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Audi S4 Performance Parts & Upgrades

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Supertech Stainless Intake Valve - Priced Each

ES#3624375 - ST-AIVN-1103 - Supertech Stainless Intake Valve - Priced Each - Standard sized valve head diameter, factory triple groove keeper setup - Supertech - Audi Volkswagen

Standard sized valve head diameter, factory triple groove keeper setup affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*Valves priced individually - For 1.8T - qty 12 needed / For 2.7T - qty 18 needed - Please see long description for additional valve seal/keeper informa

Brand:
Supertech - Corporate Logo
ES#:
3624375
Mfg#:
ST-AIVN-1103
In Stock
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forged Narrow Superlite 6R Front Brake Kit - 12.88"

ES#3701618 - 140-14487-R - Forged Narrow Superlite 6R Front Brake Kit - 12.88" - Featuring red 6R six piston caliper and 12.88" GT slotted rotors - Delivers the ultimate combination for braking power and style! - Wilwood - Audi

Featuring red 6R six piston caliper and 12.88" GT slotted rotors - Delivers the ultimate combination for braking power and style! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wilwood - Corporate Logo
ES#:
3701618
Mfg#:
140-14487-R
In Stock at Vendor
$2217.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Front Axle Delete Plug Set - Audi B5/B6/B7 - M16 Thread

ES#4375715 - 012417LA01 - Front Axle Delete Plug Set - Audi B5/B6/B7 - M16 Thread - Easily allows the removal of front axles when converting your B5/B6/B7 to RWD (rear wheel drive) from Quattro - ECS - Audi

Easily allows the removal of front axles when converting your B5/B6/B7 to RWD (rear wheel drive) from Quattro affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8D-1-050001, split is in the 2001 model year

Brand:
ECS - Corporate Logo
ES#:
4375715
Mfg#:
012417LA01
Ships on Aug 3, 2026
Auto Notify
ON SALE! SAVE 25%
$133.99

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

$100.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 S4/S5 Left Side Engine Bay Cover - Matte Black

ES#4335425 - 006929la01KT - Audi B8/B8.5 S4/S5 Left Side Engine Bay Cover - Matte Black - Cover up unsightly under hood components with style! - ECS - Audi

Cover up unsightly under hood components with style! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4335425
Mfg#:
006929LA01KT
Ships on Aug 31, 2026
Auto Notify
ON SALE! SAVE 25%
$127.99

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

$95.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

B9 A4/S4 Carbon Fiber Inlet Scoop

ES#3537354 - 024641ecs02KT - B9 A4/S4 Carbon Fiber Inlet Scoop - Channel air to your intake with performance syle! - ECS - Audi

Channel air to your intake with performance syle! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3537354
Mfg#:
024641ECS02KT
Ships on Nov 11, 2026
ON SALE! SAVE 10%
$271.61

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

$244.45 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Shifter Mounting Plate

ES#4304742 - B8012A0 - Billet Shifter Mounting Plate - Take your shift to the next level - JXB Performance - Audi

Take your shift to the next level affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For manual transmissions only.

Brand:
JXB Performance - Corporate Logo
ES#:
4304742
Mfg#:
B8012A0
In Stock
$199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

KW V1 Series Coilover Kit

ES#2102302 - 10210078 - KW V1 Series Coilover Kit - Variant 1 coilovers offer the best balance between sporty driving and comfort - KW Suspension - Audi

Variant 1 coilovers offer the best balance between sporty driving and comfort affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits avant models without factory EDC. Range of lowering is 0.8-1.5" in the front and 0.4-1.5" in the rear.

Brand:
KW Suspension - Corporate Logo
ES#:
2102302
Mfg#:
10210078
Ships in 4 Business Days
$2194.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 3 - Slotted Rotors (345x30)

ES#4414450 - ES2953879KT - Front Big Brake Kit - Stage 3 - Slotted Rotors (345x30) - Upgrade your brake system to the 4-piston Brembo Q5 calipers. Includes ECS V5 Slotted brake rotors. - ECS - Audi

Upgrade your brake system to the 4-piston Brembo Q5 calipers. Includes ECS V5 Slotted brake rotors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4414450
Mfg#:
ES2953879KT
Ships in 5 Business Days
$2192.39 USD
This product is lifetime replacement eligible Partial Replacement

Front Big Brake Kit - Stage 3 - Cross Drilled & Slotted Rotors (345x30)

ES#3537601 - 025997ECS0541KT - Front Big Brake Kit - Stage 3 - Cross Drilled & Slotted Rotors (345x30) - Upgrade your brake system to the 4-piston Brembo Q5 calipers. Includes ECS V5 brake rotors. - ECS - Audi

Upgrade your brake system to the 4-piston Brembo Q5 calipers. Includes ECS V5 brake rotors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3537601
Mfg#:
025997ECS0541KT
Ships in 5 Business Days
$2184.39 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Front Big Brake Kit - Stage 2 - Cross Drilled & Slotted Rotors (345x30)

ES#2952039 - 014366ecs02kt - Front Big Brake Kit - Stage 2 - Cross Drilled & Slotted Rotors (345x30) - Upgrade your brake system to the 4-piston Brembo Q5 calipers. Includes ECS V5 brake rotors. - ECS - Audi

Upgrade your brake system to the 4-piston Brembo Q5 calipers. Includes ECS V5 brake rotors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2952039
Mfg#:
014366ECS02KT
Ships in 5 Business Days
$2184.39 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Motorsport Street Density Motor Mount Pair

ES#2864597 - 034-509-0006 - Motorsport Street Density Motor Mount Pair - The ultimate in performance and durability - 034Motorsport - Audi

The ultimate in performance and durability affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2864597
Mfg#:
034-509-0006
In Stock
$364.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Cross Drilled & Slotted Brake Rotors - Pair (330x22)

ES#3155009 - EBR1015XPR - Rear Cross Drilled & Slotted Brake Rotors - Pair (330x22) - Upgrade to a zinc plated slotted / cross-drilled rotor for improved braking - Power Stop - Audi

Upgrade to a zinc plated slotted / cross-drilled rotor for improved braking affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Power Stop - Corporate Logo
ES#:
3155009
Mfg#:
EBR1015XPR
Ships in 1 Business Day
$311.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 3 Plus IE Performance ECU Tune - Includes Stage 3 TCU Tune & POWERlink Cable

ES#4493831 - IESOVZ14TCU - Stage 3 Plus IE Performance ECU Tune - Includes Stage 3 TCU Tune & POWERlink Cable - Easy upgrade into hybrid turbo power levels delivering up to 715HP and 678TQ. - Integrated Engineering - Audi

Easy upgrade into hybrid turbo power levels delivering up to 715HP and 678TQ. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.

Brand:
Integrated Engineering - Corporate Logo
ES#:
4493831
Mfg#:
IESOVZ14TCU
In Stock
$2177.99 USD
Free Shipping

ARM Motorsports Intake - 3.5" Inlet

ES#4745447 - 30TINT3.5 - ARM Motorsports Intake - 3.5" Inlet - For use with a 3.5" throttle body inlet. - ARM Motorsports - Audi

For use with a 3.5" throttle body inlet. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ARM Motorsports - Corporate Logo
ES#:
4745447
Mfg#:
30TINT3.5
In Stock
$197.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Front Upper Strut Mount - Pair

ES#3622332 - 034-601-1002-tKT - Density Line Front Upper Strut Mount - Pair - Approximately twice as stiff as stock, for increased firmness and vehicle control - 034Motorsport - Audi

Approximately twice as stiff as stock, for increased firmness and vehicle control affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3622332
Mfg#:
034-601-1002-TKT
In Stock
$90.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Pressure Fuel Pump Tool

ES#4730319 - 034-106-Z068 - High Pressure Fuel Pump Tool - Designed to make the disassembly and reassembly of the high pressure fuel pump a breeze! - 034Motorsport - Audi Porsche

Designed to make the disassembly and reassembly of the high pressure fuel pump a breeze! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4730319
Mfg#:
034-106-Z068
In Stock
$26.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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