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Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png +443456003478 https://www.design911.co.uk Facebook Instagram

Driveshafts & Parts

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90006721102T
Product Information
Product Information
TITANIUM Driveshaft Bolt - M8 x 50
The ROHLER Titanium Driveshaft Bolt (M8 x 50) is a premium lightweight replacement fastener designed for securing the driveshaft (CV joint) on a range of classic and modern Porsche models. It is designed as a direct replacement for Porsche part number 90006721102.
Supplied as a single bolt

Fits:
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera MANUAL cars 24 per car (Not Turbo)
Porsche 911 1978-1983 3.0L / SC MANUAL cars 24 per car (Not Turbo)
Porsche 911 1984-1986 3.2L (Not Turbo) 24 per car
Porsche 911 1987-1989 3.2L G50 (Not Turbo) 24 per car

Porsche 964 (911) C4 1989-93 FRONT  12 per car
Porsche 964 (911) C4 1989-93 REAR 12 per car

Porsche 993 (911) C4 1994-97 REAR 12 per car
Porsche 993 (911) C4S 1994-97 REAR 12 per car
Porsche 993 (911) TURBO 1994-96 REAR 12 per car

Porsche Boxster 986 2.5L 1997-99 REAR 12 per car
Porsche Boxster 986 2.7L 1999-02 REAR 12 per car

Porsche 996 C4 3.4L 1997-08/01 FRONT 12 per car
Porsche 996 C4 3.6L 09/01-2005 FRONT 12 per car
Porsche 996 C4S 3.6L 09/01-2005 FRONT 12 per car
Porsche 996 TURBO 2000-05 FRONT 12 per car

Diagram ref no 3

The driveshaft bolt secures the driveshaft (CV joint) to the drivetrain assembly, maintaining the correct clamping force to minimise movement and ensure reliable transmission of engine torque to the wheels.

Key Features & Benefits
  Premium ROHLER titanium construction
  Direct replacement for Porsche 90006721102
  Lightweight with an excellent strength-to-weight ratio
  Outstanding corrosion resistance
  Precision-machined for OEM-style fitment
  Suitable for road, fast road, and motorsport applications
  Sold individually (purchase the required quantity for your vehicle)

Why Replacing Driveshaft Bolts Matters
Driveshaft bolts are subjected to high torque loads and constant vibration. During driveshaft or CV joint servicing, Porsche recommends inspecting the mounting hardware, and replacing worn or damaged bolts helps maintain the correct clamping force and reduces the risk of loosening during operation. High-quality replacement bolts are particularly important on performance and high-mileage vehicles.

When to Replace Driveshaft Bolts
•  During CV joint or driveshaft replacement
•  When replacing CV boots
•  If the original bolts are corroded, damaged, or have worn threads
•  If bolt heads are rounded or show signs of stretching
•  During drivetrain restoration or performance upgrades
•  Whenever the original fastening hardware no longer meets specification

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

90006721102T
90006721109
90006721102
90006721101
N0147513

The product you are viewing cross references to these numbers
DISPLAYING 33 to 33 (of 33 products)
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About Driveshafts & Parts

Porsche Driveshafts & Driveshaft Parts | Precision Power Delivery & Smooth Driveline Operation

Driveshafts play a vital role in transmitting engine power from your Porsche’s gearbox or differential to the wheels. A well-balanced driveshaft ensures smooth, vibration-free performance, allowing torque to be delivered evenly across all driving conditions.

At Design911, we supply premium driveshafts and replacement driveshaft components engineered to meet or exceed original performance specifications. Each unit is manufactured from high-strength steel or lightweight alloy for maximum torsional rigidity and balance. Our range also includes complete driveshaft assemblies, universal joints, CV joints, couplings, and hardware — all designed for long-lasting reliability and precise fitment.

Whether you’re restoring a classic 911, maintaining a Cayman or Boxster, or upgrading a performance model, our driveshafts and parts ensure smooth power transfer, reduced vibration, and dependable performance.

What Do Driveshafts Do?

The driveshaft is a critical link in your Porsche’s powertrain, connecting the transmission to the driven wheels. It rotates at high speeds, transmitting torque and maintaining balanced motion across suspension travel and gear changes.

Core Functions:

  • Transfers engine torque from gearbox or differential to the wheels.
  • Maintains rotational balance for smooth driving and handling.
  • Absorbs movement between suspension and transmission components.
  • Supports consistent traction and performance under load.

Without a properly functioning driveshaft, power delivery becomes uneven, causing vibration, noise, and potential drivetrain failure.

Why Do Driveshafts Fail or Wear Out?

Driveshafts and their components endure constant rotational forces, torque, and flexing during operation. Over time, these stresses — along with environmental exposure — lead to wear and imbalance.

Common Causes of Failure Include:

  • Worn CV or universal joints causing vibration or clunking noises.
  • Damaged or torn driveshaft boots allowing grease loss and contamination.
  • Corrosion or impact damage to the shaft itself.
  • Imbalance from worn bearings or misalignment.
  • Excessive torque loads from high-performance driving.

When these components wear out, symptoms such as vibration, knocking, or shuddering during acceleration or braking may occur — indicating it’s time for inspection or replacement.

Why Replace Your Porsche Driveshafts & Parts?

Replacing a worn or damaged driveshaft or its components restores balance, smoothness, and reliable torque transfer. Upgraded driveshafts or reinforced components can handle higher power output and reduce rotational mass for enhanced performance.

Key Benefits:

  • Restores smooth, vibration-free driveline operation.
  • Prevents transmission and differential wear.
  • Improves torque transfer and handling precision.
  • Reduces noise, vibration, and harshness (NVH).
  • Manufactured from high-strength materials for durability.
  • Available as complete driveshaft assemblies or individual parts.

It’s recommended to inspect and replace driveshaft joints, couplings, and boots during clutch or transmission servicing to prevent secondary damage.

Highlights

  • High-quality Porsche driveshafts and component parts.
  • Engineered for precision balance and smooth performance.
  • Includes complete assemblies, joints, boots, and couplings.
  • Designed for Porsche 911, Cayman, Boxster, Panamera, and more.
  • Direct-fit replacements built for road or performance applications.
  • Essential for maintaining drivetrain reliability and handling.       

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