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Audi S4 Most Popular Parts

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Audi B9 S4 Tunnel Street Shield Aluminum Skid Plate

ES#3610310 - 023781ecs02KT - Audi B9 S4 Tunnel Street Shield Aluminum Skid Plate - Protect your vehicle's tunnel and improve aerodynamics - ECS - Audi

Protect your vehicle's tunnel and improve aerodynamics affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3610310
Mfg#:
023781ECS02KT
Ships in 1-2 days
ON SALE! SAVE 10%
$354.99

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

$319.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Injector Installation Kit

ES#5434422 - 06J998907BKT5 - Fuel Injector Installation Kit - Includes the necessary o-rings and clips to replace the fuel injectors - Assembled By ECS - Audi

Includes the necessary o-rings and clips to replace the fuel injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
5434422
Mfg#:
06J998907BKT5
In Stock
ON SALE!
$185.99

This product was last offered at the strikethrough price on
02-25-2026

$171.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Bearing - Priced Each

ES#4768472 - 8W0407625G - Wheel Bearing - Priced Each - Fits the left and right side - OPTITEC - Audi

Fits the left and right side affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
OPTITEC
ES#:
4768472
Mfg#:
8W0407625G
In Stock at Vendor
$98.99

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

$96.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ZTF-LP01 19" Flowform Wheel - Satin Black - Set Of Four

ES#4736455 - 0346040104sbKT - ZTF-LP01 19" Flowform Wheel - Satin Black - Set Of Four - 19"x9.3" ET38 CB66.6 5x112 Satin Black - 034Motorsport - Audi

19"x9.3" ET38 CB66.6 5x112 Satin Black affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4736455
Mfg#:
0346040104SBKT
Ships in 2 Business Days
$2228.00 USD
This product is lifetime replacement eligible Lifetime Replacement

18" ZTF-01 Forged Wheels - Set Of Four

ES#4305534 - 034-604-0001KT - 18" ZTF-01 Forged Wheels - Set Of Four - 18x8.5" ET45 5x112 - Anthracite Grey - 034Motorsport - Audi BMW Volkswagen

18x8.5" ET45 5x112 - Anthracite Grey affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4305534
Mfg#:
034-604-0001KT
Back Ordered
$2228.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Upper Timing Chain - Center

ES#3241100 - 06E109465BC - Upper Timing Chain - Center - Turns the camshaft relay sprockets from the crankshaft - Iwis - Audi

Turns the camshaft relay sprockets from the crankshaft affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Iwis - Corporate Logo
ES#:
3241100
Mfg#:
06E109465BC
In Stock
$105.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Door Latch Assembly - Left

ES#4423016 - 8K0839015A - Rear Door Latch Assembly - Left - Common repair for issues with intermittent alarm problems & door locking - URO - Audi Porsche

Common repair for issues with intermittent alarm problems & door locking affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Up to production date 11/2/2009

Brand:
URO - Corporate Logo
ES#:
4423016
Mfg#:
8K0839015A
In Stock
$116.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Suspension Install Kit

ES#2762760 - 8K0513353EKT1 - Rear Suspension Install Kit - All hardware and mounts necessary to install new suspension - Assembled By ECS - Audi

All hardware and mounts necessary to install new suspension affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2762760
Mfg#:
8K0513353EKT1
In Stock
ON SALE!
$258.56

This product was last offered at the strikethrough price on
05-01-2026

$246.96 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spark Plug - Priced Each

ES#3613000 - 101905631G - Spark Plug - Priced Each - Bosch OE Finewire Platinum spark plug - 2X longer service life compared to standard copper plugs! FR5KPP332S - Bosch - Audi

Bosch OE Finewire Platinum spark plug - 2X longer service life compared to standard copper plugs! FR5KPP332S affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
3613000
Mfg#:
101905631G
In Stock
$18.99

This product was last offered at the strikethrough price on
03-16-2026

$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Bass Speaker (Woofer)

ES#461621 - 8T0035412D - Rear Bass Speaker (Woofer) - Located in the center of the rear parcel shelf - Genuine Volkswagen Audi - Audi

Located in the center of the rear parcel shelf affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For sedan models with Bang & Olufsen sound systems

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
461621
Mfg#:
8T0035412D
Ships in 1-2 days
8% off MSRP

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

$241.99

This product was last offered at the strikethrough price on
06-19-2026

$221.99 USD
Free Shipping
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 HPS Performance Brake Pad Set

ES#2092631 - HB641F.696 - Front HPS Performance Brake Pad Set - One of the best-selling all around brake pads - Hawk - Audi
ECS Tuning recommends this product.

One of the best-selling all around brake pads affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hawk - Corporate Logo
ES#:
2092631
Mfg#:
HB641F.696
In Stock at Vendor
$200.99 USD
Free Shipping
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

Blower Motor

ES#4759366 - 8T1820021 - Blower Motor - Pushes air through the vent system - URO - Audi

Pushes air through the vent system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
From the 2013 model year

Brand:
URO - Corporate Logo
ES#:
4759366
Mfg#:
8T1820021
In Stock
$66.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Motylgear Manual Transmission / Differential Fluid (75w-90) - 1 Liter

ES#261389 - 317011 - Motylgear Manual Transmission / Differential Fluid (75w-90) - 1 Liter - Technosynthese Semi-synthetic high performance GL-4 / GL-5 gear oil specially recommended for hard to shift gearboxes - Motul - Audi BMW Volkswagen MINI Porsche

Technosynthese Semi-synthetic high performance GL-4 / GL-5 gear oil specially recommended for hard to shift gearboxes affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Motul - Corporate Logo
ES#:
261389
Mfg#:
317011
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.

$20.44

This product was last offered at the strikethrough price on
06-19-2026

$18.40 USD
Free Shipping
on orders $49 and up

Radiator Hose - Upper

ES#3796 - 8D0121101AG - Radiator Hose - Upper - Reservoir to adapter to radiator. - Genuine Volkswagen Audi - Audi

Reservoir to adapter to radiator. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3796
Mfg#:
8D0121101AG
Ships in 1-2 days
8% off MSRP

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

$401.99

This product was last offered at the strikethrough price on
06-19-2026

$367.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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