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Audi C5 S6 Quattro 4.2 Performance Engine Parts

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Water/Methanol Nozzle - 6GPH

ES#4361434 - SN0-N0600 - Water/Methanol Nozzle - 6GPH - Snow Performance Hyper-Sonic water-methanol injection nozzle - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Snow Performance Hyper-Sonic water-methanol injection nozzle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4361434
Mfg#:
SN0-N0600
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Unitronic Performance Software - Flashed @ ECS

ES#4465107 - 4.2-5V - Unitronic Performance Software - Flashed @ ECS - Choose the stage that meets your power goals! - Unitronic - Audi

Choose the stage that meets your power goals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This tune requires the vehicle to be dropped off at ECS Tuning's facility in Ohio and picked up the next

Brand:
Unitronic - Corporate Logo
ES#:
4465107
Mfg#:
4.2-5V
In Stock
Starting at $550.00 USD
Customize
This product is lifetime replacement eligible Lifetime Replacement

Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 1 Muffler

ES#5457423 - UVM63MMDUALOUTX1 - Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 1 Muffler - Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button - Valvetronic Designs - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Valvetronic Designs - Corporate Logo
ES#:
5457423
Mfg#:
UVM63MMDUALOUTX1
Ships in 1 Business Day
$399.99 USD
Free Shipping

HP Tuners PROLINK+ Cable

ES#4840618 - H021-002-06 - HP Tuners PROLINK+ Cable - Get access to even more vehicle data using PROLINK+ to wire in up to 2x analog signals and 1x CAN bus signal. Compatible with MPVI2+ and MPVI3 interfaces. - HP Tuners - Audi Volkswagen Mercedes Benz

Get access to even more vehicle data using PROLINK+ to wire in up to 2x analog signals and 1x CAN bus signal. Compatible with MPVI2+ and MPVI3 interfaces. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For use with HP Tuners MPVI2+ and MPVI3 interfaces only.

Brand:
HP Tuners - Corporate Logo
ES#:
4840618
Mfg#:
H021-002-06
Ships in 2 Business Days
$60.99

This product was last offered at the strikethrough price on
05-12-2026

$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Flow Water-Methanol Solenoid Upgrade - 4AN Fittings

Robust protection for your WMI installation to ensure peace of mind affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4715669
Mfg#:
40060-BRD
In Stock at Vendor
$73.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Snow Performance Methanol Injection Ring

Choose either V-band or hose camp style rings to add methanol injection easily to almost any vehicle. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4043246
Mfg#:
SN0-40111.40112
Ships in 2 Business Days
Starting at $0.00 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Nozzle Mounting adapter for hose

ES#2826223 - 40110 - Nozzle Mounting adapter for hose - 1/8" NPT Threads, Can Only Be Used With Snow Performance Straight Style Nozzle Holders - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

1/8" NPT Threads, Can Only Be Used With Snow Performance Straight Style Nozzle Holders affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
2826223
Mfg#:
40110
In Stock
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Snow Performance Stage 1 Boost Cooler/Water Injection Kit

Perfect choice for low to medium boost setups (1-15 PSI) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4906297
Mfg#:
SN0-201
In Stock
Limited Qty Sale
$375.00

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

$349.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forge Motorsport Valve Service Kit

ES#4781648 - FMDv004S - Forge Motorsport Valve Service Kit - Service kit for FMDv004 - Forge - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Service kit for FMDv004 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
4781648
Mfg#:
FMDV004S
In Stock
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Performance Engine Mount Kit - C5 A6/S6/Allroad

ES#4685821 - 000805ECS04AKT - ECS Performance Engine Mount Kit - C5 A6/S6/Allroad - Performance engine mounts to increase drivetrain rigidity - ECS - Audi

Performance engine mounts to increase drivetrain rigidity affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4685821
Mfg#:
000805ECS04AKT
In Stock
ON SALE!
$350.99

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

$333.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Engine Air Filter

ES#3195184 - FB102/01 - Performance Engine Air Filter - High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime - BMC - Audi BMW

High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
BMC - Corporate Logo
ES#:
3195184
Mfg#:
FB102/01
In Stock at Vendor
$80.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water/Methanol Nozzle - 1.5GPH

ES#4476206 - SN0-N0150 - Water/Methanol Nozzle - 1.5GPH - Snow Performance Hyper-Sonic water-methanol injection nozzle - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Snow Performance Hyper-Sonic water-methanol injection nozzle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4476206
Mfg#:
SN0-N0150
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Flow Water Methanol Check Valve (Nylon Line)

ES#3469706 - sn0-8cv - High Flow Water Methanol Check Valve (Nylon Line) - Custom made with 100% methanol resistant stainless steel spring and EPDM seals ensuring zero corrosion even with high concentrations of methanol. - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Custom made with 100% methanol resistant stainless steel spring and EPDM seals ensuring zero corrosion even with high concentrations of methanol. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
3469706
Mfg#:
SN0-8CV
Ships in 6 Business Days
$31.99 USD
Free Shipping
on orders $49 and up

High Flow Fuel Pump - 270 LPH

ES#2730417 - 0580254044 - High Flow Fuel Pump - 270 LPH - Great for when more fuel is needed in a custom fueling application - URO - Audi Volkswagen Porsche

Great for when more fuel is needed in a custom fueling application 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#:
2730417
Mfg#:
0580254044
In Stock at Vendor
$155.99

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

$150.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Snow Performance Water Methanol Injection Nozzle - 7GPH

ES#4685488 - SN0-N0700 - Snow Performance Water Methanol Injection Nozzle - 7GPH - Snow Performance Hyper-Sonic water-methanol injection nozzle - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Snow Performance Hyper-Sonic water-methanol injection nozzle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4685488
Mfg#:
SN0-N0700
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up

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.

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