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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Exterior Body Parts

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Audi B9 S4 Rear Diffuser - Gloss Black

ES#4056580 - 006077LA01 - Audi B9 S4 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 models (up to 2019) without integrated tips in the rear valance

Brand:
ECS - Corporate Logo
ES#:
4056580
Mfg#:
006077LA01
In Stock
ON SALE! SAVE 20%
$420.99

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

$336.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 Front Lip Spoiler - Gloss Black

ES#4147652 - 028802ecs01KT - Audi B9 A4/S4 Front Lip Spoiler - 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 2018 Models Only

Brand:
ECS - Corporate Logo
ES#:
4147652
Mfg#:
028802ECS01KT
In Stock
ON SALE! SAVE 25%
$378.99

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

$284.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate

ES#3411957 - 019207ecs01KT - Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate - Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's plastic oil pan 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!

Brand:
ECS - Corporate Logo
ES#:
3411957
Mfg#:
019207ECS01KT
In Stock
$391.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4/A4 Trunk Spoiler - Gloss Black

ES#3981207 - 028801ECS01 - Audi B9 S4/A4 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!

Requires removal of the factory trunk spoiler

Brand:
ECS - Corporate Logo
ES#:
3981207
Mfg#:
028801ECS01
In Stock
ON SALE! SAVE 25%
$289.99

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

$217.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 / S4 Flat Side Skirts - Gloss Black

ES#4163869 - 001734la01 - Audi B9 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#:
4163869
Mfg#:
001734LA01
In Stock
ON SALE! SAVE 20%
$363.99

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

$291.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Schwaben Pinch Weld Protector

ES#3107838 - 019164SCH01A - Schwaben Pinch Weld Protector - These protectors work between your floor jack and pinch weld. Protects pinch weld from bending when lifting car - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

These protectors work between your floor jack and pinch weld. Protects pinch weld from bending when lifting car affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
3107838
Mfg#:
019164SCH01A
In Stock
ON SALE! SAVE 20%
$16.99

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

$13.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Schwaben Set Of 4 Pinch Weld Protectors

ES#3129772 - 3107838KT - Schwaben Set Of 4 Pinch Weld Protectors - Use these between your floor jack and on pinch weld. Protects pinch weld from bending when lifting car - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Use these between your floor jack and on pinch weld. Protects pinch weld from bending when lifting car affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
3129772
Mfg#:
3107838KT
In Stock
ON SALE! SAVE 15%
$67.99

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

$57.57 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Schwaben Deluxe Fender Lip Roller

ES#3536478 - 024962SCH02A - Schwaben Deluxe Fender Lip Roller - Updated design with increased coverage, including 14mm Studs - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Updated design with increased coverage, including 14mm Studs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
3536478
Mfg#:
024962SCH02A
Back Ordered
Auto Notify
ON SALE! SAVE 20%
$110.99

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

$88.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AeroCatch 120 Series Hood Pins - Non-Locking

ES#3024300 - 120-2000 - AeroCatch 120 Series Hood Pins - Non-Locking - Hood pin kit with a modern twist - AeroCatch - Audi Volkswagen Mercedes Benz Porsche

Hood pin kit with a modern twist affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AeroCatch - Corporate Logo
ES#:
3024300
Mfg#:
120-2000
In Stock
$566.99

This product was last offered at the strikethrough price on
05-12-2026

$82.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 S4 Carbon Fiber Rear Diffuser

ES#3247439 - 023797ECS01 - Audi B9 S4 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!

Fits pre-facelift models (up to 2019) without integrated tips in the rear valance

Brand:
ECS - Corporate Logo
ES#:
3247439
Mfg#:
023797ECS01
In Stock
ON SALE! SAVE 34%
$1029.99

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

$679.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4 Transmission Street Shield Aluminum Skid Plate

ES#3979295 - 027567ecs01KT - Audi B9 A4/S4 Transmission Street Shield Aluminum Skid Plate - Protect your transmission pan and improve aerodynamics - ECS - Audi

Protect your transmission pan 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#:
3979295
Mfg#:
027567ECS01KT
In Stock
ON SALE! SAVE 15%
$354.99

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

$301.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B9.5 Mid-Facelift S4/A4 S-Line 3 Piece Front Lip - Gloss Black

ES#4338534 - 007041la01KT - B9.5 Mid-Facelift S4/A4 S-Line 3 Piece 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!

Only Fits 2019 Mid-Facelift Bumpers

Brand:
ECS - Corporate Logo
ES#:
4338534
Mfg#:
007041LA01KT
In Stock
ON SALE! SAVE 25%
$350.99

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

$263.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Functional Aerodynamic Rear Wing Kit - Universal Fitment

ES#4509042 - 013903LA - Functional Aerodynamic Rear Wing Kit - Universal Fitment - Maximize rear tire contact with our in-house engineered, adjustable Carbon Fiber Rear Wing - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Maximize rear tire contact with our in-house engineered, adjustable Carbon Fiber Rear Wing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4509042
Mfg#:
013903LA
In Stock
ON SALE!
Starting at $1652.78 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5

ES#3411932 - 024564ECS01 - Carbon Fiber Mirror Cap Set - Audi B9 A4/A5/S4/S5 - With Lane Change Assist - ECS - Audi

With Lane Change Assist affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3411932
Mfg#:
024564ECS01
In Stock
ON SALE! SAVE 20%
$413.99

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

$331.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Anti-Buffeting Wind Deflectors

ES#4852729 - 034-602-Z001 - Anti-Buffeting Wind Deflectors - Reduce the wind buffeting issues OEM vehicle manufacturers overlook - 034Motorsport - Audi BMW Volkswagen Porsche

Reduce the wind buffeting issues OEM vehicle manufacturers overlook affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4852729
Mfg#:
034-602-Z001
In Stock
ON SALE! SAVE 10%
$16.00

This product was last offered at the strikethrough price on
06-28-2026

$14.40 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

VWR Billet Fuel Filler Cap - Push & Twist Type

ES#4040601 - vwr19G711 - VWR Billet Fuel Filler Cap - Push & Twist Type - Beautifully over-engineered in customary RacingLine fashion to give an exquisite feel and beautiful appearance - Make refueling a pleasure! - Racingline - Audi Volkswagen Porsche

Beautifully over-engineered in customary RacingLine fashion to give an exquisite feel and beautiful appearance - Make refueling a pleasure! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with bayonet/twist lock style gas cap only. Please confirm prior to ordering.

Brand:
Racingline - Corporate Logo
ES#:
4040601
Mfg#:
VWR19G711
In Stock
ON SALE! SAVE 10%
$137.99

This product was last offered at the strikethrough price on
07-01-2026

$123.76 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Exterior Body Parts

From body panels to plate fillers, ECS Tuning carries a full selection of body parts, moldings, fasteners, exterior upgrades, and trim for your Euro-car. Whether you're restoring the stock look of your car or customizing, we put hundreds of OE and aftermarket body part options at your disposal.

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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