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Turbo Chargers / Intercoolers & Parts

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DISPLAYING 17 to 19 (of 19 products)
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9A212303
Product Information
Product Information
Standard replacement turbocharger
The 991.2 Carrera S uses Porsche's turbocharged 3.0-litre flat-six engine with two turbochargers, one dedicated to each cylinder bank. Correct turbocharger specification is essential for maintaining the engine's intended boost response, power delivery and drivability.
The turbochargers are sold individually, allowing you to replace only the affected side when required.

BorgWarner ref no 53039880740
BorgWarner ref no 53039880741

Fits:
Porsche 991.2 Carrera S / Carrera 4S / Targa 4S 3.0L  2017 – 2019
 * engine code: DCH, DCHA
 * WITHOUT (X51) Powerkit /  WITHOUT (147) Carrera Power kit

Important Fitment Information:
These turbochargers are designed for the 420 PS Carrera S-specification 3.0L engine. They should not be confused with the smaller turbochargers fitted to the standard Carrera / Carrera 4 / Targa 4 models. They are also not the same turbocharger specification as that used on the higher-output 991.2 GTS.

BorgWarner Turbocharger Technology
BorgWarner is one of the world's leading manufacturers of turbocharging systems for passenger and performance vehicles.

The K03 turbochargers used on the Porsche 991.2 Carrera S are engineered to provide a balance of fast response, efficient airflow and the boost capacity required by Porsche's 420 PS 3.0L flat-six engine.

A correctly operating turbocharger is essential to maintaining:
•  Correct boost pressure
•  Strong acceleration
•  Responsive throttle behaviour
•  Consistent engine power
•  Efficient airflow
•  Correct engine management operation
•  Fuel efficiency
•  Exhaust emissions performance

Using the correct BorgWarner replacement unit allows the vehicle to retain the turbocharger specification intended for the standard Porsche ECU calibration.

Signs of a Worn or Failing Turbocharger
Turbochargers operate under extremely demanding conditions, including very high rotational speeds, exhaust temperatures and lubrication requirements.

Possible symptoms of turbocharger wear or failure include:
•   Reduced engine power
•   Loss of boost pressure
•   Slow or inconsistent boost response
•   Whining or unusual turbocharger noise
•   Excessive exhaust smoke
•   Increased oil consumption
•   Oil leakage around the turbocharger
•   Boost-pressure fault codes
•   Check-engine warning
•   Excessive shaft play
•   Poor acceleration

These symptoms are not always caused by the turbocharger itself. Correct diagnosis should be carried out before replacement.

Diagnose the Cause Before Replacement
Turbocharger failure can sometimes be caused by another engine or intake-system fault.
Before installing a new turbocharger, inspect:
•   Engine oil condition
•   Turbocharger oil supply lines
•   Turbocharger oil return lines
•   Engine oil pressure
•   Intake pipework
•   Air filter
•   Charge-air hoses
•   Intercoolers
•   Exhaust system
•   Electronic wastegate actuator system
•   Boost-pressure control system
•   Crankcase ventilation system
•   Foreign-object damage

Failure to correct the original cause can result in premature damage to the replacement turbocharger.

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

9A212303
53039880740
53039880741
9A212303101
9A212303102
9A212303103
9A212303104
9A212303105
9A212303106
9A212303201
9A212303202
9A212303203
9A212303204
9A212303205
9A212303206

The product you are viewing cross references to these numbers
9A212303
Product Information
Product Information
Standard replacement turbocharger.
BorgWarner ref no 53049880298 /  53049880299
Fits:
Porsche 911 (991.2) Carrera S Power Kit 2016-2019
Porsche 911 (991.2) Carrera GTS 2016-2019 (X51) Powerkit 331/340kW
REPLACEMENT
These turbos are a direct installation in replacement of your factory turbos.
Previous part OE numbers:
9A212303155, 9A212303154, 9A212303152 
9A212303255, 9A212303254, 9A212303252
Diagram ref no 25

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

9A212303
18559980070
9A212303155
9A212303154
9A212303254
9A212303252
9A212303152
9A212303255

The product you are viewing cross references to these numbers
Special Order item
9A212303
Product Information
Product Information
Standard replacement turbocharger.
Fits:
Porsche 911 (991.2) Carrera S Power Kit 2016-2019
Porsche 911 (991.2) Carrera GTS 2016-2019 (X51) Powerkit 331/340kW
Previous part OE numbers:
9A212303155, 9A212303154, 9A212303153, 9A212303152, 9A212303151
9A212303255, 9A212303254, 9A212303253, 9A212303252, 9A212303251
Click 'Zoom in' for large parts diagram.
Diagram ref no 24 (LEFT) or 25 (RIGHT)

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

9A212303
9A212303255
9A212303254
9A212303253
9A212303252
9A212303251
9A212303155
9A212303154
9A212303153
9A212303152
9A212303151

The product you are viewing cross references to these numbers
DISPLAYING 17 to 19 (of 19 products)
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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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