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Audi D4 S8 Quattro 4.0T

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Audi D4 S8 Quattro 4.0T Performance Engine Parts

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Performance Valve Spring/Retainer Kit

ES#4699053 - IEVTWD1 - Performance Valve Spring/Retainer Kit - High quality performance valve springs and titanium retainers - Integrated Engineering - Audi

High quality performance valve springs and titanium retainers 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Integrated Engineering - Corporate Logo
ES#:
4699053
Mfg#:
IEVTWD1
Ships in 5 Business Days
$1154.99 USD
Free Shipping
on orders $49 and up

Cat-Back Exhaust System - Resonated - Valved

ES#2827581 - SSXAU466 - Cat-Back Exhaust System - Resonated - Valved - 2.76" stainless steel with quad 100mm Titanium tips - Milltek Sport - Audi

2.76" stainless steel with quad 100mm Titanium tips

Brand:
Milltek Sport - Corporate Logo
ES#:
2827581
Mfg#:
SSXAU466
Ships in 4 Business Days
$5577.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

RaceChip RS With App Control

ES#4339430 - 917792 - RaceChip RS With App Control - Get up to +68 hp and +66 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Audi

Get up to +68 hp and +66 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip For non-Plus models only.

Brand:
Race Chip - Corporate Logo
ES#:
4339430
Mfg#:
917792
Ships in 4 Business Days
$549.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip RS With App Control

ES#4338983 - 901842 - RaceChip RS With App Control - Get up to +87 hp and +83 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Audi

Get up to +87 hp and +83 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip For Plus models only.

Brand:
Race Chip - Corporate Logo
ES#:
4338983
Mfg#:
901842
Ships in 4 Business Days
$549.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip RS

ES#4339429 - 917791 - RaceChip RS - Get up to +68 hp and +66 through a safe and easy to use tuning module from RaceChip - Race Chip - Audi

Get up to +68 hp and +66 through a safe and easy to use tuning module from RaceChip For non-Plus models only.

Brand:
Race Chip - Corporate Logo
ES#:
4339429
Mfg#:
917791
Ships in 4 Business Days
$499.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black With App Control

ES#4339432 - 917796 - RaceChip GTS Black With App Control - Get up to +81 hp and +79 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip - Race Chip - Audi

Get up to +81 hp and +79 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip For non-Plus models only.

Brand:
Race Chip - Corporate Logo
ES#:
4339432
Mfg#:
917796
Ships in 4 Business Days
$849.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip GTS Black

ES#4339431 - 917795 - RaceChip GTS Black - Get up to +81 hp and +79 lb-ft through a safe and easy to use tuning module from RaceChip - Race Chip - Audi

Get up to +81 hp and +79 lb-ft through a safe and easy to use tuning module from RaceChip For non-Performance models only.

Brand:
Race Chip - Corporate Logo
ES#:
4339431
Mfg#:
917795
Ships in 4 Business Days
$799.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

RaceChip RS

ES#4338982 - 901841 - RaceChip RS - Get up to +87 hp and +83 through a safe and easy to use tuning module from RaceChip - Race Chip - Audi

Get up to +87 hp and +83 through a safe and easy to use tuning module from RaceChip For Plus models only.

Brand:
Race Chip - Corporate Logo
ES#:
4338982
Mfg#:
901841
Ships in 4 Business Days
$499.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Braided Kevlar Fuel Line Re-Route Kit

Upgrade your performance with a Kevlar Braided Fuel Line Kit, engineered for efficiency and longevity.

Brand:
JH Motorsports - Corporate Logo
ES#:
4759164
Mfg#:
JHM-D440TFLRRK
Ships on Aug 18, 2026
$349.99 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.

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