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Flywheel / Torque

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DISPLAYING 1 to 12 (of 12 products)
90110299241
Product Information
Product Information
Speedi Sleeve for Flywheel End Sealing Surface.

original

Fits: Crankshaft Flywheel Hub End

Fits:
Porsche 356 1950-65
Porsche 912 1965-69

Speedi Sleeves to Repair Worn, Grooved Seal Surfaces

Over time, sealing surfaces will become grooved, making a good seal impossible.The most economical and fastest method of shaft repair is to install the CR Speedi Sleeve. Speedi Sleeve is a precision engineered piece of stainless steel. It's ultra-thin wall design allows it to be used without changing the sel size ans its finish is perfect for lip sealing applications. Speedi Sleeve is built with removable installation flange. The installation tool included in every box allows the seal to be put in. This avoids the possibility of distortion from heat or other installation methods
Special Order item
90010900400
Product Information
Product Information
Dowel Pin For Flywheel. Sold as EACH. 8 required per engine.

porsche

Fits:
Porsche 912
Porsche 356

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

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90010900400
90010900400

The product you are viewing cross references to these numbers
Special Order item
50202301
Product Information
Product Information
Flywheel Gasket.

Fits:
Porsche 356 (not for CARRERA)
Porsche 912 1965-69

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Related, superseded, cross reference or alternative numbers for comparison.

50202301
50202301

The product you are viewing cross references to these numbers
61610202501/1
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Product Information
Flywheel HD gland nut. Thread count 1.5mm
Machined from 4140 steel and tested to 700 lb-ft of torque (Porsche factory recommended torque is 400-450 lb-ft). 
Note: Each time the gland nut is removed, it must be replaced with a new one.

Fits:
Porsche 356 all
Porsche 912 all

Diagram ref no 7

This OE Match flywheel gland nut is produced to OE-equivalent standards, replicating the original Porsche part’s dimensions, materials, and performance characteristics. Made from high-strength steel with suitable surface treatment, it delivers the necessary tensile strength and thread integrity required in high-stress crankshaft/flywheel applications.

The gland nut plays a critical role in securing the engine flywheel, which transmits engine torque to the clutch and drivetrain. A properly torqued gland nut prevents loosening, shearing, or axial creep under varying engine speeds and loads. Over time, original nuts can become fatigued, corroded, or damaged - especially after flywheel removal during clutch or engine service. Replacing worn or suspect hardware with this OE Match gland nut restores correct flywheel retention, improves service reliability, and ensures that the flywheel remains securely seated on the crankshaft flange.

This part installs directly with the original flywheel and crankshaft threads, making it ideal for clutch jobs, engine rebuilds, or preventative drivetrain maintenance.

The flywheel gland nut clamps and secures the engine flywheel to the crankshaft flange, ensuring a secure interface that transmits engine torque through the clutch assembly to the transmission. It withstands rotational and vibrational loads, preventing movement that could lead to driveline issues.

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61610202501
61610202501

The product you are viewing cross references to these numbers
36902107
Product Information
Product Information
Flywheel Spacer.

Use only one flywheel spacer to achieve proper crankshaft end play

Fits:
Porsche 356 (not for Super 90)
Porsche 912 1965-69

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

36902107
369021071
369021072
369021073
369021074
369021075
369021076
NLA02107
NLA02108

The product you are viewing cross references to these numbers
50210211601/1
Product Information
Product Information
Flywheel.
Size: 180mm

Fits:
Porsche 356 / 356A / 356B

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50210211601
50210211601
313 09 319

The product you are viewing cross references to these numbers
61610220104/1
Product Information
Product Information
Flywheel for Porsche 356B 1600 C / SC 1960-63
Size: 200mm

Fits:
Porsche 356B 1600 C / SC
Porsche 356C

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

61610220104
61610220103
61610220104
313 09 344

The product you are viewing cross references to these numbers
61610220102/1
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Product Information
Flywheel Porsche 356B SUPER 90 1960-63
Size: 200mm

Fits:
Porsche 356B SUPER 90 1960-63

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61610220102
31309343
NLA10220102
61610220102

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008200F12VW
Product Information
Product Information

Lightweight Flywheel Conversion, 200mm For 12V Starter Motor.
Upgrade your Porsche drivetrain with this OE Match Lightweight Flywheel Conversion, 200mm for 12V Starter Motor. Produced to OE-style specifications, this lightweight flywheel conversion is engineered for vehicles using a 12-volt starter motor, providing the correct fitment while significantly reducing rotational mass for improved engine responsiveness. Manufactured from high-quality forged steel and precision balanced for smooth operation, it delivers exceptional strength, excellent resistance to heat and fatigue, and long-lasting durability. It is an ideal solution for performance builds, engine upgrades, clutch replacements, and restoration projects where improved drivability and faster engine response are desired.

Fits:

  • Porsche 356 1950-55
  • Porsche 356A 1955-59
  • Porsche 356B 1959-63
  • Porsche 356C 1963-65  

The lightweight flywheel is a critical component within the engine and transmission assembly, storing rotational energy while providing the friction surface for the clutch. Compared to a standard flywheel, the lightweight design reduces rotational inertia, allowing the engine to rev more freely, accelerate faster, and deliver sharper throttle response. The integrated conversion is specifically designed for compatibility with 12V starter motor applications, ensuring correct starter engagement and reliable operation. Over time, flywheels can become heat damaged, warped, cracked, or scored through repeated clutch use, leading to poor clutch engagement and driveline vibration. Replacing the flywheel restores dependable clutch operation while delivering the performance benefits of reduced rotating mass.  

What This Product Does:
  • Reduces rotating mass for improved engine responsiveness.
  • Provides the friction surface for the clutch assembly.
  • Improves throttle response and engine acceleration.
  • Supports smooth clutch engagement and disengagement.
  • Converts compatible applications for use with a 12V starter motor.
  • Replaces worn, cracked, or heat-damaged flywheels.
  • Provides an OE-style fit for straightforward installation.

Symptoms Of Wear Or Failure:
  • Clutch judder during engagement.
  • Excessive drivetrain vibration.
  • Heat spots or scoring on the flywheel surface.
  • Cracked or warped flywheel.
  • Difficulty achieving smooth clutch engagement.
  • Premature clutch wear or persistent clutch slippage.
  • Starter engagement issues caused by damaged ring gear.
  • Damage identified during clutch replacement or engine overhaul.

Why Replacement Matters:
  • The flywheel is fundamental to transmitting engine power to the transmission while providing the precision-machined surface required for proper clutch operation. A worn or damaged flywheel can cause clutch vibration, inconsistent engagement, accelerated clutch wear, and starter motor issues. A lightweight flywheel conversion not only restores reliable operation but also reduces rotational inertia, allowing the engine to rev more quickly and deliver noticeably sharper throttle response. The dedicated 12V starter motor compatibility ensures proper starter engagement and dependable starting performance.
  • Replacing a worn flywheel with this OE Match Lightweight Flywheel Conversion restores smooth clutch operation, enhances engine performance, and improves overall driving enjoyment. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Lightweight Flywheel Conversion, 200mm for 12V Starter Motor provides reliable fit, exceptional strength, and long-lasting durability for Porsche maintenance, performance upgrades, repairs, and restoration projects.



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

008200F12VW
008 200F12VW
008200F12VW

The product you are viewing cross references to these numbers
008200FW
Product Information
Product Information
Lightweight Flywheel, 200 mm.
Improve engine response and reduce rotational inertia with this OE Match Lightweight Flywheel, 200mm. Produced to OE-style specifications, this precision-engineered lightweight flywheel is designed to provide the correct mounting dimensions and clutch interface for compatible Porsche models while reducing rotating mass for enhanced engine performance. Manufactured from high-quality forged steel and precision balanced for smooth operation, it offers exceptional strength, excellent resistance to heat and fatigue, and long-lasting durability, making it ideal for performance applications, engine rebuilds, maintenance, and restoration projects.

Fits:
  • Porsche 356 1950-55
  • Porsche 356A 1955-59
  • Porsche 356B 1959-63
  • Porsche 356C 1963-65  

The flywheel is an essential component of the engine and transmission assembly, storing rotational energy while providing the friction surface for the clutch. By reducing flywheel mass, a lightweight design allows the engine to accelerate and decelerate more rapidly, improving throttle response and creating a more engaging driving experience. Over time, repeated clutch engagement, high temperatures, and normal wear can cause the flywheel surface to become scored, warped, heat-spotted, or cracked, leading to clutch judder, vibration, and inconsistent engagement. Replacing a worn flywheel restores reliable clutch operation while delivering the performance advantages of reduced rotational mass.  

What This Product Does:
  • Stores rotational energy while reducing rotating mass.
  • Provides the friction surface for the clutch assembly.
  • Improves throttle response and engine acceleration.
  • Supports smooth clutch engagement and disengagement.
  • Reduces drivetrain inertia for faster engine response.
  • Replaces worn, cracked, or heat-damaged flywheels.
  • Provides an OE-style fit for straightforward installation.

Symptoms Of Wear Or Failure:
  • Clutch judder during take-off.
  • Excessive drivetrain vibration.
  • Heat spots or scoring on the flywheel surface.
  • Cracks or distortion caused by overheating.
  • Difficulty achieving smooth clutch engagement.
  • Premature clutch wear or persistent clutch slippage.
  • Damage identified during clutch replacement or engine overhaul.

Why Replacement Matters:

  • The flywheel is fundamental to transmitting engine power to the gearbox while providing the precision-machined surface required for efficient clutch operation. A worn or damaged flywheel can cause vibration, inconsistent clutch engagement, premature wear of clutch components, and reduced drivetrain performance. A lightweight flywheel also improves engine responsiveness by reducing rotational inertia, allowing quicker acceleration and more immediate throttle response.
  • Replacing a worn flywheel with this lightweight OE Match component restores dependable clutch performance while enhancing engine response and overall driving enjoyment. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Lightweight Flywheel, 200mm provides reliable fit, exceptional strength, and long-lasting performance for Porsche maintenance, performance upgrades, repairs, and restoration projects.



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

008200FW
008 200FW
008200FW

The product you are viewing cross references to these numbers
008200FVW
Product Information
Product Information
Lightweight Flywheel, 200 mm. 
Improve engine responsiveness and enhance driving performance with this OE Match Lightweight Flywheel, 200mm. Produced to OE-style specifications, this precision-engineered lightweight flywheel is designed to provide the correct mounting dimensions and clutch interface for compatible Porsche models while significantly reducing rotational mass. Manufactured from high-quality forged steel and precision balanced for smooth operation, it delivers exceptional strength, excellent resistance to heat and fatigue, and long service life, making it ideal for performance applications, engine rebuilds, maintenance, and restoration projects.

Fits:
  • Porsche 356 1950-55
  • Porsche 356A 1955-59
  • Porsche 356B 1959-63
  • Porsche 356C 1963-65  

The flywheel is a critical component of the engine and transmission assembly, storing rotational energy while providing the friction surface for the clutch. A lightweight flywheel reduces rotational inertia, allowing the engine to rev more freely and respond more quickly to throttle inputs, resulting in sharper acceleration and improved gear changes. Over time, repeated clutch engagement, thermal cycling, and high operating loads can cause the flywheel surface to become scored, warped, heat-spotted, or cracked, reducing clutch performance and drivability. Replacing a worn flywheel restores reliable clutch operation while delivering the performance benefits of a lightweight design.  

What This Product Does:
  • Stores rotational energy while reducing rotating mass.
  • Provides the friction surface for the clutch assembly.
  • Improves throttle response and engine acceleration.
  • Supports smooth clutch engagement and disengagement.
  • Reduces drivetrain inertia for quicker engine response.
  • Replaces worn, cracked, or heat-damaged flywheels.
  • Provides an OE-style fit for straightforward installation.

Symptoms Of Wear Or Failure:
  • Clutch judder during engagement.
  • Excessive drivetrain vibration.
  • Heat spots or scoring on the flywheel surface.
  • Warped or cracked flywheel caused by overheating.
  • Difficulty achieving smooth clutch engagement.
  • Premature clutch wear or persistent clutch slippage.
  • Damage identified during clutch replacement or engine overhaul.

Why Replacement Matters:

  • The flywheel provides the connection between the engine and transmission while supplying the precision-machined friction surface required for proper clutch operation. A worn or damaged flywheel can lead to vibration, clutch judder, inconsistent engagement, and accelerated wear of new clutch components. A lightweight flywheel further improves engine response by reducing rotational inertia, making it particularly well suited to spirited road driving and performance-focused applications.
  • Replacing a worn flywheel with this lightweight OE Match component restores dependable clutch performance while improving throttle response, engine flexibility, and overall driving enjoyment. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Lightweight Flywheel, 200mm provides reliable fit, strength, and long-lasting performance for Porsche maintenance, performance upgrades, repairs, and restoration projects.



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

008200FVW
008 200FVW
008200FVW

The product you are viewing cross references to these numbers
53902103/1
Product Information
Product Information
Lock washer for bolting the flywheel to the crankshaft.


Fits:
Porsche 356 (1950 to 1965)
Porsche 911 and 912 (1965 to 1969)

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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

53902103
539 02103
53902103

The product you are viewing cross references to these numbers
DISPLAYING 1 to 12 (of 12 products)
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About Flywheel / Torque

Porsche Flywheels & Torque Converters | Smooth Power Transfer & Engine Balance

Flywheels and torque converters are vital components in your Porsche’s drivetrain, ensuring smooth power transfer from the engine to the transmission. The flywheel provides rotational balance and stores kinetic energy for manual gear changes, while the torque converter in automatic models performs a similar role — transferring engine torque hydraulically for seamless acceleration.

At Design911, we supply precision-engineered flywheels and torque converters designed to meet or exceed original performance specifications. Each component is manufactured from high-grade materials, ensuring strength, balance, and reliability under all driving conditions. Whether you’re restoring a classic 911 or maintaining a modern PDK-equipped Porsche, our range provides the quality and performance your drivetrain demands.

What Do Flywheels & Torque Converters Do?

Both components play critical roles in the performance and drivability of your Porsche, acting as torque-transfer systems between the engine and gearbox.

Flywheels (Manual Transmissions):
Store rotational energy to maintain engine smoothness. Provide a friction surface for clutch engagement. Aid in gear transitions by balancing engine speed and torque.

Torque Converters (Automatic Transmissions):
Transfer torque through fluid dynamics between engine and gearbox. Enable smooth gear shifting without clutch operation. Multiply torque for efficient acceleration and smoother driving.

Together, they ensure seamless operation, smooth starts, and optimal power delivery from engine to transmission.

Why Do Flywheels & Torque Converters Fail or Wear Out?

Over time, both flywheels and torque converters experience wear due to high rotational forces, friction, and heat cycles.

Common Causes of Failure Include:

  • Heat damage or warping from clutch slippage (flywheels).
  • Cracked or worn ring gear teeth affecting starter engagement.
  • Fluid contamination or internal seal leaks (torque converters).
  • Bearing wear leading to vibration or imbalance.
  • Excessive torque or misalignment from modified engines.

Symptoms of failure may include clutch chatter, transmission shudder, vibration during acceleration, or slipping during gear changes. Ignoring these signs can lead to further drivetrain damage.

Why Replace your Flywheel or Torque Converter?

Replacing worn flywheels or torque converters restores smooth torque delivery, reduces vibration, and ensures reliable clutch or transmission performance. Upgraded lightweight flywheels improve throttle response, while performance torque converters enhance acceleration and drivability.

Key Benefits:

  • Restores smooth engine-to-transmission power delivery.
  • Eliminates vibration, slippage, and engagement issues.
  • Improves clutch or automatic transmission performance.
  • Balances rotational mass for smoother idling and shifting.
  • Available in lightweight or performance designs for tuned Porsches.
  • Ideal for clutch replacement, transmission rebuilds, or performance upgrades.

It’s strongly recommended to replace the flywheel or torque converter during any major clutch or gearbox service for long-term reliability and balanced performance.

Highlights

  • Premium Porsche flywheels and torque converters.
  • Precision-balanced for smooth, vibration-free operation.
  • Manufactured from high-strength, heat-treated materials.
  • Available for manual, automatic, and PDK Porsche models.
  • Enhances drivability, acceleration, and transmission longevity.
  • Essential for gearbox rebuilds, clutch services, and performance tuning.

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