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Audi B8/B8.5 S4 Quattro 3.0T Performance Exterior Parts & Upgrades

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Audi B8.5 S4 / A4 S-Line Rear Diffuser - Gloss Black

ES#4147363 - 028807ecs01KT - Audi B8.5 S4 / A4 S-Line Rear Diffuser - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits facelift B8.5 (2013+) models only

Brand:
ECS - Corporate Logo
ES#:
4147363
Mfg#:
028807ECS01KT
In Stock
ON SALE! SAVE 25%
$399.99

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

$299.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Gloss Black

ES#4164657 - 028806ecs01KT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
4164657
Mfg#:
028806ECS01KT
In Stock
ON SALE! SAVE 35%
$381.09

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

$249.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black

ES#4033487 - 028808ECS01 - Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits pre-facelift B8 models only

Brand:
ECS - Corporate Logo
ES#:
4033487
Mfg#:
028808ECS01
In Stock
ON SALE! SAVE 20%
$411.99

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

$329.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Street Shield Aluminum Skid Plate Kit

ES#2771912 - 003251ECS01AKT2 - ECS Tuning Street Shield Aluminum Skid Plate Kit - Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8 chassis A4/S4/A5/S5 models from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
2771912
Mfg#:
003251ECS01AKT2
In Stock
ON SALE!
$407.99

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

$387.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 A4/S4 Flat Side Skirts - Gloss Black

ES#4045736 - 024716ecs02KT - Audi B8/B8.5 A4/S4 Flat Side Skirts - Gloss Black - Enhance your side profile with an aggressive look! - ECS - Audi

Enhance your side profile with an aggressive look! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4045736
Mfg#:
024716ECS02KT
In Stock
ON SALE! SAVE 27%
$339.89

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

$249.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 S4 Trunk Spoiler - Gloss Black

ES#3619834 - 026861ECS01 - Audi B8/B8.5 S4 Trunk Spoiler - Gloss Black - Add some aggressive styling to your Audi! - ECS - Audi

Add some aggressive styling to your Audi! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3619834
Mfg#:
026861ECS01
In Stock
ON SALE! SAVE 57%
$321.99

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

$140.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Street Shield Aluminum Skid Plate Kit

ES#2771379 - 003251ECS01AKTKT - ECS Tuning Street Shield Aluminum Skid Plate Kit - Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8 chassis A4/S4/A5/S5 models up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
2771379
Mfg#:
003251ECS01AKTKT
In Stock
ON SALE! SAVE 10%
$407.99

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

$367.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 S4 / A4 S-Line Pre-Facelift Front Lip - Gloss Black

ES#4164865 - 028805ecs01KT - Audi B8 S4 / A4 S-Line Pre-Facelift Front Lip - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles up to the 2012 model year (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
4164865
Mfg#:
028805ECS01KT
In Stock
ON SALE! SAVE 30%
$308.99

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

$216.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black

ES#4158342 - 025864ecs01aKT - Audi B8.5 S4 / A4 S-Line Facelift Front Lip - Splitter Style - Gloss Black - Upgrade your exterior styling! - ECS - Audi

Upgrade your exterior styling! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
4158342
Mfg#:
025864ECS01AKT
In Stock
ON SALE! SAVE 35%
$352.25

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

$229.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Carbon Fiber Rear Diffuser

ES#3085916 - 018359ECS01A - Audi B8.5 S4 / A4 S-Line Carbon Fiber Rear Diffuser - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

From the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3085916
Mfg#:
018359ECS01A
In Stock
ON SALE! SAVE 15%
$999.99

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

$849.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Transmission Street Shield Skid Plate Kit - Audi B8

ES#3411961 - 017881ecs01KT - ECS Tuning Transmission Street Shield Skid Plate Kit - Audi B8 - Protect your vehicle's transmission pan with a 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's transmission pan with a 4mm thick aluminum skid plate affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3411961
Mfg#:
017881ECS01KT
In Stock
ON SALE! SAVE 20%
$495.44

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

$397.36 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Front Lip Spoiler - Audi B8.5 A4/S4

ES#3046047 - 013875ECS01A - Carbon Fiber Front Lip Spoiler - Audi B8.5 A4/S4 - Hand-laid carbon fiber to upgrade your exterior styling - ECS - Audi

Hand-laid carbon fiber to upgrade your exterior styling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles from the 2013 model year (Facelift)

Brand:
ECS - Corporate Logo
ES#:
3046047
Mfg#:
013875ECS01A
In Stock
ON SALE! SAVE 15%
$979.99

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

$832.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 A4/S4 Rear Window Spoiler - Gloss Black

ES#3713982 - 028446ECS01 - Audi B8/B8.5 A4/S4 Rear Window Spoiler - Gloss Black - Add subtle styling to complete the look! - ECS - Audi

Add subtle styling to complete the look! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3713982
Mfg#:
028446ECS01
In Stock
ON SALE! SAVE 19%
$197.99

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

$160.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 / A4 S-Line Gloss Black Grille Accent Set - Facelift

ES#3697648 - 027963ECS01 - Audi B8.5 S4 / A4 S-Line Gloss Black Grille Accent Set - Facelift - Upgrade your exterior styling - ECS - Audi

Upgrade your exterior styling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Facelift models from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3697648
Mfg#:
027963ECS01
In Stock
ON SALE! SAVE 26%
$267.99

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

$199.23 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8.5 S4 Facelift Rear Diffuser & Trunk Spoiler

ES#4751213 - 026861ECS01EBKT - Audi B8.5 S4 Facelift Rear Diffuser & Trunk Spoiler - Add some aggressive styling to your Audi! - Enthusiast Bundles - Audi

Add some aggressive styling to your Audi! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits facelift B8.5 (2013+) models only

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4751213
Mfg#:
026861ECS01EBKT
In Stock
ON SALE! SAVE 49%
$785.48

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

$399.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4/S4 Facelift Carbon Fiber Radiator Support Cover

ES#3435250 - 024714ECS01 - Audi B8 A4/S4 Facelift Carbon Fiber Radiator Support Cover - Carbon fiber, front and center! - ECS - Audi

Carbon fiber, front and center! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Fits Facelift models from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
3435250
Mfg#:
024714ECS01
Ships on Jul 22, 2026
Auto Notify
ON SALE! SAVE 15%
$410.99

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

$349.32 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Exterior Parts & Upgrades

Make your car stand out with our catalog of exterior upgrades like spoilers, diffusers, side skirts, and more.

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

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