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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Most Popular Parts

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AEM Water/Methanol Injection System

ES#4500516 - 30-3326 - AEM Water/Methanol Injection System - High-Flow Low-Current WMI Solenoid - 200PSI 1/8in-27NPT In/Out - AEM Electronics - Audi BMW Volkswagen MINI Porsche

High-Flow Low-Current WMI Solenoid - 200PSI 1/8in-27NPT In/Out

Brand:
AEM Electronics - Corporate Logo
ES#:
4500516
Mfg#:
30-3326
In Stock at Vendor
11% off MSRP

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

$149.99

This product was last offered at the strikethrough price on
10-21-2026

$132.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

1/4", 3/8", & 1/2" Drive Shallow Socket Sets With 1/4", 3/8", & 1/2" Drive Deep Socket Sets

ES#4849864 - 003403SCH01A2KT - 1/4", 3/8", & 1/2" Drive Shallow Socket Sets With 1/4", 3/8", & 1/2" Drive Deep Socket Sets - This bundles includes 3 deep sockets sets (1/4", 3/8", and 1/2" drive) and 3 shallow sets sets (1/4", 3/8", and 1/2" drive) to complete your socket collection! - Enthusiast Bundles - Audi BMW Volkswagen Mercedes Benz MINI Porsche

This bundles includes 3 deep sockets sets (1/4", 3/8", and 1/2" drive) and 3 shallow sets sets (1/4", 3/8", and 1/2" drive) to complete your socket collection! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One!

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4849864
Mfg#:
003403SCH01A2KT
In Stock
ON SALE! SAVE 33%
$197.99

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

$132.91 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

75mm Bullet Nose Stud Kit - Set Of 5

ES#4505748 - 034-604-3004-5 - 75mm Bullet Nose Stud Kit - Set Of 5 - Made from high tensile heat treated Grade 10.9 Chromoly Steel and coated in Black Zinc. M14x1.5 - 034Motorsport - Audi Volkswagen

Made from high tensile heat treated Grade 10.9 Chromoly Steel and coated in Black Zinc. M14x1.5 2X Entries Into Our F80 M3 Sweepstakes
For use with spacers up to 20mm only

Brand:
034Motorsport - Corporate Logo
ES#:
4505748
Mfg#:
034-604-3004-5
In Stock
$30.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Silicone Coupler - Straight 3" ID (76.20mm) x 3" L

ES#2680980 - 003402ECS01A-06 - Silicone Coupler - Straight 3" ID (76.20mm) x 3" L - A high-quality component for your next project - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

A high-quality component for your next project 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2680980
Mfg#:
003402ECS01A-06
In Stock
ON SALE! SAVE 25%
$30.99

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

$23.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMC Filter Cleaning Kit

ES#3088918 - WA250-500 - BMC Filter Cleaning Kit - Includes cleaner and re-oil additive - BMC - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Includes cleaner and re-oil additive

Brand:
BMC - Corporate Logo
ES#:
3088918
Mfg#:
WA250-500
In Stock
$24.99 USD
Free Shipping
on orders $49 and up

Carbon Fiber Audi Sport Keychain

ES#3642266 - ZAW087610A - Carbon Fiber Audi Sport Keychain - Upgrade your style with this Genuine Audi keychain - Genuine Volkswagen Audi - Audi

Upgrade your style with this Genuine Audi keychain

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3642266
Mfg#:
ZAW087610A
In Stock
2% off MSRP

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

$45.00

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

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M18 Triple Square Extended Reach Socket, 1/2" Drive

ES#1910127 - is-12m18 - M18 Triple Square Extended Reach Socket, 1/2" Drive - A must have tool for any Volkswagen, Audi or BMW owner - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

A must have tool for any Volkswagen, Audi or BMW owner 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Schwaben - Corporate Logo
ES#:
1910127
Mfg#:
IS-12M18
In Stock
ON SALE! SAVE 25%
$43.99

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

$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Relief Flush

ES#2608077 - 040202 - Radiator Relief Flush - Concentrated cleansing agent that effectively cleans your cooling system! - DEI - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Concentrated cleansing agent that effectively cleans your cooling system!

Brand:
DEI - Corporate Logo
ES#:
2608077
Mfg#:
040202
In Stock
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Titanium Conical Seat Wheel Bolt - 14x1.5x40mm - Set Of 20

ES#3570227 - 025384ecs03-0320 - Titanium Conical Seat Wheel Bolt - 14x1.5x40mm - Set Of 20 - Lightweight, corrosion resistant, high performance lug bolts - ECS - Audi BMW Volkswagen Mercedes Benz

Lightweight, corrosion resistant, high performance lug bolts 10X Entries Into Our F80 M3 Sweepstakes
Extended length bolts for use with 10mm to 12.5mm spacers

Brand:
ECS - Corporate Logo
ES#:
3570227
Mfg#:
025384ECS03-0320
Ships on Dec 14, 2026
ON SALE! SAVE 10%
$339.99

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

$305.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

12mm Exhaust Hanger Locking Collar

ES#4865886 - 053563LA01 - 12mm Exhaust Hanger Locking Collar - Achieve perfect exhaust fitment! - ECS - Audi BMW Volkswagen Mercedes Benz MINI

Achieve perfect exhaust fitment! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4865886
Mfg#:
053563LA01
In Stock
ON SALE! SAVE 10%
$16.99

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

$15.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3/8" Dr Click Torque Wrench

ES#4370646 - M202-P - 3/8" Dr Click Torque Wrench - Professional style. - Performance Tool - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Professional style.

Brand:
Performance Tool - Corporate Logo
ES#:
4370646
Mfg#:
M202-P
In Stock
$35.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt - Priced Each

ES#253232 - N90628303 - Hex Bolt - Priced Each - Install new hardware with your new parts. M10x95 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M10x95

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
253232
Mfg#:
N90628303
In Stock
3% off MSRP

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

$15.52

This product was last offered at the strikethrough price on
10-21-2026

$15.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

200 Credits - OBDeleven

ES#4839937 - 024871OBD12 - 200 Credits - OBDeleven - 200 Credits for you to unlock One-Click apps and modify your car! - OBDeleven - Audi BMW Volkswagen MINI

200 Credits for you to unlock One-Click apps and modify your car! These arrive on a scratch-off card with a code for you to activate on your OBDeleven device easily.

Brand:
OBDeleven - Corporate Logo
ES#:
4839937
Mfg#:
024871OBD12
In Stock
$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Xtreme Yellow H3 Bulb (55W/12V) - Pair

ES#4043149 - H3 YL - Xtreme Yellow H3 Bulb (55W/12V) - Pair - 55W bulbs with 2900K yellow color output - Improve visibility under fog, hail and rainy days - Hella - Audi BMW Volkswagen Mercedes Benz MINI Porsche

55W bulbs with 2900K yellow color output - Improve visibility under fog, hail and rainy days

Brand:
Hella - Corporate Logo
ES#:
4043149
Mfg#:
H3 YL
Back Ordered
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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