Turbo Chargers / Intercoolers & Parts

Bracket for pressure line.

Fits:
Porsche 996 Turbo / GT2 2001-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 38

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Related, superseded, cross reference or alternative numbers for comparison.

99611067170

The product you are viewing cross references to these numbers

Gasket for intercooler air guide.

Fits:
Porsche 996 Turbo / GT2 2001-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 39

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Related, superseded, cross reference or alternative numbers for comparison.

9965757

The product you are viewing cross references to these numbers

IWG75 Porsche 996 (911) GT2 Black 24PSI

The Porsche 996 GT2 Internal Wastegate Actuator (IWG) provides better turbo response and greater sensitivity when managing boost pressures. Designed as a direct bolt-on replacement for the factory part, the Porsche IWG is easy to install and requires no special tools or fabrication. We've taken the proven technology from our WG38, 40 and 45mm External Wastegates and applied it to the Internal Wastegate Actuator.

Important legal notice (US)

WARNING - Proposition 65 Compliance Statement:
It is the responsibility of Turbosmart to warn its customers and employees that some products sold on this website contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

Important Emissions Note:
This product does not have a CARB EO #; it is not legal for sale or use in CA on pollution controlled motor vehicles. This is intended as a "Race Only" product to be used solely for competition. It's use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization; any other use including recreational off-road use, may be a violation of local, state and federal laws. It is the buyer's responsibility to verify legal use of this product for the intended application and use.

IWG75 Porsche 996 (911) GT2 Black 7PSI

The Porsche 996 GT2 Internal Wastegate Actuator (IWG) provides better turbo response and greater sensitivity when managing boost pressures. Designed as a direct bolt-on replacement for the factory part, the Porsche IWG is easy to install and requires no special tools or fabrication. We've taken the proven technology from our WG38, 40 and 45mm External Wastegates and applied it to the Internal Wastegate Actuator.

Important legal notice (US)

WARNING - Proposition 65 Compliance Statement:
It is the responsibility of Turbosmart to warn its customers and employees that some products sold on this website contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

Important Emissions Note:
This product does not have a CARB EO #; it is not legal for sale or use in CA on pollution controlled motor vehicles. This is intended as a "Race Only" product to be used solely for competition. It's use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization; any other use including recreational off-road use, may be a violation of local, state and federal laws. It is the buyer's responsibility to verify legal use of this product for the intended application and use.

Intercooler intake duct. Satin black.

Fits:
Porsche 996 Turbo/GT2 2001-05

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

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

99657557

The product you are viewing cross references to these numbers

Intercooler mount bracket.

Fits:
Porsche 996 Turbo / GT2 2001-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 35

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

99650425

The product you are viewing cross references to these numbers

Junction by-pass air cut-off valve.

Fits:
Porsche 996 Turbo / GT2 2001-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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

99611068173

The product you are viewing cross references to these numbers

O-ring - 58.05 x 3.55 - for intercooler hose (sold individually).

Fits:
Porsche 95B-1 Macan S Petrol 2014-18 (x2 Required)
Porsche 95B-1 Macan GTS 2014-18 (x2 Required)
Porsche 95B-1 Macan Turbo 2014-18 (x2 Required)

Porsche 955 Cayenne Turbo 2003-06 (x2 Required)

Porsche 958-1 Cayenne S Diesel V8 2013-14 (x2 Required)

Porsche 958-2 Cayenne S Diesel V8 2015-18 (x2 Required)
Porsche 958-2 Cayenne S V6 2015-18 (x2 Required)
Porsche 958-2 Cayenne GTS V6 2015-18 (x2 Required)

Porsche 996 Turbo / GT2 2001-05 (x6 Required)

Porsche 997 Turbo / GT2 2007-13 (x4 Required)

Diagram ref. 

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

95511072100

The product you are viewing cross references to these numbers

O-ring - 58.05 x 3.55 - for intercooler hose
OE Match intercooler pipe O-ring / round seal designed to provide a proper seal between intercooler pipes and fittings on Porsche turbocharged engines.
Sold individually

Fits:
Porsche 95B-1 Macan S Petrol 2014-18 (x2 Required)
Porsche 95B-1 Macan GTS 2014-18 (x2 Required)
Porsche 95B-1 Macan Turbo 2014-18 (x2 Required)

Porsche 955 Cayenne Turbo 2003-06 (x2 Required)

Porsche 958-1 Cayenne S Diesel V8 2013-14 (x2 Required)

Porsche 958-2 Cayenne S Diesel V8 2015-18 (x2 Required)
Porsche 958-2 Cayenne S V6 2015-18 (x2 Required)
Porsche 958-2 Cayenne GTS V6 2015-18 (x2 Required)

Porsche 996 Turbo / GT2 2001-05 (x6 Required)

Porsche 997 Turbo / GT2 2007-13 (x4 Required)

Diagram ref. 20.

The intercooler pipe O-ring sits between the mating surfaces of intercooler hoses, tubes, and connectors in the turbocharger charge air system. It prevents compressed air from leaking at these joints, ensuring that boost pressure flows efficiently from the turbocharger through the intercooler and into the engine. Maintaining a good seal here is essential for performance, responsiveness, and efficient engine operation under load.

Function
•  Seals intercooler hose connections: Prevents boost air leakage where pipes and connectors meet
•  Supports turbo efficiency: Helps maintain correct charge air pressure for optimal performance
•  Protects against pressure loss: Avoids reduced power and drivability issues from leaks
•  Durable elastomer: Designed to resist heat, pressure, and turbocharger system conditions

Intercooler pipe seals are small but critical to maintaining proper turbocharger performance. Over time, exposure to heat, pressure cycling, and engine bay contamination can cause original seals to:
•  Harden or become brittle
•  Distort or shrink
•  Leak compressed air at pipe joints
•  Reduce boost effectiveness

A leaking or degraded seal can result in loss of boost pressure, reduced engine power, slower acceleration, and poor throttle response. Replacing worn or damaged seals with quality OE Match units helps ensure a tight, leak-free joint and preserves the engineered performance of the turbocharger and intake system.

When to replace. Replace the intercooler pipe O-ring when:
•  You’re servicing intercooler hoses or charge air piping
•  You detect boost leaks (hissing during acceleration)
•  Engine performance feels reduced or inconsistent
•  Visual inspection shows the seal is brittle, cracked, or deformed
•  You’ve removed intercooler pipes and original seals were damaged

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

95511072100

The product you are viewing cross references to these numbers

Porsche 911 (996) GT2 Twin Turbos - Stage 1 - MD433 & MD434 [600-650 bhp]

MD433 & MD434 Stage 1 Twin Hybrid Turbos feature:
• Specially modified high flow compressor wheels fitted
• Compressor cover re-profiled to suit replacement compressor wheels
• Exhaust wheels lightened and modified to help reduce backpressure
• Turbochargers fully blueprinted to motorsport standards
• Twin piston ring seals fitted
• Estimated Power Output: 600-650bhp*

MD433 & MD434 Twin Hybrid Turbochargers fit:
Porsche 911 (996) GT2, engine code M96/70 S, year 2001 &, OEM number 99612398371
MD433 & MD434 turbos are a direct replacement for 5316-970-6726 & 5316-970-6727.

These Hybrid Turbos must be fitted as a pair.

*Please Note: Our hybrid turbochargers require exact engine management settings and/or supporting modifications to achieve these horsepower figures.

All Turbochargers are built to order and are usually despatched in 7 working days.

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

MD433MD434

The product you are viewing cross references to these numbers

Pressure Hose. 
The Genuine Porsche Pressure Hose is an original equipment turbocharger charge-air system component designed for selected Porsche 911 (996) Turbo and GT2 models manufactured between 2001 and 2005.

Fits:

• Porsche 996 TURBO 2000-05
• Porsche 996 GT2 2001-05  

Diagram Ref No 4

These pressure hoses form part of the engine's forced-induction system, providing flexible connections within the turbocharger and intercooler pipework. They help carry compressed intake air through the charge-air system while maintaining secure, pressure-resistant connections.

Available in separate left-hand and right-hand configurations, the hoses are specifically shaped to match the corresponding installation positions.

99611063174 – Left-Hand Pressure Hose

99611063075 – Right-Hand Pressure Hose

The Porsche 996 Turbo and GT2 use twin turbochargers to compress the intake air supplied to the engine. This compressed air passes through the charge-air cooling and intake system before entering the engine's cylinders.

Correctly sealed pressure hoses are essential for ensuring that the compressed air remains contained within the intended pipework. Any leakage can reduce the effective boost pressure reaching the engine and interfere with the performance of the turbocharging system.

Manufactured to Porsche's original equipment specifications, these hoses provide the intended fitment, flexibility and connection arrangement for the relevant charge-air components.

During operation, turbocharger pressure hoses are exposed to changing boost pressures, elevated temperatures, engine vibration and repeated expansion and contraction.

Over time, the original hoses may deteriorate due to ageing, heat exposure, oil vapour contamination or mechanical stress. Cracks, splits, loose connections or damaged hose ends can result in boost-pressure leaks.

A leaking pressure hose may cause reduced acceleration, inconsistent turbocharger response, hissing noises or engine management fault codes.

Replacing a damaged or deteriorated hose with a Genuine Porsche component helps restore the integrity of the charge-air system, maintain the intended boost-pressure delivery and support reliable turbocharged engine performance.

Ideal for boost leak repairs, turbocharger servicing, intercooler maintenance and Porsche 996 Turbo restoration projects, these Genuine Porsche Pressure Hoses provide factory-specified replacements for compatible vehicles.

What This Product Does:
The pressure hose is an essential component of the Porsche 996 Turbo and GT2 charge-air system.

Its primary function is to carry compressed intake air between the relevant turbocharging and intercooler components while maintaining a secure, airtight connection.

When the turbochargers compress incoming air, both its pressure and temperature increase.

The intercoolers help reduce the temperature of this compressed air before it reaches the engine intake system.

Flexible pressure hoses connect sections of the charge-air pipework, accommodating engine movement and vibration while maintaining the intended airflow passage.

Their main functions include:

• Transporting compressed intake air: Carries pressurised air through the applicable turbocharger and intercooler circuit.
• Maintaining boost pressure: Helps prevent compressed air from escaping through damaged connections.
• Supporting intercooler operation: Forms part of the pipework that directs charge air through the cooling system.
• Maintaining airtight connections: Provides a secure connection between the relevant charge-air components.
• Accommodating movement and vibration: Allows limited movement between connected components without compromising the air passage.
• Supporting turbocharger performance: Helps ensure compressed air reaches the downstream intake system as intended.
• Maintaining engine responsiveness: Supports consistent boost-pressure delivery during acceleration.
• Reducing unwanted air leakage: Helps prevent loss of charge air through the hose connection.
• Preserving correct airflow routing: Maintains the factory-specified left-hand or right-hand hose arrangement.
• Supporting engine management accuracy: Helps the boost-control system operate with the expected pressure conditions.

The pressure hose does not generate boost pressure. Boost is produced by the turbochargers and managed by the associated control system.

Symptoms Of Wear Or Failure:
Turbocharger pressure hoses operate in demanding conditions, with repeated exposure to heat, boost pressure, vibration and oil vapour.

Although designed for durability, ageing materials and weakened hose connections may eventually cause leakage or physical failure.

Common symptoms of a worn or damaged pressure hose include:

• Reduced engine power: Escaping compressed air may reduce the boost pressure available to the engine.
• Poor acceleration: The vehicle may feel less responsive, particularly under heavy throttle.
• Hissing noises under boost: A split hose or loose connection may produce a noticeable rushing-air sound.
• Whistling noises: Compressed air escaping through a small opening may create an unusual whistle.
• Inconsistent turbocharger response: Boost delivery may become irregular when the charge-air system cannot maintain pressure.
• Boost-pressure fault codes: The engine management system may detect a difference between requested and actual boost pressure.
• Engine warning light: Significant charge-air leaks may trigger an engine management warning.
• Cracked hose material: Ageing and repeated thermal cycling may cause visible cracks or splits.
• Swollen or softened hose sections: Heat and prolonged oil vapour exposure may affect the material's condition.
• Loose hose connections: Deteriorated hose ends or damaged clamps may prevent secure attachment.
• Hose slipping from a connection: Incorrect fastening or damaged hose ends may allow the hose to detach under pressure.
• Oil residue around hose joints: Oily deposits may collect around a leaking connection because charge air can contain oil vapour.
• Collapsed or distorted hose: Physical damage or weakened material may restrict the intended airflow passage.
• Abrasion damage: Contact with surrounding components may gradually wear through the hose surface.
• Repeated loss of boost pressure: Persistent charge-air leakage may prevent the engine from achieving its intended boost level.

Why Replacement Matters:
Replacing a deteriorated turbocharger pressure hose is important for maintaining reliable boost-pressure delivery and preserving the performance of the Porsche 996 Turbo or GT2.

A split or loose hose may allow compressed air to escape before it reaches the engine intake system, resulting in reduced performance and inconsistent turbocharger response.

The engine management system may attempt to compensate for abnormal pressure conditions, but replacing the damaged hose is necessary to restore the original sealed air passage.

A hose with significant deterioration may also detach from its connection during boost operation, causing a sudden loss of engine power.

Installing a Genuine Porsche replacement Pressure Hose helps to:

• Restore boost-pressure integrity: Replace leaking or damaged pipework to maintain compressed-air delivery.
• Improve acceleration: Address reduced performance caused by a confirmed boost leak.
• Maintain turbocharger response: Support consistent delivery of compressed intake air.
• Restore charge-air system sealing: Ensure the hose connections remain secure under normal operating conditions.
• Reduce boost-related warning messages: Address diagnostic faults caused by a confirmed pressure hose leak.
• Eliminate unwanted hissing: Repair air leakage caused by damaged hose material or connections.
• Prevent hose detachment: Replace weakened ends or damaged sections before they fail under pressure.
• Support intercooler efficiency: Maintain the intended air passage through the cooling system.
• Reduce unnecessary turbocharger loading: Help prevent operating conditions associated with compensating for charge-air leaks.
• Maintain original hose routing: Restore the correct left-hand or right-hand installation arrangement.
• Support turbocharger servicing: Provide replacement hoses during intercooler or charge-air system repairs.
• Preserve original Porsche specifications: Maintain the factory-designed pressure hose configuration.
• Support long-term reliability: Replace ageing components before more serious leakage develops.
• Maintain Genuine Porsche quality: Use original equipment components intended for the applicable vehicle.

Replacement is particularly recommended when inspection confirms cracking, swelling, splits, loose connections or loss of boost pressure through the hose.

When replacing one pressure hose, inspecting the corresponding hose on the opposite side is advisable because both components experience similar operating conditions.

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

99611063

The product you are viewing cross references to these numbers

Radiator Air Intercooler Bracket.

 

Fits:
Porsche 996 GT2, Turbo 2000-05

Click picture for large parts diagram.
Diagram Ref No 36.

Radiator water intercooler, Left.

Fits:
Porsche 996 GT2 2001-05

Click 'Zoom in' for large parts diagram.
Diagram Ref No 1.

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

99611098971

The product you are viewing cross references to these numbers

Radiator Intercooler, Right.
The OE Match Right Intercooler Radiator a high-quality replacement cooling component designed for turbocharged Porsche models. Positioned on the right-hand side of the vehicle, the intercooler is responsible for cooling the compressed intake air produced by the turbocharger before it enters the engine.

Fits:

Diagram Ref No 1

Manufactured to OE specifications for fit, performance and durability, this replacement intercooler helps reduce intake air temperatures, increase air density and improve combustion efficiency. By maintaining lower charge air temperatures, the intercooler contributes to consistent engine performance, improved power delivery and enhanced reliability under demanding driving conditions.  

What This Product Does:

• Cools compressed air from the turbocharger before it enters the engine.
• Reduces intake air temperatures to improve combustion efficiency.
• Increases air density for improved engine performance.
• Helps maintain consistent power output under load.
• Supports turbocharger efficiency and engine reliability.
• Reduces the effects of heat soak during spirited driving and high ambient temperatures.

Symptoms Of Wear Or Failure:

• Reduced engine performance or power output.
• Loss of turbo boost pressure.
• Increased intake air temperatures.
• Hissing noises caused by boost leaks.
• Oil residue around the intercooler core or pipe connections.
• Poor throttle response.Increased fuel consumption.
• Engine management warning lights related to boost pressure or intake air temperature.
• Visible damage to the intercooler core or end tanks.

Why Replacement Matters:

• Intercoolers are exposed to constant pressure fluctuations, road debris, moisture, corrosion and thermal cycling. Over time, the core can become damaged, develop leaks or suffer from internal contamination, reducing its ability to cool intake air effectively.
• A leaking or inefficient intercooler can cause loss of boost pressure, higher intake temperatures and reduced engine efficiency. This can negatively affect power output, fuel economy and overall drivability while increasing stress on the turbocharger and engine. In severe cases, significant boost leaks can trigger engine management faults and reduced performance modes.
• Replacing a worn or damaged intercooler helps restore correct boost pressure, improve charge air cooling and maintain optimum engine performance. An OE Match replacement provides factory-style fitment, reliable cooling efficiency and long-term durability, helping to protect the performance and reliability of your Porsche turbocharged engine.

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

99611099071

The product you are viewing cross references to these numbers

Yellow springs - 1 Bar = 9 - 15Psi
Blue springs - 1.2 Bar = 14 - 18Psi
Red springs - 1.4 Bar = 17.5 - 20Psi

Please note you would need to buy a pair as they are sold as EACH

The Replacement Actuators Part No. 99612300010 are assembled with Green springs - Standard Psi suitable for at or slightly above factory boost levels.

Additional springs are required for tuning to custom boost levels.

Fit:
Porsche 996 Turbo
Porsche 996 GT2
Porsche 993 Turbo

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

FMAS049

The product you are viewing cross references to these numbers

Turbo charger actuator.

Fits:
Porsche 996 Turbo / 996 GT2 2001-05

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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

99612311

The product you are viewing cross references to these numbers