Call Us330-331-2003 ChatLive Chat Text Us!
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle

Audi S4 Most Popular Parts

Sort By
Filter By
Return to Top
ES#3988147 - 034-108-1024 - X34 Carbon Fiber Intake Air Duct  - The perfect companion to the 034Motorsport X34 Carbon Fiber Cold Air Intake System - 034Motorsport - Audi

The perfect companion to the 034Motorsport X34 Carbon Fiber Cold Air Intake System affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*To be used with 034Motorsport X34 Intake System or most aftermarket intakes that utilize the OEM air duct*

Brand:
034Motorsport - Corporate Logo
ES#:
3988147
Mfg#:
034-108-1024
Ships in 2 Business Days
$377.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2621910 - GD1846 - Rear GD Sport Rotors - Pair (330x22) - Upgrade to a slotted/dimpled rotor for improved braking - EBC - Audi

Upgrade to a slotted/dimpled rotor for improved braking affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
EBC - Corporate Logo
ES#:
2621910
Mfg#:
GD1846
In Stock at Vendor
5% off MSRP

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

$396.99

This product was last offered at the strikethrough price on
06-26-2026

$376.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4004617 - 8K0121101J - Upper Radiator Hose - Connects the upper radiator port to the hard water tube - Rein - Audi

Connects the upper radiator port to the hard water tube 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:
Rein - Corporate Logo
ES#:
4004617
Mfg#:
8K0121101J
In Stock
$86.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4830571 - 06E903341G - Accessory Belt Idler Pulley - Also referred to as the 'relay roller' - Bremmen Parts - Audi

Also referred to as the 'relay roller' affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4830571
Mfg#:
06E903341G
Ships in 7 Business Days
ON SALE! SAVE 22%
$22.99

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

$17.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#472621 - WHT001949 - Torx Bolt - Priced Each - Install new hardware with your new parts. M12x1.5x92 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M12x1.5x92 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the straight lower control arm to the subframe

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472621
Mfg#:
WHT001949
In Stock
24% off MSRP

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

$19.47

This product was last offered at the strikethrough price on
06-26-2026

$14.87 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3419153 - 906526ktKT - Front Brembo GT Re-Ring Kit - Slotted Rotors (332x32mm) - Replacement rotor rings and hardware for 332x32mm slotted GT brake kits - Brembo - Audi

Replacement rotor rings and hardware for 332x32mm slotted GT brake kits affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Brembo - Corporate Logo
ES#:
3419153
Mfg#:
906526KTKT
Ships in 3 Business Days
$1130.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2536224 - 0B5321391A - S-Tronic Gearbox Harness - Wiring harness for S-Tronic Dual Clutch transmission - Plugs directly into sensor module - Genuine Volkswagen Audi - Audi

Wiring harness for S-Tronic Dual Clutch transmission - Plugs directly into sensor module affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2536224
Mfg#:
0B5321391A
Ships in 1-2 days
7% off MSRP

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

$605.99

This product was last offered at the strikethrough price on
06-26-2026

$564.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2593893 - 50314KT - Cup Kit - H&R Springs With Koni Shocks & Struts - Unrivaled comfort and performance. Average lowering of 1.2"F 1.0"R - Assembled By ECS - Audi

Unrivaled comfort and performance. Average lowering of 1.2"F 1.0"R 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#:
2593893
Mfg#:
50314KT
In Stock at Vendor
$1130.99

This product was last offered at the strikethrough price on
02-10-2026

$1128.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#3677483 - 027238ecs02KT - Audi B9 A4/S4 LED Trunk Lighting Kit - Add a second LED housing to the trunk of your Audi and eliminate the dark void on the passenger side! - ECS - Audi

Add a second LED housing to the trunk of your Audi and eliminate the dark void on the passenger side! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3677483
Mfg#:
027238ECS02KT
In Stock
ON SALE! SAVE 20%
$82.99

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

$66.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#5374284 - 034-301-2015-RED - 2-Piece Floating Rear Brake Rotor Upgrade - Red Carriers (370x22) - Reduces rotational weight by 1.6lbs on each corner and increases rotor diameter from 330mm to 370mm! - 034Motorsport - Audi

Reduces rotational weight by 1.6lbs on each corner and increases rotor diameter from 330mm to 370mm! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
5374284
Mfg#:
034-301-2015-RED
Ships in 2 Business Days
$1128.00 USD
Free Shipping
ES#4758913 - UH044-INA - Carbon Fiber Turbo Inlet - Upgrade your Audi S4 or S5 with the Carbon Fiber Turbo Inlet for unparalleled performance and airflow efficiency. - Unitronic - Audi

Upgrade your Audi S4 or S5 with the Carbon Fiber Turbo Inlet for unparalleled performance and airflow efficiency. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Buy Unitronic Software 6/22/26 - 7/10/26 for a chance to win your Software & UniCONNECT+ Cable for FREE!
Tune is recommend for the best performance

Brand:
Unitronic - Corporate Logo
ES#:
4758913
Mfg#:
UH044-INA
Ships on Jul 15, 2026
$375.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1894630 - 06E145723A - Compressor Intercooler Gasket - Priced Each - Seals the intercooler ends to the rear of the supercharger compressor - Genuine Volkswagen Audi - Audi

Seals the intercooler ends to the rear of the supercharger compressor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1894630
Mfg#:
06E145723A
Ships in 1-2 days
6% off MSRP

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

$50.00

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

$46.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#468845 - N10700201 - Torx Bolt - Priced Each - Bolt used in various areas on your European vehicle. M6x22 - Genuine Volkswagen Audi - Audi Volkswagen

Bolt used in various areas on your European vehicle. M6x22 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 01/24/2022

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
468845
Mfg#:
N10700201
In Stock
42% off MSRP

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

$5.14

This product was last offered at the strikethrough price on
06-26-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3108026 - 3B0498203F - Front Outer CV Joint Boot Kit - Priced Each - Stop losing CV grease and extend axle joint life - GKN Drivetech - Audi Volkswagen

Stop losing CV grease and extend axle joint life affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
GKN Drivetech - Corporate Logo
ES#:
3108026
Mfg#:
3B0498203F
In Stock
$23.99

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

$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3676696 - 4B0819439C - Charcoal Lined Cabin Filter / Fresh Air Filter - The activated charcoal filters odor from reaching the cabin - Hengst - Audi
ECS Tuning recommends this product.

The activated charcoal filters odor from reaching the cabin affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! Hengst is our preferred OEM filtration supplier!

Brand:
Hengst - Corporate Logo
ES#:
3676696
Mfg#:
4B0819439C
In Stock
ON SALE! SAVE 10%
$24.99

This product was last offered at the strikethrough price on
06-26-2026

$22.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2571659 - 8K1863822S - front Belly Pan - Rear Section - Reduces noise and protects your undercarriage - Genuine Volkswagen Audi - Audi

Reduces noise and protects your undercarriage affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2571659
Mfg#:
8K1863822S
Ships in 2 Business Days
9% off MSRP

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

$408.99

This product was last offered at the strikethrough price on
06-26-2026

$373.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Let us help you find the parts that fit your Audi

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings