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Audi B5 Performance Engine Parts

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RS4 K04 Turbochargers

ES#4164822 - 5304988002526KT3 - RS4 K04 Turbochargers - Includes the left (K04-025) & right (K04-026) side turbochargers - BorgWarner - Audi

Includes the left (K04-025) & right (K04-026) side turbochargers Does NOT include hardware or the RS4/modified intake pipes necessary for a complete install - For a bolt-on solution, please see 034Motorsport's inlet pipe kit 034-145-P002 (ES2864575).

Brand:
BorgWarner - Corporate Logo
ES#:
4164822
Mfg#:
5304988002526KT3
Ships in 1 Business Day
$3070.99

This product was last offered at the strikethrough price on
07-02-2026

$3067.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SXV T9302 Recirculating Bypass Valve

ES#4907811 - T9302 - SXV T9302 Recirculating Bypass Valve - Direct-fit performance solution for the weak factory diverter valve - Go Fast Bits - Audi Volkswagen Porsche

Direct-fit performance solution for the weak factory diverter valve

Brand:
Go Fast Bits - Corporate Logo
ES#:
4907811
Mfg#:
T9302
In Stock
$178.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Borg Warner EFR 7670 Turbocharger

ES#3450898 - 179351 - Borg Warner EFR 7670 Turbocharger - 0.83 A/R T3 Single Scroll (Internal Wastegate) - 375hp-650hp capabilities - BorgWarner - Audi Volkswagen

0.83 A/R T3 Single Scroll (Internal Wastegate) - 375hp-650hp capabilities *To be used with custom turbocharger applications only - IE T3 flange manifold, custom fueling, tuning/software, and internals necessary*

Brand:
BorgWarner - Corporate Logo
ES#:
3450898
Mfg#:
179351
Back Ordered
19% off MSRP

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

$3664.99

This product was last offered at the strikethrough price on
07-21-2026

$2967.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Bolt Set

ES#2550745 - 06A103385A - Cylinder Head Bolt Set - A full set to secure your cylinder head. M10x1.5x115 - Elring - Audi Volkswagen

A full set to secure your cylinder head. M10x1.5x115 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2550745
Mfg#:
06A103385A
In Stock
$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Garrett GTX3584RS Turbocharger

ES#3691644 - 856804-5003S - Garrett GTX3584RS Turbocharger - Garrett GTX3584RS Turbocharger; V-Band Inlet and V-Band Outlet Turbine Housing; 1.21 A/R. Garrett # 856804-5003S - Garrett - Audi Volkswagen MINI

Garrett GTX3584RS Turbocharger; V-Band Inlet and V-Band Outlet Turbine Housing; 1.21 A/R. Garrett # 856804-5003S Used for custom, big turbo applications only - ECS Tuning does not offer support on tuning, fueling, exhaust manifold, etc

Brand:
Garrett - Corporate Logo
ES#:
3691644
Mfg#:
856804-5003S
Ships in 6 Business Days
$2881.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Universal Oil Cooler - 10 Row

ES#2764288 - MM0CU - Universal Oil Cooler - 10 Row - Upgrading cooling for your engine oil - Mishimoto - Audi BMW Volkswagen MINI

Upgrading cooling for your engine oil For custom applications only. Not a direct bolt on.

Brand:
Mishimoto - Corporate Logo
ES#:
2764288
Mfg#:
MM0CU
In Stock at Vendor
$410.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cypher Handheld Programmer Tuner

ES#4707682 - 05-000-00073-5 - Cypher Handheld Programmer Tuner - This Device Flashes the Tune onto your vehicle thru the OBD2 Port. Includes handheld tuner, OBD2 Cable, and USB cable. Comes in a zipper carrying case. *Tune sold separately. - Weistec - Audi Volkswagen Mercedes Benz

This Device Flashes the Tune onto your vehicle thru the OBD2 Port. Includes handheld tuner, OBD2 Cable, and USB cable. Comes in a zipper carrying case. *Tune sold separately. This software is only compatible with Windows PC / Laptop. *Tune sold separately.

Brand:
Weistec - Corporate Logo
ES#:
4707682
Mfg#:
05-000-00073-5
Ships in 1 Business Day
$400.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Splitter Valve - Black

ES#8288 - FMDVSPLTR - Splitter Valve - Black - Recirculation & blow off valve all in one for customers that want both styles - Forge - Audi Volkswagen

Recirculation & blow off valve all in one for customers that want both styles

Brand:
Forge - Corporate Logo
ES#:
8288
Mfg#:
FMDVSPLTR
Ships in 3 Business Days
$310.99

This product was last offered at the strikethrough price on
06-18-2026

$310.13 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ARP Head Stud Kit

ES#2975695 - 204-4105 - ARP Head Stud Kit - High-strength cylinder head stud set - ARP - Audi

High-strength cylinder head stud set 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ARP - Corporate Logo
ES#:
2975695
Mfg#:
204-4105
In Stock at Vendor
$463.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Snow Performance Braided SS Line Trunk Mount Upgrade (4AN SS Braided Line Systems)

ES#4691038 - SN0-40012-BRD - Snow Performance Braided SS Line Trunk Mount Upgrade (4AN SS Braided Line Systems) - All the necessities to move your tank to the trunk of any vehicle. - SnowPerformance - Audi BMW Volkswagen MINI

All the necessities to move your tank to the trunk of any vehicle.

Brand:
SnowPerformance - Corporate Logo
ES#:
4691038
Mfg#:
SN0-40012-BRD
In Stock
Limited Qty Sale
$156.99

This product was last offered at the strikethrough price on
06-11-2026

$145.99 USD
Free Shipping
on orders $49 and up

Forged Head Studs for 1.8T 20V 137MM - Set Of 10

ES#4766620 - EXPRIS27 - Forged Head Studs for 1.8T 20V 137MM - Set Of 10 - Upgrade the head studs for your 20v 1.8t for higher boost builds! - SPA Performance - Audi Volkswagen

Upgrade the head studs for your 20v 1.8t for higher boost builds!

Brand:
SPA Performance - Corporate Logo
ES#:
4766620
Mfg#:
EXPRIS27
In Stock
$125.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

JE Forged Piston Set

ES#3569778 - 314324 - JE Forged Piston Set - 81.5mm bore (oversized), 9.0:1 compression ratio, 86.4mm stroke- includes rings, wrist-pins, & circlips - JE Piston - Audi

81.5mm bore (oversized), 9.0:1 compression ratio, 86.4mm stroke- includes rings, wrist-pins, & circlips +.5mm bore size: Overbore pistons require additional machine work including a cylinder bore and hone, this work must be performed by a machine shop

Brand:
JE Piston - Corporate Logo
ES#:
3569778
Mfg#:
314324
Back Ordered
$1349.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

TTE380+ Turbo Upgrade - B5 S4 & C5 A6 2.7T

ES#4630656 - TTE10041 - TTE380+ Turbo Upgrade - B5 S4 & C5 A6 2.7T - Designed to put out over 400HP! - The Turbo Engineers - Audi

Designed to put out over 400HP! Custom tuning software required for installation.

Brand:
The Turbo Engineers - Corporate Logo
ES#:
4630656
Mfg#:
TTE10041
Back Ordered
$2699.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine Parts

Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.

Let us help you find the parts that fit your Audi

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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