Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply
affirm financing terms & conditions

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle Clear

Audi B9 S4 Quattro 3.0T

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
affirm financing terms & conditions
garage-red
Your Vehicle Audi B9 S4 Quattro 3.0T
Your Vehicle Audi B9 S4 Quattro 3.0T
Change Clear

Audi B9 S4 Quattro 3.0T Most Popular Parts

Sort By
Filter By
Return to Top

Ethanol Content Sensor With Harness

ES#4305678 - P3ESEN - Ethanol Content Sensor With Harness - Reads ethanol content and fuel temperature - P3 Gauges - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Reads ethanol content and fuel temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
P3 Gauges - Corporate Logo
ES#:
4305678
Mfg#:
P3ESEN
In Stock
$100.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS "Ti.22" UNIVERSAL Exhaust Tip - 4.0" Titanium - Burnt Finish - Priced Each

ES#4336426 - 011966LA07-06 - ECS "Ti.22" UNIVERSAL Exhaust Tip - 4.0" Titanium - Burnt Finish - Priced Each - 2.5" Clamp-on Inlet / 4.0" Single Wall, Slant Cut Outlet - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

2.5" Clamp-on Inlet / 4.0" Single Wall, Slant Cut Outlet affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!

Brand:
ECS - Corporate Logo
ES#:
4336426
Mfg#:
011966LA07-06
In Stock
ON SALE! SAVE 10%
$199.99

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

$179.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Conical Seat Wheel Bolt - 14x1.5x30mm - Priced Each

ES#2130050 - C17D30-ZNNITT - Conical Seat Wheel Bolt - 14x1.5x30mm - Priced Each - Black zinc coated wheel bolts made with aftermarket wheels in mind - ECS - Audi BMW Volkswagen Mercedes Benz

Black zinc coated wheel bolts made with aftermarket wheels in mind affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2130050
Mfg#:
C17D30-ZNNITT
In Stock
ON SALE! SAVE 25%
$5.99

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

$4.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3.0" Stainless Steel V-Band Assembly - Priced Each

ES#4007187 - 028092ecs09aKT - 3.0" Stainless Steel V-Band Assembly - Priced Each - Create a leak-proof connection for your custom exhaust project. Features locating ring for ease of alignment. - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Create a leak-proof connection for your custom exhaust project. Features locating ring for ease of alignment. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4007187
Mfg#:
028092ECS09AKT
In Stock
ON SALE! SAVE 25%
$54.99

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

$41.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Speed Tec Gasoline Fuel Additive - 250mL

ES#4265328 - 20234KT - Speed Tec Gasoline Fuel Additive - 250mL - Improve combustion and acceleration with this simple additive! - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Improve combustion and acceleration with this simple additive! 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! This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship

Brand:
Liqui-Moly - Corporate Logo
ES#:
4265328
Mfg#:
20234KT
In Stock
$11.99

This product was last offered at the strikethrough price on
02-26-2026

$10.99 USD
Free Shipping
on orders $49 and up

Black Synthetic "Dry" Air Filter Element (3.0")

ES#3697632 - 003675ECS02-02 - Black Synthetic "Dry" Air Filter Element (3.0") - High flow, reusable air filter. Used as a replacement filter to an ECS intake system or for your custom intake project. 5" Base OD / 7" Filter Height / 4.5" Top OD - ECS - Audi BMW Volkswagen

High flow, reusable air filter. Used as a replacement filter to an ECS intake system or for your custom intake project. 5" Base OD / 7" Filter Height / 4.5" Top OD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3697632
Mfg#:
003675ECS02-02
In Stock
ON SALE! SAVE 25%
$66.99

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

$50.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi Timing Tool Kit

ES#4491730 - LCB454SCH - Audi Timing Tool Kit - Everything you need in one convenient blow molded case! - Schwaben - Audi Volkswagen Porsche
ECS Tuning recommends this product.

Everything you need in one convenient blow molded case! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
4491730
Mfg#:
LCB454SCH
Ships on Aug 10, 2026
Auto Notify
ON SALE!
$168.99

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

$163.92 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 16" Electric Fan - Black

ES#2652188 - 30102049 - Universal 16" Electric Fan - Black - 2024 CFM. High performance puller fan with curved blades. - Spal - Audi BMW MINI

2024 CFM. High performance puller fan with curved blades. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spal - Corporate Logo
ES#:
2652188
Mfg#:
30102049
In Stock
$207.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Strut Nut Socket - 21mm

ES#2652181 - 003046SCH01A-03 - Strut Nut Socket - 21mm - Used to properly tighten strut nuts - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Used to properly tighten strut nuts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
2652181
Mfg#:
003046SCH01A-03
In Stock
ON SALE! SAVE 25%
$33.99

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

$25.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Catalytic Converter - 2.25"

ES#4005308 - 602205 - Universal Catalytic Converter - 2.25" - 2.25" inlet/outlet, 14" length of converter itself, 6" width & 4" height - Emico - Audi BMW Volkswagen Mercedes Benz MINI Porsche

2.25" inlet/outlet, 14" length of converter itself, 6" width & 4" height affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Emico - Corporate Logo
ES#:
4005308
Mfg#:
602205
In Stock
$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Black VR6 Design Short Sleeve T-Shirt

ES#4623397 - VR6BTS - Black VR6 Design Short Sleeve T-Shirt - Featuring white VR6 design and ECS Tuning logo on left chest and full back - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Featuring white VR6 design and ECS Tuning logo on left chest and full back affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4623397
Mfg#:
VR6BTS
In Stock
ON SALE!
Starting at $25.64 USD
Customize
Free Shipping
on orders $49 and up

Multi-Pump Fuel Surge Tank (MPFST)

ES#4820337 - 20-1440 - Multi-Pump Fuel Surge Tank (MPFST) - Pump Compatibility with Walbro GSS342, AEM 50-1200, Deatschwerks DW440 - Radium Engineering - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Pump Compatibility with Walbro GSS342, AEM 50-1200, Deatschwerks DW440 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Radium Engineering - Corporate Logo
ES#:
4820337
Mfg#:
20-1440
In Stock
$549.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic / Power Steering Fluid - 1 Liter

ES#2538440 - CHF202 - Hydraulic / Power Steering Fluid - 1 Liter - Long-life synthetic hydraulic fluid - Pentosin - Audi BMW Volkswagen Porsche

Long-life synthetic hydraulic fluid affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pentosin - Corporate Logo
ES#:
2538440
Mfg#:
CHF202
In Stock
$26.99 USD
Free Shipping
on orders $49 and up

Self-Locking Nut - Priced Each

ES#2876877 - N10106402 - Self-Locking Nut - Priced Each - Install new hardware with your new parts. M12x1.5 - Febi - Audi Volkswagen

Install new hardware with your new parts. M12x1.5 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:
Febi - Corporate Logo
ES#:
2876877
Mfg#:
N10106402
In Stock
$3.99

This product was last offered at the strikethrough price on
05-03-2026

$3.05 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Baffled Oil Catch Can - 6oz

ES#4369811 - 003779ECS05-01 - ECS Tuning Baffled Oil Catch Can - 6oz - Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! - ECS - Audi BMW Volkswagen MINI

Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For use with custom plumbing and ECS universal mounting bracket kit

Brand:
ECS - Corporate Logo
ES#:
4369811
Mfg#:
003779ECS05-01
In Stock
ON SALE! SAVE 46%
$233.99

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

$126.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wheel Storage Rack With Casters

ES#2660913 - 003639SCH01A - Wheel Storage Rack With Casters - Neatly organize, store, and move your extra wheels - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Neatly organize, store, and move your extra wheels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
2660913
Mfg#:
003639SCH01A
In Stock
ON SALE! SAVE 10%
$75.99

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

$68.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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