Inlet Manifold

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
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96411071101

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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

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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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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

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Air Intake Manifold.

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

Diagram ref no 1.

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. 



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KCP-0079

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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.

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96411090100

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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

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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.

Intake manifold gasket. Sold each.

Fits:
Porsche 964 1989-94
Porsche 993 1995-98

This product supersedes Porsche's old part numbers:
- 96411071300
- 96411071301

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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99311071301

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Intake manifold gasket.

Fits:
Porsche 964 1989-94
Porsche 993 1995-98

This product supersedes Porsche's old part numbers:
- 96411071300
- 96411071301

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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99311071301

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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

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Intake manifold rubber sleeve
OE Match intake manifold rubber sleeve for Porsche 964 and 993 models. This replacement rubber coupling forms part of the engine air intake system, helping provide a secure and sealed connection between intake components for correct airflow and reliable engine operation.

Fits:
Porsche 964 C2 / C4 / RS 1989 - 1994
Porsche 993 Carrera 1994 - 1998
Porsche 993 Turbo

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Intake Manifold.

The OE MATCH Intake Manifold (Part Number 99311071250/1) is a high-quality replacement component designed to restore efficient airflow and reliable engine operation on Porsche 911 (993) Carrera 2, Carrera 4 and Turbo models.

Fits:

• Porsche 993 C2 / C4 1994-98
• Porsche 993 Turbo

Diagram Ref No 12

Manufactured to match the original equipment specifications, this intake manifold component forms an important part of the engine's air induction system, helping deliver the required airflow towards the engine's combustion chambers.

The Porsche 993's six-cylinder boxer engine relies on a properly sealed intake system to maintain efficient combustion, consistent throttle response and smooth engine performance. Each intake runner provides a passage for air to travel through the induction system, helping support the engine's intended operating characteristics.

Over time, original intake manifold components can become damaged through heat exposure, engine vibration, ageing and repeated maintenance. Cracks, damaged mounting surfaces or deteriorated connecting sleeves can allow unwanted air to enter the intake system, potentially affecting engine performance and efficiency.

A leaking or damaged intake manifold connection may contribute to rough idling, hesitation during acceleration, reduced engine responsiveness and irregular combustion.

The OE MATCH Intake Manifold provides a practical replacement for a damaged original component, helping restore the correct airflow passage, maintain the integrity of the intake system and preserve the factory engine configuration.

Ideal for Porsche 993 engine maintenance, intake system repairs, air leak diagnosis and classic Porsche restoration projects.

What This Product Does:
The intake manifold is a vital part of the engine's air induction system, responsible for directing air towards the engine cylinders.

Its primary functions include:

• Directs Intake Air: Provides a passage for air to travel through the intake system towards the engine's intake ports.
• Supports Efficient Combustion: Helps deliver the air required for the correct combustion process.
• Maintains Intake System Integrity: Works with the associated rubber sleeves, seals and mounting components to maintain a properly sealed induction system.
• Supports Smooth Engine Operation: Helps maintain consistent airflow for stable idling and normal engine running.
• Maintains Throttle Response: Supports the engine's ability to respond smoothly to changes in throttle demand.
• Reduces Unmetered Air Entry: Correct sealing helps prevent air from entering the system through unintended openings.
• Supports Engine Efficiency: Helps maintain the intended intake arrangement for correct air delivery and combustion.
• Maintains Cylinder Air Supply: Forms part of the individual air intake path serving the engine's six-cylinder configuration.
• Supports Original Engine Performance: Preserves the factory-style intake passage and installation geometry.
• Maintains Original Equipment Fitment: Designed to replace the corresponding factory intake manifold component.

Symptoms Of Wear Or Failure:
The intake manifold and its associated connections are subjected to engine heat, vibration and continuous airflow throughout their service life.

While the manifold runner itself is generally durable, physical damage, ageing seals or deteriorated connecting components can lead to intake air leaks and engine operating problems.

Common symptoms include:

• Rough or Unstable Idle: Unmetered air entering the intake system may cause the engine to idle unevenly.
• Engine Hesitation: Air leaks may contribute to hesitation or inconsistent response during acceleration.
• Reduced Engine Performance: A damaged or leaking intake connection may affect the engine's normal operating characteristics.
• Visible Cracks or Fractures: Physical damage to the manifold may allow air to escape or enter through an unintended opening.
• Intake Air Leaks: Damaged mounting surfaces, seals or connecting sleeves may allow unwanted air into the induction system.
• Hissing or Whistling Noises: Air leaking through a cracked manifold or deteriorated connection may produce noticeable intake noises.
• Irregular Engine Running: Inconsistent intake airflow may contribute to uneven combustion or running quality.
• Increased Fuel Consumption: Intake air leaks may affect engine management corrections and contribute to inefficient operation.
• Engine Management Warning Light: Certain intake-related faults may trigger diagnostic warnings or stored fault codes.
• Damaged Mounting Points: Cracked or distorted mounting areas may prevent the manifold from being securely installed.
• Loose or Deteriorated Rubber Sleeves: Ageing connecting sleeves can lose flexibility, split or allow unwanted air leakage.
• Visible Damage Following Repairs: Incorrect removal, overtightening or accidental impact may damage the original manifold.

Why Replacement Matters:
Replacing a cracked, damaged or leaking intake manifold helps maintain the correct operation and reliability of the Porsche 993's engine air induction system.

Key Benefits of Replacement:

• Restores Correct Intake Airflow: Replaces damaged components to help maintain the intended passage of air towards the engine.
• Helps Eliminate Intake Air Leaks: Restores sealing integrity where the original manifold or its mounting surfaces are damaged.
• Supports Smooth Engine Idling: Helps reduce running irregularities caused by confirmed intake leaks.
• Improves Engine Responsiveness: Restoring the correct intake arrangement can help recover normal throttle response where leakage was affecting performance.
• Maintains Efficient Combustion: Helps preserve the intended air delivery characteristics of the engine.
• Reduces Unmetered Air Entry: Supports correct airflow measurement and engine management operation.
• Protects Engine Reliability: Helps prevent continued operation with an unresolved intake system defect.
• Maintains Factory Specifications: Designed to match the original Porsche intake manifold arrangement.
• Original Equipment-Style Fitment: Provides the appropriate replacement shape and connections for compatible engines.
• Supports Long-Term Engine Performance: Helps preserve normal engine operation by maintaining the integrity of the induction system.
• Ideal During Engine Maintenance: Suitable for replacement during intake system refurbishment or when repairing damaged components.
• Cost-Effective Repair: Allows an individual damaged runner to be replaced without necessarily renewing the entire intake assembly.
• Suitable for Classic Porsche Restoration: Helps maintain the original appearance and configuration of the Porsche 993 engine.

A damaged intake manifold may initially cause only a minor air leak or occasional running irregularity. However, continued operation with an intake leak can result in inconsistent air-fuel mixture control and reduced engine performance.

Replacing a defective runner with an OE MATCH component helps restore the intended intake system configuration and supports reliable engine operation.

Where the original rubber connecting sleeves have hardened, cracked or deteriorated, these should also be inspected and replaced as necessary to ensure the intake system is correctly sealed.

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