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Audi S4 Most Popular Parts

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APR Upgraded Ignition Coils - Red - Set Of Six

ES#4030593 - ms100192KT2 - APR Upgraded Ignition Coils - Red - Set Of Six - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - APR - Audi

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! Call In Or Chat For Best Price!
CARB certified for sale in all 50 states

Brand:
APR - Corporate Logo
ES#:
4030593
Mfg#:
MS100192KT2
EO#:
D-783-5
In Stock
ON SALE! SAVE 10%
$317.99

This product was last offered at the strikethrough price on
09-28-2026

$285.93 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Diverter Valve

ES#3640324 - 06M145710F - Diverter Valve - Cure the boost leak and restore power - Genuine Volkswagen Audi - Audi

Cure the boost leak and restore power

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3640324
Mfg#:
06M145710F
Ships in 10 Business Days
10% off MSRP

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

$178.33

This product was last offered at the strikethrough price on
10-21-2026

$160.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mechatronics Repair Kit

ES#4755519 - 0B5398009F - Mechatronics Repair Kit - Includes the valve block wiring and speed sensor with cable - Bremmen Parts - Audi

Includes the valve block wiring and speed sensor with cable 10X Entries Into Our F80 M3 Sweepstakes

For vehicles with 7-speed S-Tronic transmissions

Brand:
Bremmen Parts - Corporate Logo
ES#:
4755519
Mfg#:
0B5398009F
In Stock
ON SALE! SAVE 20%
$531.99

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

$425.13 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EA839 2.9T/3.0T Billet Oil Filter Housing - Black

ES#3504941 - 024354ECS01-01 - EA839 2.9T/3.0T Billet Oil Filter Housing - Black - Ditch the easily broken/stripped plastic oil filter cap for a durable billet upgrade - ECS - Audi

Ditch the easily broken/stripped plastic oil filter cap for a durable billet upgrade 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3504941
Mfg#:
024354ECS01-01
In Stock
ON SALE! SAVE 27%
$136.99

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

$99.46 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#3679588 - 06E121018K - Water Pump - New water pump with coolant housing, does not include pulley - Genuine Volkswagen Audi - Audi Volkswagen

New water pump with coolant housing, does not include pulley Fits from the 2013 model year (facelift)

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3679588
Mfg#:
06E121018K
Ships in 1-2 days
14% off MSRP

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

$311.67

This product was last offered at the strikethrough price on
10-21-2026

$269.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front 2-Piece Brake Rotors - Pair (345x30)

ES#2602983 - 000690ECS01AKT - Front 2-Piece Brake Rotors - Pair (345x30) - Direct bolt-on replacement - 25% less weight! - ECS - Audi Porsche

Direct bolt-on replacement - 25% less weight! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2602983
Mfg#:
000690ECS01AKT
Ships on Apr 1, 2027
ON SALE! SAVE 10%
$1019.99

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

$917.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear B8 Sport Shock - Priced Each

ES#2731861 - 24-145992 - Rear B8 Sport Shock - Priced Each - Fits the left and right side - Bilstein - Audi

Fits the left and right side 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#:
2731861
Mfg#:
24-145992
In Stock
$155.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Special Active Shock Absorber - Priced Each

ES#3560586 - 80451265 - Rear Special Active Shock Absorber - Priced Each - Superior handling without compromising ride quality - Koni - Audi

Superior handling without compromising ride quality Vehicles equipped with Electronic Damping Control (EDC) will lose factory shock damping and receive a system error code

Brand:
Koni - Corporate Logo
ES#:
3560586
Mfg#:
80451265
In Stock
38% off MSRP

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

$261.21

This product was last offered at the strikethrough price on
08-25-2026

$160.78 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

D3S 6000K XB HID Bulb - Pair

ES#4212783 - MM.N.077 - D3S 6000K XB HID Bulb - Pair - Quality replacement xenon bulbs from Morimoto - Morimoto - Audi Volkswagen

Quality replacement xenon bulbs from Morimoto

Brand:
Morimoto - Corporate Logo
ES#:
4212783
Mfg#:
MM.N.077
In Stock
$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Valve Cover Bolt - Set Of 14

ES#4765688 - 06B103831J-14 - Valve Cover Bolt - Set Of 14 - Full set used to secure the valve cover to the cylinder head - Bremmen Parts - Audi Volkswagen

Full set used to secure the valve cover to the cylinder head 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4765688
Mfg#:
06B103831J-14
In Stock
ON SALE! SAVE 15%
$88.99

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

$75.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi/Porsche Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M14 Ball Joints)

ES#4389690 - 006418LA01 - Audi/Porsche Thrust Arm Monoball Upgrade - Pre-Installed in Meyle HD Arms (M14 Ball Joints) - Eliminate deflection caused by stock rubber bushings! - ECS - Audi Porsche

Eliminate deflection caused by stock rubber bushings! 10X Entries Into Our F80 M3 Sweepstakes

Fits models from production date 11/3/2009 (M14 Ball Joints)

Brand:
ECS - Corporate Logo
ES#:
4389690
Mfg#:
006418LA01
In Stock
ON SALE!
$746.99

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

$724.58 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B6 S4 Catback Exhaust

ES#4756568 - 041486ECS01 - Audi B6 S4 Catback Exhaust - Choose your own configuration along with your choice of exhaust tips and more! - ECS - Audi

Choose your own configuration along with your choice of exhaust tips and more! 10X Entries Into Our F80 M3 Sweepstakes

For Sedan models only.

Brand:
ECS - Corporate Logo
ES#:
4756568
Mfg#:
041486ECS01
Ships in 5 Business Days
ON SALE!
Starting at $833.33 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi & VW Direct Injection Carbon Cleaning Kit - Level 1

ES#4000811 - 034-108-Z054KT - Audi & VW Direct Injection Carbon Cleaning Kit - Level 1 - Featuring Bimmerhelp's direct injection port cleaning tool, walnut shell blast media (15lbs), and a 'blast out of a bucket' media blaster attachment - Assembled By ECS - Audi Volkswagen

Featuring Bimmerhelp's direct injection port cleaning tool, walnut shell blast media (15lbs), and a 'blast out of a bucket' media blaster attachment 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
4000811
Mfg#:
034-108-Z054KT
Back Ordered
ON SALE!
$208.31 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Front V5 Dimpled & Slotted Brake Rotors - Set (345x30)

ES#4668212 - 8K0615301M-XS - Front V5 Dimpled & Slotted Brake Rotors - Set (345x30) - Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. - ECS - Audi

Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4668212
Mfg#:
8K0615301M-XS
In Stock
ON SALE!
$521.99

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

$486.38 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Performance Coilover System

ES#3187951 - 50356 - Street Performance Coilover System - Finally, A performance coilover suspension system for your B9 Audi - Offering unrivaled comfort and performance! - H&R - Audi

Finally, A performance coilover suspension system for your B9 Audi - Offering unrivaled comfort and performance! We Price Match - Give Us A Call or Chat!
For vehicles without Sport Suspension or Magnetic Ride Control

Brand:
H&R - Corporate Logo
ES#:
3187951
Mfg#:
50356
In Stock
10% off MSRP

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

$1980.00

This product was last offered at the strikethrough price on
10-01-2026

$1782.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

19" APEX VS-5RS Wheels - Square Set Of Four

ES#4699683 - vs5rs199sqanKT - 19" APEX VS-5RS Wheels - Square Set Of Four - Forged 19x9" ET25 5X112 - Anthracite - APEX Wheels - Audi BMW

Forged 19x9" ET25 5X112 - Anthracite 2X Entries Into Our F80 M3 Sweepstakes

Brand:
APEX Wheels - Corporate Logo
ES#:
4699683
Mfg#:
VS5RS199SQANKT
Ships in 6 Business Days
$3556.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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