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Audi B8/B8.5 S4 Quattro 3.0T

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Audi B8/B8.5 S4 Quattro 3.0T Engine Parts & Accessories

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Lower Radiator Hose

ES#4899608 - 8K0121055B - Lower Radiator Hose - Direct replacement for your worn or cracked hose - Rein - Audi

Direct replacement for your worn or cracked hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4899608
Mfg#:
8K0121055B
In Stock
$71.99 USD
Free Shipping
on orders $49 and up

Fuel Line Relocation Kit

ES#3102573 - 000931ECS08 - Fuel Line Relocation Kit - Re-routes the fuel line underneath the intake tube for a cleaner look! - ECS - Audi

Re-routes the fuel line underneath the intake tube for a cleaner look! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Up to the 2012 model year

Brand:
ECS - Corporate Logo
ES#:
3102573
Mfg#:
000931ECS08
In Stock
$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 S4/S5 Left Side Engine Bay Cover - Matte Black

ES#4335425 - 006929la01KT - Audi B8/B8.5 S4/S5 Left Side Engine Bay Cover - Matte Black - Cover up unsightly under hood components with style! - ECS - Audi

Cover up unsightly under hood components with style! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4335425
Mfg#:
006929LA01KT
Ships on Aug 31, 2026
Auto Notify
$127.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Injector Repair Kit

ES#5434470 - 06E998907EKT3 - Fuel Injector Repair Kit - A simple kit to service the injectors - Assembled By ECS - Audi

A simple kit to service the injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
5434470
Mfg#:
06E998907EKT3
In Stock
ON SALE!
$270.36 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Kit W/ Tensioner

ES#3690231 - 06e903133aektKT - Accessory Belt Kit W/ Tensioner - Keep your accessories running properly with a new tensioner and drive belt - Assembled By ECS - Audi

Keep your accessories running properly with a new tensioner and drive belt affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
From the 2013 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
3690231
Mfg#:
06E903133AEKTKT
Back Ordered
Auto Notify
ON SALE!
$145.99

This product was last offered at the strikethrough price on
03-17-2026

$134.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Luft-Technik Intake Air Scoop - Audi B8 A4/A5/S4/S5

ES#3220796 - 017429ECS01 - Luft-Technik Intake Air Scoop - Audi B8 A4/A5/S4/S5 - Extends farther down behind the grille to direct more air to the intake system - ECS - Audi

Extends farther down behind the grille to direct more air to the intake system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3220796
Mfg#:
017429ECS01
In Stock
ON SALE! SAVE 23%
$216.99

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

$166.94 USD
Free Shipping

Secondary Air Injection Hose - Outlet

ES#2539548 - 06E133817AB - Secondary Air Injection Hose - Outlet - Connects the secondary air pump to the EGR connecting pipe - Genuine Volkswagen Audi - Audi

Connects the secondary air pump to the EGR connecting pipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2539548
Mfg#:
06E133817AB
Ships in 1-2 days
15% off MSRP

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

$111.67

This product was last offered at the strikethrough price on
06-12-2026

$95.14 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

supercharger bypass valve

ES#2644206 - 057128063G - supercharger bypass valve - Releases air pressure when off throttle - Genuine Volkswagen Audi - Audi

Releases air pressure when off throttle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2644206
Mfg#:
057128063G
Back Ordered
7% off MSRP

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

$712.99

This product was last offered at the strikethrough price on
06-12-2026

$664.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

A/C Pressure Switch

ES#4057415 - 4H0959126B - A/C Pressure Switch - Prevents excess pressure from building within the system - Original Equipment - Audi

Prevents excess pressure from building within the system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Original Equipment - Corporate Logo
ES#:
4057415
Mfg#:
4H0959126B
In Stock
$35.99

This product was last offered at the strikethrough price on
05-07-2026

$34.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#3580590 - 8K0121405N - Coolant Expansion Tank - Includes the heat shield - URO - Audi

Includes the heat shield affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3580590
Mfg#:
8K0121405N
In Stock
$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Sending Unit - Rear

ES#2541338 - 8K0919671B - Fuel Tank Sending Unit - Rear - Fuel level gauge for the fuel tank - Genuine Volkswagen Audi - Audi

Fuel level gauge for the fuel tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From the 2013 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2541338
Mfg#:
8K0919671B
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.

$286.99

This product was last offered at the strikethrough price on
06-12-2026

$262.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hexagon Socket Head Bolt - Priced Each

ES#467456 - N10124306 - Hexagon Socket Head Bolt - Priced Each - M6x20 bolt used in various areas on your European vehicle - Genuine Volkswagen Audi - Audi Volkswagen

M6x20 bolt used in various areas on your European vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the bypass valve pipe to the supercharger

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467456
Mfg#:
N10124306
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Pulley

ES#2631731 - 06E105251F - Crankshaft Pulley - Reduces vibrations and drives the accessory belt - Genuine Volkswagen Audi - Audi

Reduces vibrations and drives the accessory belt affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2631731
Mfg#:
06E105251F
Ships in 1-2 days
7% off MSRP

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

$693.99

This product was last offered at the strikethrough price on
06-01-2026

$646.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Supercharger Heat Exchanger Upgrade Kit

ES#3639608 - 034-102-1000 - 034Motorsport Supercharger Heat Exchanger Upgrade Kit - Significantly reduces intake air temperatures - Core size increased From 148 sq. in. to 341 sq. in, and frontal area increased by 130% over stock cooler! - 034Motorsport - Audi

Significantly reduces intake air temperatures - Core size increased From 148 sq. in. to 341 sq. in, and frontal area increased by 130% over stock cooler! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
*Please Note: Vehicles equipped with a factory dynamic steering cooler must relocate - Please see description for more info*

Brand:
034Motorsport - Corporate Logo
ES#:
3639608
Mfg#:
034-102-1000
Ships in 2 Business Days
$1288.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

N205 Valve - Priced Each

ES#4842657 - 06E109257AC - N205 Valve - Priced Each - Valve that controls cam adjustment (Camshaft solenoid adjuster) - Continental - Audi Volkswagen

Valve that controls cam adjustment (Camshaft solenoid adjuster) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Continental - Corporate Logo
ES#:
4842657
Mfg#:
06E109257AC
Back Ordered
$94.99

This product was last offered at the strikethrough price on
05-07-2026

$91.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supercharger Belt Idler Pulley

ES#3214735 - 06E903341H - Supercharger Belt Idler Pulley - Tracks the supercharger belt properly - Ina - Audi

Tracks the supercharger belt properly affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3214735
Mfg#:
06E903341H
Ships in 1 Business Day
$81.99

This product was last offered at the strikethrough price on
05-07-2026

$79.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

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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