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Your Vehicle 2015 Porsche 911 991 GT3 Coupe H6 3.8L

2015 Porsche 911 991 GT3 Coupe H6 3.8L Performance Engine Parts

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ES#5457426 - UVM63MMTSTYLEX1 - Universal T-Style 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#:
5457426
Mfg#:
UVM63MMTSTYLEX1
Ships in 1 Business Day
$499.99 USD
Free Shipping
ES#5457437 - UVM.89MM.X1 - Universal Valved Muffler Kit - Single Inlet / Single Outlet - 3.5" (89mm) - 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#:
5457437
Mfg#:
UVM.89MM.X1
Ships in 1 Business Day
$399.99 USD
Free Shipping
ES#5457433 - UVM76MMDUALOUTx2 - Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 3.0" (76mm) - 2 Mufflers - 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#:
5457433
Mfg#:
UVM76MMDUALOUTX2
Ships in 1 Business Day
$599.99 USD
Free Shipping
ES#5457424 - UVM63MMDUALOUTX2 - Universal Valved Muffler Kit - Single Inlet / Dual Outlet - 2.5" (63mm) - 2 Mufflers - 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#:
5457424
Mfg#:
UVM63MMDUALOUTX2
Ships in 1 Business Day
$599.99 USD
Free Shipping
ES#4732871 - 05-040-00238-2KT - Weistec Porsche 911 2015-2017 GT3 4.0L W.2 ECU Tune - Increase of +35 Horsepower, and +26 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance high-flow exhausts! - Weistec - Porsche

Increase of +35 Horsepower, and +26 Torque! Eliminate top speed limiter, Increased throttle response. W.2 Tunes are designed for vehicles with performance high-flow exhausts! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Weistec - Corporate Logo
ES#:
4732871
Mfg#:
05-040-00238-2KT
In Stock at Vendor
$2099.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4732870 - 05-040-00237-1KT - Weistec Porsche 911 2015-2017 GT3 4.0L W.1 ECU Tune - Increase of +16 Horsepower, and +11 Torque, Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications! - Weistec - Porsche

Increase of +16 Horsepower, and +11 Torque, Eliminate top speed limiter, Increased throttle response. W.1 Tunes are designed for completely stock vehicles with no other modifications! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Weistec - Corporate Logo
ES#:
4732870
Mfg#:
05-040-00237-1KT
In Stock at Vendor
$1999.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engages water-methanol system at 35PSI Adjustable from 25-50psi affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
2826280
Mfg#:
81081
In Stock at Vendor
$74.99 USD
Free Shipping
on orders $49 and up
ES#4686062 - UVM.63MM.x1 - Universal Valved Muffler Kit - Single Inlet / Single 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#:
4686062
Mfg#:
UVM.63MM.X1
Ships in 5 Business Days
$399.99 USD
Free Shipping
on orders $49 and up

Flow-bench optimized to provide maximum performance with your factory intake system! 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!

Brand:
APR - Corporate Logo
ES#:
4690597
Mfg#:
RF100031
Ships on Jul 7, 2026
50% off MSRP

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

$125.99

This product was last offered at the strikethrough price on
12-29-2025

$62.99 USD
Free Shipping

Quick connect union T-fitting for 1/4" Nylon affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
2826282
Mfg#:
82040
Special Order: No Guaranteed ETA
$23.99 USD
Free Shipping
on orders $49 and up
ES#4660615 - 49-36450-H - MACH Force-Xp 2-1/2 IN to 2 IN 304 Stainless Steel Cat-Back Exhaust System - Brushed Tips - Add up to +26 HP and +38 lb-ft of torque with this valve-controlled 304 stainless cat-back exhaust, delivering aggressive sound, improved throttle response, and easy bolt-on performance. - AFE - Porsche

Add up to +26 HP and +38 lb-ft of torque with this valve-controlled 304 stainless cat-back exhaust, delivering aggressive sound, improved throttle response, and easy bolt-on performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
4660615
Mfg#:
49-36450-H
Back Ordered
20% off MSRP

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

$4495.00

This product was last offered at the strikethrough price on
05-27-2026

$3596.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4680390 - 49-36450-C - MACH Force-Xp 2-1/2 IN to 2 IN 304 Stainless Steel Cat-Back Exhaust System - Carbon Tips - Add up to +26 HP and +38 lb-ft of torque with this valve-controlled 304 stainless cat-back exhaust, delivering aggressive sound, improved throttle response, and easy bolt-on performance. - AFE - Porsche

Add up to +26 HP and +38 lb-ft of torque with this valve-controlled 304 stainless cat-back exhaust, delivering aggressive sound, improved throttle response, and easy bolt-on performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
4680390
Mfg#:
49-36450-C
Back Ordered
20% off MSRP

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

$4495.00

This product was last offered at the strikethrough price on
05-27-2026

$3596.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4680395 - 49C36441 - MACH Force-Xp 304 Stainless Steel Primary Muffler Delete Pipe - Gain up to +22 HP and +33 lb-ft of torque with this valve-controlled 304 stainless exhaust, delivering an aggressive tone, improved flow, and true bolt-on performance with factory-style fitment. - AFE - Porsche

Gain up to +22 HP and +33 lb-ft of torque with this valve-controlled 304 stainless exhaust, delivering an aggressive tone, improved flow, and true bolt-on performance with factory-style fitment. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
4680395
Mfg#:
49C36441
Back Ordered
20% off MSRP

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

$2545.00

This product was last offered at the strikethrough price on
05-27-2026

$2036.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4680389 - 49-36450-B - MACH Force-Xp 2-1/2 IN to 2 IN 304 Stainless Steel Cat-Back Exhaust System - Black Tips - Add up to +26 HP and +38 lb-ft of torque with this valve-controlled 304 stainless cat-back exhaust, delivering aggressive sound, improved throttle response, and easy bolt-on performance. - AFE - Porsche

Add up to +26 HP and +38 lb-ft of torque with this valve-controlled 304 stainless cat-back exhaust, delivering aggressive sound, improved throttle response, and easy bolt-on performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
4680389
Mfg#:
49-36450-B
Back Ordered
20% off MSRP

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

$4495.00

This product was last offered at the strikethrough price on
05-27-2026

$3596.00 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#5457436 - UVM.76MM.X2 - Universal Valved Muffler Kit - Single Inlet / Single Outlet - 3.0" (76mm) - 2 Mufflers - 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#:
5457436
Mfg#:
UVM.76MM.X2
Back Ordered
$599.99 USD
Free Shipping

More About Performance Engine Parts

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