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Audi S4 Performance Parts & Upgrades

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ES#2063654 - APRSECPRG-SRV - Security Lockout Service - *Sale only applies to purchases to ECU with 3 or 4 program options - APR - Audi Volkswagen

*Sale only applies to purchases to ECU with 3 or 4 program options Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
2063654
Mfg#:
APRSECPRG-SRV
In Stock
$59.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#2063651 - APRFCTB-SRV - Fault Code Erase And Throttle Body Alignment Service - *Sale only applies to purchases to ECU with 3 or 4 program options - APR - Audi Volkswagen

*Sale only applies to purchases to ECU with 3 or 4 program options Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
2063651
Mfg#:
APRFCTB-SRV
In Stock
$59.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#3137471 - 019396ECS03KT - B7 A4/S4/RS4 Master LED Interior Lighting Kit - Red - Transform your complete interior in minutes with new LED interior bulbs from Ziza - ZiZa - Audi

Transform your complete interior in minutes with new LED interior bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Sedan models only

Brand:
ZiZa - Corporate Logo
ES#:
3137471
Mfg#:
019396ECS03KT
Ships on Oct 7, 2026
ON SALE! SAVE 50%
$117.99

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

$59.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3137482 - 019396ECS05KT - Master LED Interior Lighting Kit - Red - Transform your complete interior in minutes with new LED interior bulbs from Ziza - ZiZa - Audi

Transform your complete interior in minutes with new LED interior bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
3137482
Mfg#:
019396ECS05KT
Ships on Oct 7, 2026
ON SALE! SAVE 50%
$117.99

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

$59.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3137475 - 019396ECS04BKT - Master LED Interior Lighting Kit - Red - Transform your complete interior in minutes with new LED interior bulbs from Ziza - ZiZa - Audi

Transform your complete interior in minutes with new LED interior bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Avant models only

Brand:
ZiZa - Corporate Logo
ES#:
3137475
Mfg#:
019396ECS04BKT
Ships on Oct 7, 2026
ON SALE! SAVE 50%
$117.99

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

$59.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3137474 - 019396ECS04AKT -  Master LED Interior Lighting Kit - Red - Transform your complete interior in minutes with new LED interior bulbs from Ziza - ZiZa - Audi

Transform your complete interior in minutes with new LED interior bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Sedan models only

Brand:
ZiZa - Corporate Logo
ES#:
3137474
Mfg#:
019396ECS04AKT
Ships on Oct 7, 2026
ON SALE! SAVE 50%
$117.99

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

$59.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3603476 -  034-402-Z019 - Rear Sway Bar Bushing Kit - Rebuild kit for the 034Motorsport adjustable rear sway bar - 034Motorsport - Audi

Rebuild kit for the 034Motorsport adjustable rear sway bar affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3603476
Mfg#:
034-402-Z019
Ships in 2 Business Days
$29.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2840457 - PE74HRED - Rennline Heel/Toe Throttle Extension - Red - Pedal extensions to customize your driving experience - Rennline - Audi

Pedal extensions to customize your driving experience affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rennline - Corporate Logo
ES#:
2840457
Mfg#:
PE74HRED
Ships in 5 Business Days
$58.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#451227 - 8K0807241AGRU - Front Tow Hook Cover - Primed - Replace your lost cover - Genuine Volkswagen Audi - Audi

Replace your lost cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
451227
Mfg#:
8K0807241AGRU
In Stock
8% off MSRP

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

$62.99

This product was last offered at the strikethrough price on
06-18-2026

$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2215382 - B5A4OVERHEAD - LED Overhead Lighting Kit - Transform your dome lamp lighting with these new LED bulbs from Ziza - ZiZa - Audi

Transform your dome lamp lighting with these new LED bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
2215382
Mfg#:
B5A4OVERHEAD
In Stock
ON SALE! SAVE 10%
$62.99

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

$56.69 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3138031 - 019396ECS05KT2 - LED Overhead Lighting Kit - Red - Transform your dome lamp lighting with these new LED bulbs from Ziza - ZiZa - Audi

Transform your dome lamp lighting with these new LED bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
3138031
Mfg#:
019396ECS05KT2
Ships on Oct 7, 2026
ON SALE! SAVE 10%
$62.99

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

$56.69 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

OEM Formulation - equal or better performance, without the OEM prices. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
R1 Concepts - Corporate Logo
ES#:
4166256
Mfg#:
2552-1894-00
Ships in 7 Business Days
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#437890 - 8E0807241CGRU - Tow Hook Cover - Comes in primer, ready for paint - Genuine Volkswagen Audi - Audi

Comes in primer, ready for paint affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
437890
Mfg#:
8E0807241CGRU
Ships in 1 day
9% off MSRP

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

$57.99

This product was last offered at the strikethrough price on
06-18-2026

$52.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3142421 - N01473911KT3 -  Lightweight Pulley Installation Hardware Kit - Includes brand new hardware to secure your new ECS Tuning Lightweight Pulley Set! - Assembled By ECS - Audi

Includes brand new hardware to secure your new ECS Tuning Lightweight Pulley Set! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with Bosch style alternators

Brand:
Assembled By ECS - Corporate Logo
ES#:
3142421
Mfg#:
N01473911KT3
Ships in 1 day
ON SALE!
$58.99

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

$56.66 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2855340 - 028903320CKT - Alternator Pulley Hardware Kit - A new washer and nut to install your pulley - Assembled By ECS - Audi Volkswagen

A new washer and nut to install your pulley affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For use with Bosch style alternators

Brand:
Assembled By ECS - Corporate Logo
ES#:
2855340
Mfg#:
028903320CKT
Ships in 1 day
ON SALE! SAVE 25%
$13.99

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

$10.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2650248 - PFR3-210-15X2 -  Performance Rear Sway Bar Bushing Set - Street - 15mm - Stiffer bushings allow sway bars to work at their fullest potential - Powerflex - Audi

Stiffer bushings allow sway bars to work at their fullest potential affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Powerflex - Corporate Logo
ES#:
2650248
Mfg#:
PFR3-210-15X2
Ships in 1 Business Day
$51.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Parts & Upgrades

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