$975.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Transfer Case Oil - priced each

ES#2726939 - G055515A2 - Transfer Case Oil - priced each - For proper maintenance of your transfer case - Genuine Volkswagen Audi - Audi Volkswagen

For proper maintenance of your transfer case For vehicles with Sport Diff Only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2726939
Mfg#:
G055515A2
Ships in 8 Business Days
$38.99 USD
Free Shipping
on orders $49 and up

034Motorsport 3.0T Supercharger Pulley Upgrade

ES#3432403 - 034-145-Z034 - 034Motorsport 3.0T Supercharger Pulley Upgrade - Increased horsepower and torque throughout the powerband when paired with Stage 2 Performance Software. - 034Motorsport - Audi

Increased horsepower and torque throughout the powerband when paired with Stage 2 Performance Software. 2X Entries Into Our F80 M3 Sweepstakes
*3.0 TFSI Performance Software is sold separately and required in order for this pulley to yield a performance benefit.*

Brand:
034Motorsport - Corporate Logo
ES#:
3432403
Mfg#:
034-145-Z034
In Stock
$199.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4/S5 3.0T Performance Throttle Body Upgrade

ES#4382060 - 007911LA02KT - Audi B8 S4/S5 3.0T Performance Throttle Body Upgrade - Unleash the true potential of your supercharger! - ECS - Audi

Unleash the true potential of your supercharger! 10X Entries Into Our F80 M3 Sweepstakes
10X Entries For Our Spin To Win Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4382060
Mfg#:
007911LA02KT
In Stock
ON SALE! SAVE 20%
$642.99

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

$514.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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