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Your Vehicle 2018 Porsche 911 991 GT3 Coupe H6 4.0L

2018 Porsche 911 991 GT3 Coupe H6 4.0L Performance Engine Parts

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ES#3022274 - PSSLTT - Locking Tool For Stainless Steel Zip Ties - Secure stainless steel zip ties with ease! - Prosport Performance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Secure stainless steel zip ties with ease! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Prosport Performance - Corporate Logo
ES#:
3022274
Mfg#:
PSSLTT
Ships in 4 Business Days
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4212780 - SN0-806-BRD - 4AN "T" Fitting - 4AN T - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

4AN T affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4212780
Mfg#:
SN0-806-BRD
In Stock at Vendor
$10.99 USD
Free Shipping
on orders $49 and up
ES#261435 - 010202 - 14" Stainless Steel Locking Ties - Pack Of 4 - Secure the exhaust wrap with stainless steel ties - DEI - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Secure the exhaust wrap with stainless steel ties affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
DEI - Corporate Logo
ES#:
261435
Mfg#:
010202
Special Order: No Guaranteed ETA
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2826275 - 80003 - Green LED - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
2826275
Mfg#:
80003
In Stock at Vendor
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4487639 - ECU-40L-9912-GT3 - APR ECU Upgrade - 4.0L GT3 (991.2) - Max gains of +33-69 WHP and +37-52 WFT-LBS depending on octane - APR - Porsche

Max gains of +33-69 WHP and +37-52 WFT-LBS depending on octane Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.

Brand:
APR - Corporate Logo
ES#:
4487639
Mfg#:
ECU-40L-9912-GT3
In Stock
$2499.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#5425701 - SN0-20010 - Stage 2 Boost Cooler Forced Induction Progressive Engine Mount Water-Methanol Injection Kit - (NO LONGER AVAILABLE) *Scratch And Dent* - Red High Temp Nylon Tubing, Quick-Connect Fittings - Scratch & Dent - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Red High Temp Nylon Tubing, Quick-Connect Fittings ALL SALES FINAL. ITEMS MAY BE DAMAGED OR MISSING COMPONENTS. PLEASE SEE IMAGES BEFORE PURCHASING. Want To Haggle? Give Us A Call Or Chat To Make An Offer On This Product! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Scratch & Dent - Corporate Logo
ES#:
5425701
Mfg#:
SN0-20010
In Stock
ON SALE!
$520.99

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

$484.99 USD
Free Shipping
on orders $49 and up
ES#4680391 - 49C36434 - MACH Force-Xp 304 Stainless Steel Secondary Muffler Delete Pipe - Boost sound and performance with this center muffler delete, featuring dual tuned Helmholtz resonators, 304 stainless steel construction, and 100% TIG-welded strength in a direct bolt-on design. - AFE - Porsche

Boost sound and performance with this center muffler delete, featuring dual tuned Helmholtz resonators, 304 stainless steel construction, and 100% TIG-welded strength in a direct bolt-on design. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
4680391
Mfg#:
49C36434
In Stock at Vendor
20% off MSRP

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

$2105.00

This product was last offered at the strikethrough price on
05-28-2026

$1684.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4733194 - AWE991GT3CMD - AWE Center Muffler Delete - Porsche 997.2/991 GT3/RS - For those who want to increase tone, free up some power while dropping weight, but prefer to keep their factory side mufflers. - AWE - Porsche

For those who want to increase tone, free up some power while dropping weight, but prefer to keep their factory side mufflers. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AWE - Corporate Logo
ES#:
4733194
Mfg#:
AWE991GT3CMD
Ships on Jun 30, 2026
Starting at $1650.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4714702 - 1.25G-UMT-CL - 1.25 Gallon Heavy-Duty Universal Methanol Tank - Clear/White - Heavy-duty yet compact tank that is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk. - Burger Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Heavy-duty yet compact tank that is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Burger Motorsports - Corporate Logo
ES#:
4714702
Mfg#:
1.25G-UMT-CL
Ships on Jun 26, 2026
$69.00 USD
Free Shipping
on orders $49 and up
ES#4722146 - FS.POR.991CUP.SH - Fabspeed Porsche 991 GT3 Cup (2017 +) Sport Headers  - Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range. Fits all Porsche 991 GT3 Cup vehicles 2017+ - Fabspeed - Porsche

Direct replacement for the restrictive OEM headers, offering improved power and throttle response throughout the RPM range. Fits all Porsche 991 GT3 Cup vehicles 2017+ affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Fabspeed - Corporate Logo
ES#:
4722146
Mfg#:
FS.POR.991CUP.SH
Ships on Jul 2, 2026
$5719.99 USD
Free Shipping
ES#4858607 - SSXPO126 - Milltek Cat Back Exhaust System - GT-100 Polished Tips - Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Polished Titanium Finish. - Milltek Sport - Porsche

Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Polished Titanium Finish. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4858607
Mfg#:
SSXPO126
Ships in 3 Business Days
$1827.99 USD
ES#4858606 - SSXPO128 - Milltek Cat Back Exhaust System - GT-100 Brushed Titanium Tips - Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Brushed Titanium Finish. - Milltek Sport - Porsche

Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Brushed Titanium Finish. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4858606
Mfg#:
SSXPO128
Ships in 3 Business Days
$2182.99 USD
ES#4858608 - SSXPO127 - Milltek Cat Back Exhaust System - GT-100 Cerakote Black Tips - Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Cerakote Black Finish. - Milltek Sport - Porsche

Made from 100% 304L aircraft grade stainless steel! Includes Dual Tips in Cerakote Black Finish. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4858608
Mfg#:
SSXPO127
Ships in 3 Business Days
$1915.99 USD
Free Shipping
on orders $49 and up
ES#4858609 - SSXPO129 - Milltek Cat Back Exhaust System - Uses OE Tips - Made from 100% 304L aircraft grade stainless steel! Uses your factory tips. - Milltek Sport - Porsche

Made from 100% 304L aircraft grade stainless steel! Uses your factory tips. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
4858609
Mfg#:
SSXPO129
Ships in 3 Business Days
$1118.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#5457434 - UVM76MMTSTYLEX1 - Universal T-Style Valved Muffler Kit - Single Inlet / Dual Outlet - 3.0" (76mm) - 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#:
5457434
Mfg#:
UVM76MMTSTYLEX1
Ships in 1 Business Day
$499.99 USD
Free Shipping
ES#5457432 - UVM76MMDUALOUTx1 - Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 3.0" (76mm) - 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#:
5457432
Mfg#:
UVM76MMDUALOUTX1
Ships in 1 Business Day
$399.99 USD
Free Shipping

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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