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Turbo Chargers / Intercoolers & Parts

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DISPLAYING 1 to 16 (of 25 products)
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99312301
Product Information
Product Information
All units listed directly replace the standard KKK K16 Turbochargers,

Part No. 5316-970-6735 – Porsche Part No. 99312301351. R/H
Part No. 5316-970-6736 – Porsche Part No. 99312301451. L/H

STAGE 1 UPGRADE

High flow GT series 6 blade compressor wheel - CNC re-profiled compressor housing - 360 degree thrust bearing – left & right hand thread shaft & wheel, twin high temperature exhaust piston ring seals fitted.

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 993TT. 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.

Approx achievable output - 550-600 bhp with the correct ECU re-map
These set should only be fitted by engine builders or tuners as other performance parts may be required

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.
99312301
Product Information
Product Information
All units listed directly replace the standard KKK K16 Turbochargers,

Part No. 5316-970-6735 - Porsche Part No. 99312301351. R/H
Part No. 5316-970-6736 - Porsche Part No. 99312301451. L/H

STAGE 2 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 993TT. 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

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.
96511120500/1
Product Information
Product Information
Exhaust sealing ring turbo to catalytic converter. 
Price is for each

oematch

Fits:
Porsche 993 turbo - 1994 to 1997

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



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Related, superseded, cross reference or alternative numbers for comparison.

96511120500
96411120500
96511120500

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Special Order item
99312311
Product Information
Product Information
Heat shield for turbocharger.

porsche

Fits:
Porsche 993 Turbo 1994-98


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



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99312311
99312311351
99312311451

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TS-0624-1242
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Product Information
IWG75 Porsche 993 (911) Turbo Black 24PSI

turbosmart

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.
TS-0624-1072
Product Information
Product Information
IWG75 Porsche 993 (911) Turbo Black 7PSI

turbosmart

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.
Special Order item
99311063154
Product Information
Product Information
Intake Manifold Pipe - Left.

porsche

Fits:
Porsche 993 Turbo 1994-98

Click picture for large parts diagram.
Diagram ref no 18.
Special Order item
99360611400
Product Information
Product Information
Intercooler temperature sensor

porsche

Fits:
Porsche 993 Turbo 1995-98

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

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99360611400
99360611400
6PT009109181

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99360611400/1
Product Information
Product Information
Intercooler temperature sensor.

oematch

Fits:
Porsche 993 Turbo 1995-98

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

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

99360611400
99360611400
6PT 009 109-181
6PT009109181

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99310733KIT
Product Information
Product Information
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
99310733853
99310733953
99310733981

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MD422MD423
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Porsche 911 (993) Twin Turbos - Stage 1 - MD422 & MD423 [550-600 bhp]

MD422 & MD423 Stage 1 Twin Hybrid Turbos feature:
• Specially modified high flow GT Series 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: 550-600bhp*


MD422 & MD423 Twin Hybrid Turbochargers fit:
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
MD422 & MD423 turbos are a direct replacement for 5316-970-6736 & 5316-988-6736.

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.

MD422MD423
99312301452
5316-970-6736
5316-970-6735

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MD427MD428
Product Information
Product Information
Porsche 911 (993) Twin Turbos - Stage 2 - MD427 & MD428 [630 bhp]

MD427 & MD428 Stage 2 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
Actual Power Achieved: 630 bhp*

MD427 & MD428 Twin Hybrid Turbochargers fit:
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 99312301352
MD427 & MD478 turbos are a direct replacement for 5316-970-6736 & 5316-988-6736.

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.

MD427MD428
5316-970-6736
5316-970-6735
99312301352

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99311063
Product Information
Product Information
Pressure Hose Intercooler. 

oematch

Fits:
Porsche 993 Turbo 1994-98

Left or right.
Please select below.

Click 'Zoom in' for large parts diagram.
Diagram ref no 19



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99311063
99311063356
99311063256

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TTE10063
Product Information
Product Information
tte

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
TTE10065
Product Information
Product Information
tte

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
FMAC993
Product Information
Product Information
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.

forge

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

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

FMAC993
99312311550
99312311551

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DISPLAYING 1 to 16 (of 25 products)
1 2
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About Turbo Chargers / Intercoolers & Parts

Turbochargers, Intercoolers & Parts – Precision-Engineered Performance for Porsche Engines

A turbocharger increases your Porsche’s power and efficiency by forcing more air into the engine’s combustion chamber, while the intercooler cools that compressed air to improve performance and reliability. Together, these components deliver the exhilarating acceleration and responsiveness that define Porsche engineering.

At Design911, we offer a comprehensive selection of turbochargers, intercoolers, and related components for Porsche models old and new. Manufactured using high-grade materials and advanced balancing technology, our range ensures consistent boost pressure, superior cooling efficiency, and long-term durability under extreme conditions.

Whether you’re restoring a classic 911 Turbo, upgrading a Cayman for track use, or replacing worn components on a modern model, our high-quality turbo and intercooler parts guarantee unmatched performance and reliability.

What Do Turbochargers & Intercoolers Do?

Turbochargers and intercoolers work together to enhance engine power, efficiency, and response.

Core Functions:

  • Turbocharger: Compresses intake air to increase the engine’s air/fuel ratio, producing greater power.
  • Intercooler: Reduces the temperature of compressed air before it enters the engine, improving combustion and preventing knock.
  • Associated Parts: Turbo hoses, valves, clamps, and cooling lines maintain consistent boost pressure and reliable airflow.

Together, these systems optimise power delivery, throttle response, and engine longevity — key to achieving Porsche’s hallmark driving experience.

Why Do Turbochargers & Intercoolers Fail?

Turbo and intercooler systems operate under extreme temperatures and pressure. Over time, wear and heat cycling can cause performance degradation or failure.

Common Causes of Failure Include:

  • Oil contamination or starvation damaging the turbo bearings.
  • Boost leaks from worn seals, cracked hoses, or gaskets.
  • Intercooler clogging due to debris or oil residue.
  • Excessive exhaust temperatures leading to turbine damage.
  • Corrosion or heat fatigue from prolonged high-speed driving.

Symptoms of failure include whining noises, loss of power, blue or black exhaust smoke, poor boost response, or oil leaks around the turbo system. Addressing these early can prevent costly repairs and maintain performance.

Why Replace Components?

Replacing a worn turbocharger or intercooler with a precision-engineered, high-performance alternative restores full boost pressure, temperature control, and efficiency — ensuring your Porsche performs as intended.

Key Benefits:

  • Restores boost pressure and throttle response.
  • Improves air cooling and power delivery.
  • Prevents oil and boost leaks.
  • Constructed from lightweight, heat-resistant materials.
  • Direct-fit compatibility for Porsche 911, Cayman, Boxster, Macan, Panamera and more.
  • Ideal for performance upgrades, maintenance, or rebuilds.

High-quality turbo and intercooler components are essential for reliable, sustained performance in both road and track environments.

Highlights:

  • Turbochargers, intercoolers & related parts for Porsche models.
  • Precision-engineered to enhance airflow, boost, and cooling.
  • Heat-resistant construction ensures durability and performance.
  • Perfect for maintenance, upgrades, or complete rebuilds.
  • Supports Porsche 911, Cayman, Boxster, Panamera and more.
  • Optimised for performance and reliability under extreme load.

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