Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
Inlet Manifold
Fits:
Porsche 993 C2 / C4 1994-98
Porsche 993 Turbo
Click 'Zoom in' for large parts diagram.
Diagram ref no 9 & 12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311071250
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 993 C2 / C4 1994-98
Porsche 993 Turbo
Click 'Zoom in' for large parts diagram.
Diagram ref no 12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311071250
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
The Adapt Motorsport 996 GT3 intake manifold adapter kit connects a GT3 manifold to compatible air-cooled Porsche 964 and 993 engines. Its compact, CNC-machined aluminium adapters are tapered to match the selected cylinder-head port with the manifold’s 49mm bore and comes with fuel rails.
Fits:
- Porsche 964 (911) 1989–1994
- Porsche 964 (911) C2 1989–93
- Porsche 964 (911) C4 1989–93
- Porsche 993 (911) 1994–1998
- Porsche 993 (911) C2 1994–97
- Porsche 993 (911) C4 1994–97
- Porsche 993 (911) C2S 1994–97
- Porsche 993 (911) C4S 1994–97
What This Product Does
The kit provides the physical transition required to install 996 GT3 intake manifolds on compatible three-bolt air-cooled cylinder heads. Its short design limits the total height of the intake assembly, helping to reduce potential interference around the idle-air control components, intake boot and engine-bay insulation.
The injector is positioned over the original relief in the intake port. The adapters also provide mounting provisions for Adapt Motorsport fuel rails when the appropriate fuel-rail configuration is selected.
Functions
- Connects a 996 GT3 intake manifold to compatible Porsche 964 and 993 cylinder heads
- Transitions the selected intake-port diameter to the manifold’s 49mm bore
- Maintains a compact intake-system height
- Positions the injector above the original intake-port relief
- Supports Bosch fuel injectors with 14mm O-ring fittings
- Provides mounting points for compatible Adapt Motorsport fuel rails
Technical Details
- Precision CNC-machined from high-grade aluminium
- Black anodised finish
- Standard adapter height: 78mm
- Tall adapter height: 113mm, adding 35mm of runner length
- 42mm adapters are specified for standard 964 ports measuring approximately 41.5mm
- 44mm adapters are specified for standard 993 ports measuring approximately 43.5mm;
Injector Compatibility
The supplied fuel-rail spacer posts accommodate long-body Bosch EV1, EV6 and EV14 injectors. Markings on the posts allow them to be shortened for compatible medium- or short-length injectors. All injectors must use 14mm O-ring fittings.
Kit Contents
- Six CNC-machined aluminium intake adapters
- Four fuel-rail spacer posts
- Four bolts for standard full-length Bosch injectors
- Fuel rails and fittings when a fuel-rail kit configuration is selected
GT3 intake manifolds, rubber joiners, fuel injectors and hose clamps are not included. An advanced single fuel-rail option with an integrated pressure regulator and damper is available only with compatible adapter and fuel-rail kit configurations.
Power-Steering Compatibility
Versions identified as “No PS” are intended for installations without a hydraulic power-steering pump, including suitable G-model conversions or vehicles using electric power steering. No PS adapters will not fit a Porsche 964 or 993 while its hydraulic power-steering pump remains installed.
Why Correct Selection Matters
The adapter diameter should correspond with the measured cylinder-head port. Correct selection provides the intended transition into the head, while the appropriate height, injector arrangement and power-steering clearance allow the converted intake assembly to be installed as designed.
FAQs
- Which size is used with a standard 964 port? The manufacturer specifies the 42mm adapter for a standard 41.5mm 964 intake port.
- Which size is used with a standard 993 port? The 44mm adapter is specified for the standard 43.5mm 993 intake port.
- When should the 46mm option be considered? It is offered for applicable RS or non-standard enlarged ports. Measure the cylinder-head ports before selection.
- Can different injector lengths be installed? Yes. The marked posts may be shortened for compatible long, medium or short Bosch injectors.
- Are the GT3 manifolds included? No. Manifolds, rubber joiners, injectors and hose clamps must be obtained separately.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
AMS9050094
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
This Adapt Motorsport kit adapts a 996 GT3 intake manifold to Porsche 964 and 993 engines with three-bolt cylinder heads. Its short, CNC-machined aluminium adapters preserve a compact intake height while supporting compatible fuel-rail and injector configurations.
Fits
- Porsche 964 (911) 1989–1994
- Porsche 964 (911) C2 1989–93
- Porsche 964 (911) C4 1989–93
- Porsche 993 (911) 1994–1998
- Porsche 993 (911) C2 1994–97
- Porsche 993 (911) C4 1994–97
- Porsche 993 (911) C2S 1994–97
- Porsche 993 (911) C4S 1994–97
What This Product Does
The adapters provide the interface required to install 996 GT3 intake manifolds on compatible air-cooled 3.6ltr engines. Their tapered internal form matches the selected cylinder-head port to the manifold's 49mm bore, while the compact design helps reduce interference around the idle-air control system, intake boot and engine-bay insulation.
Functions
- Connects 996 GT3 intake manifolds to three-bolt air-cooled cylinder heads
- Transitions the selected intake-port diameter to the manifold's 49mm bore
- Maintains a compact overall intake-system height
- Supports Adapt Motorsport fuel-rail installations
- Positions the injector above the original intake-port relief
- Accommodates long, medium and short Bosch injector formats
Technical Details
- Precision CNC-machined from high-grade aluminium with a black anodised finish
- Standard adapter height: 78mm
- Tall adapter option: 113mm, providing an additional 35mm of runner length
- 42mm adapters suit standard 964 ports, which measure approximately 41.5mm
- 44mm adapters suit standard 993 ports, which measure approximately 43.5mm; 46mm options suit applicable non-standard or RS ports
- Compatible with Bosch EV1, EV6 and EV14 fuel injectors using 14mm O-ring fittings
Kit Contents
- Six CNC-machined aluminium intake adapters
- Four fuel-rail spacer posts
- Four bolts for standard full-length Bosch injectors
The spacer posts are marked so they can be shortened for medium- or short-length injectors. Intake manifolds, rubber joiners, injectors and hose clamps are not included. Fuel-rail-equipped configurations and an advanced single fuel rail with an integrated pressure regulator and damper are optional versions of the kit.
Why Replacement Matters
Correct adapter dimensions are essential when combining the later GT3 manifold with air-cooled three-bolt cylinder heads. Matching the port size maintains a suitable transition into the cylinder head, while the specified adapter height and injector position help the converted intake assembly fit and operate as intended.
FAQs
- Which size suits a standard Porsche 964?
Select the 42mm adapter for a standard 41.5mm 964 intake port. - Which size suits a standard Porsche 993?
Select the 44mm adapter for a standard 43.5mm 993 intake port. - When is the 46mm version appropriate?
It is intended for applicable RS engines or cylinder heads with non-standard enlarged ports. Confirm the measured port diameter first. - Can different injector lengths be used?
Yes. The marked spacer posts can be shortened to suit long, medium or short Bosch injectors with 14mm O-ring fittings. - What is the difference between the standard and tall adapters?
The standard version is 78mm high. The tall version measures 113mm, adding 35mm to the intake runner length. - Are the No PS versions suitable for a standard 964 or 993?
No. They are for installations without a hydraulic power-steering pump, such as some G Model conversions or vehicles using electric power steering.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
AMS905009
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
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
The product you are viewing cross references to these numbers
- 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 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) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311071250
The product you are viewing cross references to these numbers
- 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 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) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
The Genuine Porsche Air Intake Manifold Connector Seal 99311072340 is a replacement sealing component designed to provide an airtight connection within the intake manifold system on compatible Porsche applications.
Fits:
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
Diagram Ref No 24
The engine's intake system relies on properly sealed connections to ensure that the correct amount of air reaches the engine. This seal is fitted at the relevant intake manifold connector, helping prevent unwanted air from entering through the joint.
Over time, exposure to engine heat, vibration and repeated temperature cycles can cause the original seal to harden, shrink, crack or lose elasticity. A deteriorated intake seal can create an air or vacuum leak, potentially affecting idle quality, engine performance and air/fuel mixture control.
What This Product Does:
The intake manifold connector seal creates an airtight joint between the relevant components of the engine intake system.
During operation, the engine draws air through the intake system and into the cylinders. Connections downstream in the intake tract must remain properly sealed so that unwanted air cannot enter through gaps between components.
A correctly functioning connector seal helps:
- Maintain an airtight intake connection
- Prevent vacuum and intake air leaks
- Reduce unwanted or unmetered air entering the engine
- Support stable engine idle
- Maintain consistent engine performance
- Support correct air/fuel mixture control
- Maintain intake-system integrity
Even a relatively small leak can affect engine operation, particularly at idle when intake vacuum can be significant.
Symptoms Of Wear Or Failure:
A deteriorated intake seal can allow air to enter through the manifold connection rather than through the intended intake path.
Possible symptoms include:
- Rough or unstable idle
- Higher than normal idle speed
- Fluctuating or hunting idle
- Engine hesitation
- Reduced throttle response
- Poor or inconsistent engine performance
- Lean-running symptoms
- Difficult starting
- Engine misfires
- Increased fuel consumption
- Engine warning light on vehicles with applicable diagnostics
- Air/fuel mixture or lean-condition fault codes where applicable
- Hissing or whistling noise from the intake area
Symptoms may vary according to the size and location of the leak.
Why Replacement Matters:
An intake air leak can affect the engine's ability to maintain the intended air/fuel mixture and stable operating conditions.
Replacing a deteriorated intake manifold connector seal helps:
- Restore an airtight intake connection
- Prevent unwanted air or vacuum leakage
- Improve idle stability
- Support consistent throttle response
- Maintain correct intake-system operation
- Support accurate air/fuel mixture control
- Reduce lean-running problems caused by intake leaks
- Restore reliable engine performance
Ignoring an intake leak can result in persistent drivability problems and make accurate engine tuning or diagnosis more difficult.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311072340
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
The Victor Reinz Air Intake Manifold Connector Seal is a replacement sealing component designed to provide an airtight connection within the intake manifold system on compatible Porsche applications.
Fits:
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
Diagram Ref No 24
The engine's intake system relies on properly sealed connections to ensure that the correct amount of air reaches the engine. This seal is fitted at the relevant intake manifold connector, helping prevent unwanted air from entering through the joint.
Over time, exposure to engine heat, vibration and repeated temperature cycles can cause the original seal to harden, shrink, crack or lose elasticity. A deteriorated intake seal can create an air or vacuum leak, potentially affecting idle quality, engine performance and air/fuel mixture control.
What This Product Does:
The intake manifold connector seal creates an airtight joint between the relevant components of the engine intake system.
During operation, the engine draws air through the intake system and into the cylinders. Connections downstream in the intake tract must remain properly sealed so that unwanted air cannot enter through gaps between components.
A correctly functioning connector seal helps:
- Maintain an airtight intake connection
- Prevent vacuum and intake air leaks
- Reduce unwanted or unmetered air entering the engine
- Support stable engine idle
- Maintain consistent engine performance
- Support correct air/fuel mixture control
- Maintain intake-system integrity
Even a relatively small leak can affect engine operation, particularly at idle when intake vacuum can be significant.
Symptoms Of Wear Or Failure:
A deteriorated intake seal can allow air to enter through the manifold connection rather than through the intended intake path.
Possible symptoms include:
- Rough or unstable idle
- Higher than normal idle speed
- Fluctuating or hunting idle
- Engine hesitation
- Reduced throttle response
- Poor or inconsistent engine performance
- Lean-running symptoms
- Difficult starting
- Engine misfires
- Increased fuel consumption
- Engine warning light on vehicles with applicable diagnostics
- Air/fuel mixture or lean-condition fault codes where applicable
- Hissing or whistling noise from the intake area
Symptoms may vary according to the size and location of the leak.
Why Replacement Matters:
An intake air leak can affect the engine's ability to maintain the intended air/fuel mixture and stable operating conditions.
Replacing a deteriorated intake manifold connector seal helps:
- Restore an airtight intake connection
- Prevent unwanted air or vacuum leakage
- Improve idle stability
- Support consistent throttle response
- Maintain correct intake-system operation
- Support accurate air/fuel mixture control
- Reduce lean-running problems caused by intake leaks
- Restore reliable engine performance
Ignoring an intake leak can result in persistent drivability problems and make accurate engine tuning or diagnosis more difficult.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311072340
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311054608
The product you are viewing cross references to these numbers
- 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
Fits:
Porsche 993 C2 / C4 / Turbo 1994-98
Diagram ref no 1.
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
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
The product you are viewing cross references to these numbers
- 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) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Throttle body diameter - 82mm
Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Silverlake Projects' complete Drive-by-Wire (DBW) intake system, designed specifically for 964 and 993 engines to be converted to DBW (drive by wire) throttle body.
Our system includes:
- 6 precision-engineered runners crafted from anodized structural aluminum
- 2 anodized fuel rails, also made from structural aluminum for durability and performance
- Dual GT3-style intake manifolds in carbon fiber for weight reduction and strength
- Intake T-tube in glass-reinforced thermoplastic, compatible with a 82mm DBW throttle body
- Resonance flap or resonance flap delete tube in glass-reinforced thermoplastic, complete with a vacuum actuator
- 6 high-temperature silicone couplers for the manifold-to-runner connections
- 4 high-temperature silicone couplers for the manifold-to-T-tube/resonance flap connections
- TMAP sensor for accurate air intake measurements
- Vacuum reservoir for optimized engine performance
- All mounting hardware made from lightweight titanium alloy
Inlet port sizes: 42mm
Weighing just 5.5 kg (12 lbs), our intake system is nearly half the weight of the stock 964 intake, which weighs 11.5 kg (25.3 lbs), offering a substantial weight savings for enhanced performance
Why our system?
- 50% lighter than stock. Lighter than most systems given use of carbon fiber, thermoplastics, and titanium.
- Direct mount of fuel rail to the runner for perfect injector press fit.
- CNC machined PTFE inserts in between the cylinder head and the runner for a superior insulation from the heat from the cylinder heads, especially when in idle and street applications.
- Custom nitrile O-rings in between the runner and the cylinder head, and the intake T and throttle body for a perfect seal
- Silverlake’s precision-molded OEM+ silicone sleeves with a much higher temperature resistance than rubber, offering a perfect fit with the opposing components for better airflow, and an unmatched appearance.
- All mounting fasteners in Tin coated titanium alloy, for reduced weight and un unbeatable appearance
- Your choice between 82mm or 92mm drive by wire throttle bodies, the latter offering 25% more surface for high displacement high performance applications
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311062704
The product you are viewing cross references to these numbers
- 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 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
Throttle body diameter - 82mm
Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Silverlake Projects' complete Drive-by-Wire (DBW) intake system, designed specifically for 964 and 993 engines to be converted to DBW (drive by wire) throttle body.
Our system includes:
- 6 precision-engineered runners crafted from anodized structural aluminum
- 2 anodized fuel rails, also made from structural aluminum for durability and performance
- Dual GT3-style intake manifolds in carbon fiber for weight reduction and strength
- Intake T-tube in glass-reinforced thermoplastic, compatible with a 82mm DBW throttle body
- Resonance flap or resonance flap delete tube in glass-reinforced thermoplastic, complete with a vacuum actuator
- 6 high-temperature silicone couplers for the manifold-to-runner connections
- 4 high-temperature silicone couplers for the manifold-to-T-tube/resonance flap connections
- TMAP sensor for accurate air intake measurements
- Vacuum reservoir for optimized engine performance
- All mounting hardware made from lightweight titanium alloy
Inlet port sizes: 42mm
Weighing just 5.5 kg (12 lbs), our intake system is nearly half the weight of the stock 964 intake, which weighs 11.5 kg (25.3 lbs), offering a substantial weight savings for enhanced performance
Why our system?
- 50% lighter than stock. Lighter than most systems given use of carbon fiber, thermoplastics, and titanium.
- Direct mount of fuel rail to the runner for perfect injector press fit.
- CNC machined PTFE inserts in between the cylinder head and the runner for a superior insulation from the heat from the cylinder heads, especially when in idle and street applications.
- Custom nitrile O-rings in between the runner and the cylinder head, and the intake T and throttle body for a perfect seal
- Silverlake’s precision-molded OEM+ silicone sleeves with a much higher temperature resistance than rubber, offering a perfect fit with the opposing components for better airflow, and an unmatched appearance.
- All mounting fasteners in Tin coated titanium alloy, for reduced weight and un unbeatable appearance
- Your choice between 82mm or 92mm drive by wire throttle bodies, the latter offering 25% more surface for high displacement high performance applications
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611061870
The product you are viewing cross references to these numbers
- 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 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
Throttle body diameter - 92mm
Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Silverlake Projects' complete Drive-by-Wire (DBW) intake system, designed specifically for 964 and 993 engines to be converted to DBW (drive by wire) throttle body.
Our system includes:
- 6 precision-engineered runners crafted from anodized structural aluminum
- 2 anodized fuel rails, also made from structural aluminum for durability and performance
- Dual GT3-style intake manifolds in carbon fiber for weight reduction and strength
- Intake T-tube in glass-reinforced thermoplastic, compatible with a 92mm DBW throttle body
- Resonance flap or resonance flap delete tube in glass-reinforced thermoplastic, complete with a vacuum actuator
- 6 high-temperature silicone couplers for the manifold-to-runner connections
- 4 high-temperature silicone couplers for the manifold-to-T-tube/resonance flap connections
- TMAP sensor for accurate air intake measurements
- Vacuum reservoir for optimized engine performance
- All mounting hardware made from lightweight titanium alloy
Inlet port sizes: 42mm
Weighing just 5.5 kg (12 lbs), our intake system is nearly half the weight of the stock 964 intake, which weighs 11.5 kg (25.3 lbs), offering a substantial weight savings for enhanced performance
Why our system?
- 50% lighter than stock. Lighter than most systems given use of carbon fiber, thermoplastics, and titanium.
- Direct mount of fuel rail to the runner for perfect injector press fit.
- CNC machined PTFE inserts in between the cylinder head and the runner for a superior insulation from the heat from the cylinder heads, especially when in idle and street applications.
- Custom nitrile O-rings in between the runner and the cylinder head, and the intake T and throttle body for a perfect seal
- Silverlake’s precision-molded OEM+ silicone sleeves with a much higher temperature resistance than rubber, offering a perfect fit with the opposing components for better airflow, and an unmatched appearance.
- All mounting fasteners in Tin coated titanium alloy, for reduced weight and un unbeatable appearance
- Your choice between 82mm or 92mm drive by wire throttle bodies, the latter offering 25% more surface for high displacement high performance applications
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311062704
The product you are viewing cross references to these numbers
- 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 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
Throttle body diameter - 92mm
Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Silverlake Projects' complete Drive-by-Wire (DBW) intake system, designed specifically for 964 and 993 engines to be converted to DBW (drive by wire) throttle body.
Our system includes:
- 6 precision-engineered runners crafted from anodized structural aluminum
- 2 anodized fuel rails, also made from structural aluminum for durability and performance
- Dual GT3-style intake manifolds in carbon fiber for weight reduction and strength
- Intake T-tube in glass-reinforced thermoplastic, compatible with a 92mm DBW throttle body
- Resonance flap or resonance flap delete tube in glass-reinforced thermoplastic, complete with a vacuum actuator
- 6 high-temperature silicone couplers for the manifold-to-runner connections
- 4 high-temperature silicone couplers for the manifold-to-T-tube/resonance flap connections
- TMAP sensor for accurate air intake measurements
- Vacuum reservoir for optimized engine performance
- All mounting hardware made from lightweight titanium alloy
Inlet port sizes: 42mm
Weighing just 5.5 kg (12 lbs), our intake system is nearly half the weight of the stock 964 intake, which weighs 11.5 kg (25.3 lbs), offering a substantial weight savings for enhanced performance
Why our system?
- 50% lighter than stock. Lighter than most systems given use of carbon fiber, thermoplastics, and titanium.
- Direct mount of fuel rail to the runner for perfect injector press fit.
- CNC machined PTFE inserts in between the cylinder head and the runner for a superior insulation from the heat from the cylinder heads, especially when in idle and street applications.
- Custom nitrile O-rings in between the runner and the cylinder head, and the intake T and throttle body for a perfect seal
- Silverlake’s precision-molded OEM+ silicone sleeves with a much higher temperature resistance than rubber, offering a perfect fit with the opposing components for better airflow, and an unmatched appearance.
- All mounting fasteners in Tin coated titanium alloy, for reduced weight and un unbeatable appearance
- Your choice between 82mm or 92mm drive by wire throttle bodies, the latter offering 25% more surface for high displacement high performance applications
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611061870
The product you are viewing cross references to these numbers
- 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 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
Convert to Drive by Wire when retro fitting a turbocharger or supercharger
Fits:
Porsche 911 - 1974 - 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
911 used 2-Bolt type
964/993 uses 3-Bolt type
Please Note:
The aluminium or plastic intake plenum (inlet manifold) is not included in the kit
Product Overview:
Inject power and precision into your vintage aircooled engine, now also for turbo or supercharged cars.
To be used when converting a G-Model 911 or a 964/993 engine to a turbocharged/supercharged engine with a 964 induction based Drive by Wire set-up
Conversion kit to a Porsche 964 based intake system to become a DBW (Drive by wire) intake based 74mm original Bosch throttle body (Sometimes referred to as 76mm) specifically executed all in CNC milled billet aluminum.
This is sold either with the intention to convert a Porsche 964/993 engine or to adapt and convert a 964 intake onto a G-model car when turbocharging.
Kit includes:
- Throttle body runner for 74mm throttle body in aluminum
- Vacuum port on throttle body runner
- Original Bosch electronic throttle body
- Original Bosch MAP-T-sensor
- Connecting pipe out of aluminum replacing the resonance tube
Intake runners for the Porsche 911 G-model (2-bolt) or 964/993 (3-bolt) engine are made out of billet aluminium, 3D milled in a 5-axis machine. The port diameter indicated in the options is the diameter of the port in the cylinder head.
The following parts are to be reused from your original 964 intake:
Rubber boots and clamps
The plenums (inlet manifolds)
Please Note:
Aluminium 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
Related, superseded, cross reference or alternative numbers for comparison.
93011003404
The product you are viewing cross references to these numbers
- 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 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 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
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.