Turbo Chargers / Intercoolers & Parts

APPLICATIONS:- Porsche 993 GT2 - 3.6 Twin Turbo 1994-97

All units listed directly replace the standard KKK K24 Turbochargers,

Part No. 5324-970-7003 - Porsche Part No. 99312301482. R/H
Part No. 5324-970-7004 - Porsche Part No. 99312301382. L/H

STAGE 1 UPGRADE

These turbos are a direct installation in replacement of your factory turbos. K24 turbos are much larger then the factory K16 turbos found on the standard 993 GT2. The K24 Turbos can handle over 550 crank horsepower. Unlike most turbos on other vehicles, you will not sacrifice low end horsepower or torque, however gain a larger amount in the mid range and top end.

High flow Spec 5 blade compressor wheel - CNC re-profiled compressor housing - 360 degree thrust bearing - left & right hand thread shaft & wheel with cut back blades- twin high temperature exhaust piston ring seals fitted.

The prices listed are for turbo chargers supplied on an exchange basis. Your Turbo charger must be a serviceable unit. If required on an out right purchase (if you have no old unit available), please ask for quotation.

Output achieved 630 BHP & 890Nm Torque @ 4,500 Rpm & 1.1Bar Boost with the correct ECU re-map These set should only be fitted by engine builders or tuners as other performance parts may be required

Exhaust sealing ring turbo to catalytic converter. 
Price is for each



Fits:
Porsche 993 turbo - 1994 to 1997

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

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96511120500

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Heat shield for turbocharger.



Fits:
Porsche 993 Turbo 1994-98

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

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99312311

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IWG75 Porsche 993 (911) Turbo Black 24PSI



The Porsche 993 Turbo 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 993 (911) Turbo Black 7PSI



The Porsche 993 Turbo 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.

Intake Manifold Pipe - Left.



Fits:
Porsche 993 Turbo 1994-98

Click picture for large parts diagram.
Diagram ref no 18.

Intercooler temperature sensor



Fits:
Porsche 993 Turbo 1995-98

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

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Intercooler temperature sensor.



Fits:
Porsche 993 Turbo 1995-98

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

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Intercooler Temperature Sensor.

The BOSCH Intercooler Temperature Sensor is a premium OEM-quality engine management sensor manufactured by Bosch, designed to monitor the temperature of the compressed air exiting the intercooler and entering the engine. By continuously measuring charge air temperature, the sensor provides critical data to the engine control unit (ECU), allowing precise adjustments to fuel injection, ignition timing, and turbocharger management.

Fits:

• Porsche 993 (911) TURBO 1994-96

Diagram Ref No 12

In turbocharged Porsche engines, maintaining accurate charge air temperature readings is essential for performance, efficiency, and engine protection. Manufactured to Bosch’s stringent OEM standards, this sensor delivers precise temperature measurement, reliable signal transmission, and long-lasting durability in high-temperature, high-pressure intake environments.

What This Product Does:

• Measures the temperature of air leaving the intercooler
• Sends real-time charge air temperature data to the ECU
• Helps optimise fuel injection and ignition timing calculations
• Supports turbocharger and boost management strategies
• Protects the engine from excessive intake air temperatures
• Contributes to improved performance, efficiency, and emissions control

Symptoms Of Wear Or Failure:

• Check engine light illumination
• Reduced engine power or limp-home mode activation
• Poor throttle response Increased fuel consumption
• Engine hesitation during acceleration
• Incorrect boost or turbocharger performance
• Rough running or inconsistent engine operation
• Charge air temperature sensor-related fault codes stored in the ECU

Why Replacement Matters:

• Restores accurate charge air temperature monitoring
• Ensures correct fuel and ignition management calculations
• Optimises turbocharger performance and boost control
• Improves engine efficiency and throttle response
• Helps maintain emissions compliance
• Protects the engine from high intake temperature-related stress
• Reduces the risk of ECU faults and reduced-power operation
• Maintains reliable communication between the intake system and engine management system

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Oil return line set turbocharger. 
Sold as a pair

Fits:
Porsche 993 turbo - 1994 to 1997

Porsche 993 Turbo - oil pump to tank

Optimised shape to prevent backflow to the turbocharger oil tank. Manufactured in high quality stainless steel pipe, these oil lines prevent oil from flowing back to the turbocharger, which leads to excessive oil burning and smoking after long idle time

Diagram ref no 20 and 21

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99310733KIT

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Porsche 911 (993) GT2 Twin Turbos - Stage 2 - MD547 & MD548 [650-700 bhp]

MD547 & MD548 Stage 2 Twin Hybrid Turbos feature:
• Specially modified Garrett 56 trim compressor wheels fitted
• Compressor cover re-profiled to suit replacement compressor wheels
• Exhaust wheels lightened and modified to help reduce backpressure
• Turbochargers fully blueprinted including twin piston ring seals fitted
• Estimated Power Output: 650-700bhp*

MD547 & MD548 Twin Hybrid Turbochargers fit:
Porsche 911 GT2, engine code M64/60 S, year 1995 & 1999, OEM number 99312301385
MD547 & MD548 turbos are a direct replacement for Porsche 911 Turbo, engine code M64/60, year 1995 & 1998, part number 5316-988-6736, OEM number 99312301352 as a performace upgrade.
MD547 & MD548 Hybrid turbos are a direct replacement for 5324-970-7003 & 5324-988-7003 turbo.

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.

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MD547MD548

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The DesignTek Stage 1 turbocharger upgrade service converts customer-supplied Porsche 993 911 GT2 turbochargers to MD422 & MD423 hybrid specification. No complete replacement turbochargers are included.

How the Service Works

Submit your existing turbochargers for modification. Alternatively, obtain new units independently and arrange their conversion as a separate service; purchasing turbochargers does not include upgrade work.

Fits

• Porsche 993 911 GT2 — application specified for this upgrade service.
• 993 (911) (1994–1998)
• 993 (911) TURBO 1994–96
• 993 (911) TURBO S 1994–97
• Porsche 911 Turbo (993) originally fitted with 5316-970-6736 and 5316-970-6735 turbos.
• Porsche 911 Turbo, engine code M64/60, year &, OEM number 99312301452

Turbo and Turbo S entries describe retained applications, not universal donor-unit suitability for this GT2 conversion. Confirm compatibility of both submitted turbochargers. The M64/60 entry provides no valid application year.

Diagram: 202-16, item 1

What This Product Does

This is a modification service applied to turbochargers supplied by the customer. The specified conversion is MD422 & MD423; it is neither an outright turbocharger pair nor an engine overhaul kit.

Functions

• Converts submitted turbochargers to Stage 1 hybrid specification.
• Accepts existing units or independently purchased new turbochargers, subject to compatibility checks.

Technical Details

• Service specification: Stage 1 hybrid conversion, MD422 & MD423.
• Historical designations MD435 & MD436 are retained for identification only and do not specify this conversion.
• Recorded turbocharger references: 5316-970-6736, 5316-970-6735 and 5316-988-6736.
• Recorded engine code: M64/60.
• Internal assembly information identifies turbocharger 99312301452, note /R.
• Historical output designation: 550-600 bhp. No verified output is established for this GT2 service.

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.

The retained horsepower note does not establish an output guarantee for this conversion.

Symptoms of Fault

Investigate unusual whining, exhaust smoke, increased oil consumption, delayed boost delivery or oil leakage before submitting units. These symptoms alone do not establish that turbocharger modification is appropriate.

Why Replacement Matters

An upgrade cannot correct an unresolved mechanical defect. Assess engine condition, oil supply, boost pipework and seals first, and review the engine-management requirements alongside any supporting modifications.

FAQs

Are complete turbochargers included?
No. You supply the units that undergo conversion.

Can newly purchased units be submitted?
Yes, subject to compatibility. Obtain them independently and arrange modification separately.

Which specification is requested?
MD422 & MD423. The historical MD435 & MD436 designations do not define this service.

Before ordering, confirm suitability against your vehicle's model, production year and engine specification.

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TTE650 upgrade turbocharger for Porsche 993 / 996

Product Highlights:

• Original BWTS turbocharger as base part
• Early response
• BWTS cast compressor 6+6 BLADE
• BWTS High-Flow clipped turbine
• BWTS Upgrade bearing pack
• Plug and Play installation
• 650 PS Capable
• Proven TheTurboEngineers quality
• Single parts finely balanced then components assembled and core high-speed VSR balanced
• Supplied with a balance test result document
• Made in Germany

TTE800 upgrade turbocharger for Porsche 993 / 996

Introducing our TTE800 upgrade performance turbochargers based on the original K24 turbochargers to new higher output specification. Offering an upgrade to over 800PS.

Engineered & Enhanced

At the core of our TTE800 upgrade stage is a much larger TTE compressor wheel, chosen because it is highly efficient and creates an extremely high flow for comparative size. Re-Profiled compressor cover to optimised tolerance to ensure maximum compressor efficiency is given.


We CNC mill the exhaust turbine housing to accept a larger 9 blade turbine and shaft.

Special profile 360 deg high-performance motorsport journal bearing is fitted, to remain durable at higher loads with no loss in transient response. The actuator used is sprung OE unit set at 0.8bar crack pressure(1.0bar if wanted)

Equilibrium:

Precisely balancing our turbochargers is a key critical factor to become a TTE upgrade unit as longevity and performance are paramount. Good balance improves acoustics also. Subsequent great care is taken with all TTE turbochargers to achieving our balance standards. Firstly parts are balanced at slow speeds up to 2800RPM in multiple planes using our single parts machine, then components are assembled and then the CHRA are dynamically balanced, but this time depending on application at up to 250,000 RPM in multiple planes using our in-house VSR machine to acquire the ultimate equilibrium, to a standard far higher than OEM. Each turbocharger is supplied with a serial numbered balance test result document.

• Original BorgWarner turbocharger as the base part
• TTE Billet geometry compressor 54.5MM inlet
• TTE 9 Blade High-Flow Low-Mass turbine
• TTE Upgrade bearing pack
• 800PS+ Capable on 102Ron
• Single parts finely balanced then components assembled and core high-speed VSR balanced
• Supplied with a balance test result document
• Proven TheTurboEngineers quality
• Made in Germany

These pair of replacement actuators, for the Porsche 993 Turbo , utilise the latest design to eradicate the failures often associated with the original actuators and are supplied complete with brackets ready to install. This product is assembled with springs suitable for at or slightly above factory boost levels.



This item comes with stock springs 5 psi (spool up) - 10 psi (running pressure) Green Springs product code FMAS049G. Additional springs are required for tuning to custom boost levels.

Fits:
Porsche 993 Turbo

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FMAC993

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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

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FMAS049

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