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Your Vehicle 2003 Porsche 911 996 Carrera 4S Coupe H6 3.6L

2003 Porsche 911 996 Carrera 4S Coupe H6 3.6L Performance Engine Parts

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ES#4680324 - 18U-01-0650-6 - 650cc Top Feed Injectors - Set of Six - DeatschWerks 98-05 Porsche Non-Turbo 650cc Top Feed Injectors - DeatschWerks - Porsche

DeatschWerks 98-05 Porsche Non-Turbo 650cc Top Feed Injectors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
DeatschWerks - Corporate Logo
ES#:
4680324
Mfg#:
18U-01-0650-6
Ships in 4 Business Days
$449.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4135503 - FSPOR996SPKGELBT - Porsche 996 Carrera Street Performance Package - Satin Black Quad Tips - The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. - Fabspeed - Porsche

The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Tiptronic Transmission or X51 Power Kit Equipped Vehicles Only

Brand:
Fabspeed - Corporate Logo
ES#:
4135503
Mfg#:
FSPOR996SPKGELBT
Ships on Jul 21, 2026
$7595.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4135504 - FSPOR996SPKGELPT - Porsche 996 Carrera Street Performance Package - Polished Chrome Quad Tips - The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. - Fabspeed - Porsche

The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Tiptronic Transmission or X51 Power Kit Equipped Vehicles Only

Brand:
Fabspeed - Corporate Logo
ES#:
4135504
Mfg#:
FSPOR996SPKGELPT
Ships on Jul 21, 2026
$7595.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#3627043 - FS.POR.996.E - Porsche 996 Carrera XperTune Performance Software (1999-2004) - Achieve maximum power gains and drivability without sacrificing reliability. Easily flash your Carrera with a Fabspeed ECU Tune utilizing the MyGenius handheld device - Fabspeed - Porsche

Achieve maximum power gains and drivability without sacrificing reliability. Easily flash your Carrera with a Fabspeed ECU Tune utilizing the MyGenius handheld device affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Fabspeed - Corporate Logo
ES#:
3627043
Mfg#:
FS.POR.996.E
Ships on Jul 21, 2026
$1569.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4135511 - FSPOR996SPKGELP - Porsche 996 Carrera Street Performance Package - Polished Chrome Quad Tips - The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. - Fabspeed - Porsche

The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Manual Transmission Vehicles Only

Brand:
Fabspeed - Corporate Logo
ES#:
4135511
Mfg#:
FSPOR996SPKGELP
Ships on Jul 21, 2026
$7595.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#4135510 - FSPOR996SPKGELB - Porsche 996 Carrera Street Performance Package - Satin Black Quad Tips - The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. - Fabspeed - Porsche

The ultimate upgrade for your 996! Includes Sport Headers, Sport Cats, Maxflo Mufflers, Carbon Fiber Competition Air Intake System, and an ECU Tune. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Manual Transmission Vehicles Only

Brand:
Fabspeed - Corporate Logo
ES#:
4135510
Mfg#:
FSPOR996SPKGELB
Ships on Jul 21, 2026
$7595.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#3971295 - 99636SSFULLKT - 996 Carrera 4S Full Performance Exhaust System - Includes Performance Headers, "Racing" Mufflers, 200 Cell Metallic Catalytic Converters, and Polished Oval Tips - Supersprint - Porsche

Includes Performance Headers, "Racing" Mufflers, 200 Cell Metallic Catalytic Converters, and Polished Oval Tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3971295
Mfg#:
99636SSFULLKT
Ships on Sep 30, 2026
$10120.99 USD
Free Shipping
ES#3053093 - 241801 - 996 Carrera 3.4/3.6 Performance Headers - High quality tubular headers hand made in Italy - 100% Stainless Steel Equal Length Tubular Headers - Supersprint - Porsche

High quality tubular headers hand made in Italy - 100% Stainless Steel Equal Length Tubular Headers affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3053093
Mfg#:
241801
Ships in 4 Business Days
$2820.00 USD
Free Shipping
ES#3102590 - 241242 - Supersprint Section 1 Metallic Sport Cats - A low exhaust note with a free flow design - Supersprint - Porsche

A low exhaust note with a free flow design affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3102590
Mfg#:
241242
Ships in 4 Business Days
$4406.99 USD
Free Shipping
ES#3971296 - 99636SSFULLKT1 - 996 Carrera 4S Full Performance Exhaust System - Includes Performance Headers, TV Approved Mufflers, 200 Cell Metallic Catalytic Converters, and Polished Oval Tips - Supersprint - Porsche

Includes Performance Headers, TÜV Approved Mufflers, 200 Cell Metallic Catalytic Converters, and Polished Oval Tips affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3971296
Mfg#:
99636SSFULLKT1
Ships on Sep 30, 2026
$10120.99 USD
Free Shipping
ES#3971738 - 996C4SCATBACKKT - 996 Carrera 4S CatBack System With Race Mufflers & Oval Tips - Hand Made in Italy - Quality fitment along with improved sound and performance for your 996 C4S - Supersprint - Porsche

Hand Made in Italy - Quality fitment along with improved sound and performance for your 996 C4S affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3971738
Mfg#:
996C4SCATBACKKT
Ships on Sep 30, 2026
$2894.99 USD
Free Shipping
ES#3971740 - 996C4SCATBACKKT1 - 996 Carrera 4S CatBack System With TUV Sport Mufflers & Oval Tips - Hand Made in Italy - Quality fitment along with improved sound and performance for your 996 C4S - Supersprint - Porsche

Hand Made in Italy - Quality fitment along with improved sound and performance for your 996 C4S affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3971740
Mfg#:
996C4SCATBACKKT1
Ships on Sep 30, 2026
$2959.99 USD
Free Shipping
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 2 Business Days
$499.99 USD
Free Shipping
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
Ships in 2 Business Days
$599.99 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 2 Business Days
$399.99 USD
Free Shipping
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 2 Business Days
$499.99 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.

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Manufacturer names and/or part numbers are used only for identification purposes.

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