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Inlet Manifold

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DISPLAYING 1 to 15 (of 15 products)
99311071250/1KITA
Product Information
Product Information
Intake manifolds & rubber sleeves Set of 6 . 




Fits:
Porsche 993 C2 / C4 1994-98
Porsche 993 Turbo

Click 'Zoom in' for large parts diagram.
Diagram ref no 9 & 12.



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99311071250
99311071250
96411068703
99311068300
99311068782
99311071201
96411068701
99311068751

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99311071250/1KIT
Product Information
Product Information
Intake manifolds Set of 6 



Fits:
Porsche 993 C2 / C4 1994-98
Porsche 993 Turbo

Click 'Zoom in' for large parts diagram.
Diagram ref no 12.

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99311071250
99311071250

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96411071101
Product Information
Product Information
Air intake manifold 964/993 to GT3, billet aluminium - Set of 6
Comes complete with thermal insulating manifold gaskets




Fits:
Porsche 964 - 1989 to 1993
Porsche 993 - 1994 to 1998

Tailored for GT3 Type Intakes:
Specially designed to fit GT3  intake manifolds (with built-in offsets) perfectly accommodating the narrower 964/993 engines.

Product Overview:
Crafted from top-quality aircraft aluminum, our Porsche 964/993 to GT3 Billet Intake Runners offer optimal performance. 
Available in head diameters of 41.5mm, 42.5mm, 44mm or 45.8mm with standard injector sizes. 

Versatile Compatibility and Configurations:
Compatible with standard rails or engineered for use with the IslandWorks/Nuke system, featuring a direct mount fuel regulator. 

Superior Craftsmanship and Finish:
Each runner boasts a natural machined finish and includes a base gasket insulator, ensuring optimal performance.

Important Note:
To ensure effective heat insulation, this product requires a flat cylinder head seal, offering better performance compared to the usual seal type.
Supplied with reinforced high thermal plastic gaskets for thermal insulation



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96411071101
96411071101
99311071250

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99311071250
Product Information
Product Information
Air intake manifold billet aluminium - Set of 6
Comes complete with manifold gaskets




Fits:
Porsche 964 - 1989 to 1993
Porsche 993 - 1994 to 1998

For use with the standard 964/993 inlet manifolds and 3 bolt manifolds

Product Details:
Replace your aging plastic intake runners on the Porsche 964/993 with meticulously 3D milled billet versions in aircraft aluminum, offering durability and aesthetic enhancement.

Enhanced Specifications:
Available in head diameters of 41.5mm or 42.5mm, paired with standard injector sizes. 

Flexible Compatibility and Configurations:
Compatible with standard rails 

Important Note:
To ensure effective heat insulation, this product requires a flat cylinder head seal, offering better performance compared to the usual seal type.
Supplied with reinforced high thermal plastic gaskets for thermal insulation

Craftsmanship and Finish:
Featuring a natural machined finish, these runners are equipped with a base gasket insulator for 



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99311071250
96411071101
99311071250

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Special Order item
99311054608
Product Information
Product Information
Air intake manifold support.



Fits:
Porsche 993 C2 / C4 3.6L 1995
Porsche 993 Turbo 3.6L 1995-98
Porsche 993 Carrera RS 3.75L 1995-96

Click 'zoom in' for large parts diagram.
Diagram ref no 18.

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99311054608
99311054608

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99311063053
Product Information
Product Information
Air intake manifold tube. Right.



Fits:
Porsche 993 Turbo 1991-93

Click 'Zoom in' for large parts diagram. 
Diagram ref no 21



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99311063053
99311063053
99311063052

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Special Order item
99611061870
Product Information
Product Information
Air Intake Manifold.




Fits:
Porsche 993 C2 / C4 / Turbo 1994-98

Diagram ref no 1.

KCP-0079
Product Information
Product Information
Upgrade your Porsche 964 / 993 with high-performance KCPerformance Intake Kit. Increase power by 30-50 hp with precision-engineered billet aluminum components, optimizing airflow and efficiency for a thrilling driving experience.

Porsche 964/993 Intake Kit: Maximize Performance
Push the boundaries of engine performance and experience the power of true technological innovation with Porsche 964/993 Intake Kit. Developed with passion and precision, this kit is designed for those who demand nothing less than ultimate performance from their vehicle. Whether you're after rapid acceleration, sharp throttle response, or a boost in power, this intake kit is the key to unlocking your Porsche's full potential.

The intake system upgrade for the Porsche 964-993 significantly enhances airflow and efficiency, delivering a power gain of approximately 30-50 hp. This increase results in improved performance, a more responsive engine, and better fuel economy, leading to greater driving pleasure.

At KCPerformance, we've chosen billet aluminum over plastic or carbon-reinforced 3D printed materials for our Porsche intake manifold system. This decision is rooted in the proven reliability and durability of billet aluminum, which can withstand the high-heat environment of air-cooled engines. It ensures robust performance, long-lasting dependability, and reliability, even under extreme conditions.

What's included in Porsche 964/993 Intake Kit:
• 82mm Throttle Body: Maximizes airflow for optimal performance.
• Billet Lightweight Throttle Body Adapter Housing: Integrated with an IAT/MAP sensor combination and vacuum connections for seamless functionality.
• Billet Lightweight Resonance Valve: OEM Porsche vacuum connection ensures reliable performance.
• 6 Modern Upgrade Injectors: Provide optimal fuel injection for maximum efficiency and performance.
• Lightweight Aluminum Intake Runners: Precision-machined billet aluminum ensures unobstructed airflow and boosts performance.
• Thermal PTFE Inlet/Intake Gasket: Effectively shields against heat soak, improving durability and performance.
• High-Quality Fuel Rail: Two billet fuel rails with stainless steel brackets and injector locking plates ensure secure fitment and optimal fuel delivery.
• DMR Fuel Pressure Regulator: Mounts directly to the fuel rail, allowing full control over fuel supply and performance.
• Original Porsche Intake Rubbers & Hose Clamps: 6 original intake rubbers and 12 hose clamps ensure secure installation.
• Complete Fuel Lines: Ensures a reliable and efficient fuel supply.

Precision and Innovation in Every Detail
Porsche 964/993 intake kit is engineered with precision, CNC-machined, and anodized in gunmetal gray. After thorough flow testing and detailed engineering, this kit delivers a sharp throttle response and an immediate air injection when you hit the gas pedal. Expect a power gain of 30-50 hp, elevating your Porsche's performance to new heights and ensuring a liberated power source that complements larger engine displacements.

Your Path to Engine Perfection
Achieve engine perfection with our Porsche 964/993 Intake Kit. Fine-tune your setup on a dyno to unlock its full potential and enjoy unparalleled power, speed, and driving excitement. This is your gateway to extraordinary performance and superior driving experience.

Maximize Every Ride
Seize the opportunity now to take your Porsche to the next level. Maximize every ride and dominate the road with Porsche 964/993 Intake Kit. 



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

KCP-0079
96411002300
96411062702
96411062703
96411062600
96411062802
96411062803
99311062704
99311062750

The product you are viewing cross references to these numbers
96411090100
Product Information
Product Information
Drive by wire inlet conversion kit
Convert the 964/993 induction to Drive by Wire set-up


Fits:
Porsche 964 - 1989 to 1993
Porsche 993 - 1994 to 1998

Product Overview:
Transform your Porsche 964's performance with this sleek and high-tech intake kit designed for Porsche 964/993. This innovation marks a transition from the typical accelerator cable-based throttle to an electronic "drive by wire" throttle body. This advanced change streamlines the intake system by eliminating unnecessary components, resulting in a cleaner engine bay appearance. 

This modification offers a more drivable setup for highly tuned engines while incorporating the precision of a drive by wire (DBW) throttle.

This enhanced drivability is a key feature for a tuned aircooled engine and allows for smooth idle control with a cold as well as a hot engine. It simply makes the engine feel more modern as compared to the old ITB (individual throttle bodies) setups lacking in mid range torque and difficulties with the idle control.

Precision-Engineered Components:

  • 82mm Throttle Body with Reinforced Industrial PA12 Manifold
  • CNC-Milled Intake Manifold Stacks Crafted from Billet Aluminium
  • Included Rubber Boots and Clamps for Easy Installation
  • Islandworks Resonance Tube with Valve and Solenoid, Manufactured from the Same PA12 Material
  • Integrated Manifold Pressure and Temperature Sensors
  • Essential Vacuum Lines for Optimal Performance

Kit Includes
Complete intake with all the parts seen in the image manufactured from modified PA12 using an industrial process. This intake plenum has been optimized to fit on a Porsche 964 or Porsche 993 and includes all vacuum ports for both brake vacuum and to maneuver the resonance flap.

The following parts will be reused from the 964 intake:

  • Rubber boots and clamps
  • Vacuum reservoir
  • The aluminum or plastic plenums
  • Resonance flap
  • Actuator and shaft

Note: the aluminum or plastic intake plenum is not included in the kit and neither are any of the items specifically listed as excluded above.



Related reference numbers
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96411090100
96411090100
96411090130
99611061996

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AMS905014
Product Information
Product Information

GT3 manifold electronic throttle conversion kit by Adapt Motorsport for naturally turbocharged, air-cooled Porsche 911 engines. Configurations are offered for three-bolt 964 turbo and 993 turbo applications.

Fits

  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) TURBO S 1994-97


What This Product Does

This conversion package uses large-volume 996 GT3-style intake hardware as the basis of an electronic throttle system for classic Porsche flat-six turbocharged engines. It combines the throttle body, fuel rails, intake adapters, resonance-flap hardware, pressure and temperature sensing, vacuum controls and associated fittings required to assemble the intake system.

Functions

  • Controls intake airflow through a Bosch electronic throttle body
  • Adapts GT3-style intake hardware to compatible air-cooled Porsche cylinder heads
  • Supports long, medium or short EV14-style fuel injectors through configurable fuel-rail spacers
  • Operates the resonance flap using a vacuum canister, solenoid and check valve
  • Provides connections for brake-booster vacuum, idle-air bypass and other vacuum requirements
  • Measures manifold pressure and intake-air temperature through a Bosch T-MAP sensor


Technical Details

  • Based around 996 GT3-style intake manifolds with 49mm ports; the manufacturer lists 43mm for a standard 964 manifold and 39mm for a 3.2 manifold
  • Bosch 82mm electronic throttle body supplied with connector kit
  • Bosch 1.15-bar T-MAP sensor supplied as standard; a 3.0-bar version is offered as an option
  • Three-bolt adapters are available with 42mm or 44mm ports for 964 and 993 turbo engines
  • Adapt Motorsport manifolds are cast aluminium, while the resonance flap and intake T-piece are CNC-machined and black anodised


Base Kit Contents

  • Adapt Motorsport high-flow intake T-piece with vacuum and T-MAP sensor ports
  • Fuel-rail kit with fittings
  • Bosch 82mm electronic throttle body and connector kit
  • CNC-machined resonance-flap assembly with sealed roller bearings
  • Bosch temperature and pressure sensor with connector kit
  • Throttle, resonance-flap and intake-adapter sleeves with hose clamps
  • Vacuum canister, solenoid, check valve, connector and hoses
  • Required fasteners and fittings


Configuration Information

Versions are available with or without a pair of Adapt Motorsport GT3 intake manifolds. Select the correct cylinder-head bolt pattern, adapter port diameter and manifold configuration for the engine. The optional cast-aluminium manifolds are designed around the shorter cylinder spacing of air-cooled Porsche 911 engines and include vacuum ports and discreet mounting points for wiring and control components.

FAQs

  • Is the electronic throttle body included? Yes. Every base kit includes a Bosch 82mm electronic throttle body and its connector kit.
  • Are GT3 intake manifolds supplied? This depends on the chosen configuration. Versions are available both with and without a pair of Adapt Motorsport manifolds.
  • Which injector lengths are supported? The configurable fuel-rail spacers accommodate long, medium and short EV14-style injectors.
  • Which cylinder-head patterns are covered? Two-bolt configurations suit 2.7, 3.0 and 3.2 engines, while three-bolt configurations are intended for 964 and 993 3.6 engines.

Check fitment for your specific vehicle, engine, cylinder-head pattern and required port diameter before ordering.

Special Order item
96411051001
Product Information
Product Information
Grommet for air intake distributor.



Fits:
Porsche 964 C2 / C4 / RS 1989-94
Porsche 993 C2 / C4 / RS / Turbo 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 21

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96411051001
96411051001

The product you are viewing cross references to these numbers
AMS9050289
Product Information
Product Information

Adapt Motorsport GT3 intake manifolds for air-cooled Porsche 911 engines using the brand's intake conversion system. Supplied as a pair, they combine cast-aluminium construction with geometry developed specifically for the shorter spacing of air-cooled engines.

Fits:

  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) C2 1994-97
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) RS 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) TURBO S 1994-97


What This Product Does

These manifolds adapt the Porsche GT3 intake manifold concept for air-cooled 911 engine architecture. Their interfaces accommodate the shorter engine spacing, while computational fluid dynamics modelling was used during development to refine the internal airflow geometry.

Functions

  • Provides GT3-style intake manifolds for compatible air-cooled engine conversions
  • Interfaces with Adapt Motorsport DBW intake adapters and throttle kits
  • Provides vacuum connections for the brake booster and idle-air bypass
  • Supports additional vacuum-source requirements within a custom installation
  • Uses discreet tabs to secure wiring and vacuum-control components


Technical Details

  • Supplied as a pair of intake manifolds
  • Cast-aluminium construction
  • Designed for the shorter intake spacing of air-cooled Porsche 911 engines
  • Factory-style external lugs are omitted for a cleaner installation
  • Additional integrated vacuum ports
  • Matching adapter sleeves are optional components for connection to the intake adapters, throttle body and resonance flap

FAQs

  • Is this a complete intake system? This product consists of a pair of intake manifolds. Matching adapter sleeves and other intake-system components are separate elements.
  • What material are the manifolds made from? They are manufactured from cast aluminium for a factory-style appearance.
  • Are vacuum connections included? Yes. The manifolds incorporate ports for brake-booster vacuum, idle-air bypass and other vacuum-source requirements.
  • Can they be used with electronic throttles? They are designed to integrate with Adapt Motorsport DBW intake adapters and throttle kits.

Check fitment for your specific vehicle, engine specification and intake conversion before ordering.

Special Order item
96411068703
Product Information
Product Information
Intake manifold rubber sleeve.



Fits:
Porsche 964 C2 / C4 / RS 1989-94
Porsche 993 Carrera 1994-98
Porsche 993 Turbo

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96411068703
96411068703

The product you are viewing cross references to these numbers
96411068703/8
Product Information
Product Information
Intake manifold rubber sleeve.

Fits:
Porsche 964 C2 / C4 / RS 1989-94
Porsche 993 Carrera 1994-98
Porsche 993 Turbo

Diagram ref no 7

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96411068703
96411068703

The product you are viewing cross references to these numbers
99311071250/1
Product Information
Product Information
Intake manifold.

Fits:
Porsche 993 C2 / C4 1994-98
Porsche 993 Turbo

Diagram ref no 12.

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Related, superseded, cross reference or alternative numbers for comparison.

99311071250
99311071250

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DISPLAYING 1 to 15 (of 15 products)
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About Inlet Manifold

Air Inlet Manifolds – Precision Airflow Distribution for Porsche Engines

Air inlet manifolds, often referred to as intake manifolds, are vital components in Porsche engines that ensure even air distribution to each cylinder. By controlling the air supply entering the combustion chambers, these manifolds optimise engine breathing, improving fuel efficiency, throttle response, and overall performance.

At Design911, we supply a wide range of genuine and high-quality air inlet manifolds for numerous Porsche models, including  911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each unit is crafted from high-strength materials to deliver consistent airflow, exceptional durability, and precise fitment — maintaining your Porsche’s power and refinement.

What Do Air Inlet Manifolds Do?

The air inlet manifold is a critical part of the intake system that manages and distributes air from the throttle body into the engine’s cylinders. Its functions include:

  • Delivering uniform airflow to each cylinder for efficient combustion.
  • Optimising torque and power output across all engine speeds.
  • Balancing air pressure for smoother idling and acceleration.
  • Enhancing engine cooling and fuel economy through consistent airflow management.

In performance-oriented Porsche engines, the air inlet manifold is carefully tuned to maximise airflow dynamics — contributing directly to the car’s responsiveness and driving feel.

Why Do Air Inlet Manifolds Fail?

Air inlet manifolds operate under constant pressure, heat, and vibration, which can lead to deterioration over time. Common causes of failure include:

  • Cracks or leaks in plastic or aluminium housings due to heat cycling.
  • Carbon buildup restricting airflow through the manifold runners.
  • Faulty gaskets or seals allowing unmetered air to enter the system.
  • Vacuum leaks affecting idle stability and performance.
  • Mechanical damage caused by backfires or overpressure.

Symptoms of a failing air inlet manifold may include rough idling, loss of power, engine misfires, increased fuel consumption, or a check engine light related to air intake irregularities.

Why Replace a Damaged Air Inlet Manifold?

A cracked or leaking air manifold can cause air imbalance, poor combustion, and reduced engine efficiency. Replacing the component restores smooth airflow, optimises fuel economy, and protects engine health.

Benefits of replacement include:

  • Restored airflow and balanced combustion.
  • Improved throttle response and power delivery.
  • Reduced emissions and improved fuel efficiency.
  • Long-term reliability with manufacturer-quality precision.

All air inlet manifolds available at Design911 are made with high-quality materials, precision-engineered sealing surfaces, and optimised airflow geometry — ensuring lasting durability and peak performance in both standard and high-performance Porsche engines.

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