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Cardan Shaft / Prop Shaft
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
Direct-fit upgraded replacement for the rear flex disc (guibo) on AWD Porsche 996 Carrera 4, 4S and Turbo models. OEM cross-reference PCG42102001. Rubber body with metal bushings to isolate driveline vibration while transmitting torque smoothly. Perfect when your original guibo shows age, cracking, or causes driveline vibration/clunks.
Compatible for:
- · Porsche 996 C4 3.4L 1997-08/01
- · Porsche 996 C4 3.6L 09/01-2005
- · Porsche 996 C4S 3.6L 09/01-2005
- · Porsche 996 TURBO 2000-05
- · Porsche 996 GT2 2001-05
- · Porsche 997 MK1 Carrera 2 3.6L 2005-08
- · Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- · Porsche 997 MK1 Carrera 4 3.6L 2005-08
- · Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- · Porsche 997 MK1 TURBO 2007-09
- · Porsche 997 MKII Turbo 2010-13
Why you should replace the flex disc
- Worn rubber = vibration & driveline shock. The flex disc isolates rotational forces, as the rubber hardens, cracks or tears, it transmits vibration and can produce shuddering at idle/low speeds or a clunk during acceleration. Owners commonly report these symptoms before a failure.
- Prevents secondary damage. A failed flex disc can allow excessive play between the driveshaft and transmission flange, stressing flange bolts, the driveshaft and the transmission output — leading to far more expensive repairs.
- Affordable, quick fix vs replacing the whole shaft. Replacing this single part is significantly cheaper than replacing the full cardan/driveshaft assembly and restores NVH and drivability.
Common issues / failure signs
- Noticeable vibration through the car (often at certain speeds or under acceleration).
- Clunking or knocking from the center/rear when accelerating from low speed or shifting — typically caused by lost rubber compliance or torn bores.
- Visible cracking, chunks missing, or separation of the rubber around the bolt bores (inspect visually with the car safely supported). Micro-cracks can quickly grow into failure.
- Corroded or stretched mounting hardware — always inspect/replace bolts and washers when servicing the guibo.
Fits to No 8 , 9, 13 on the diagram.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99642101000
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
Fits:
Porsche 996 C4 / C4S 1999-2005 All-Wheel Drive
Porsche 996 Turbo 2001-05
Porsche 997 C4 2006-08
Porsche 997 Turbo MKI & MKII 2007-13
Click picture for large parts diagram.
Diagram parts Ref No 9.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99642114501
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
Fits:
Porsche 997.1 Carrera 4 2006-08
Porsche 997.1 Turbo 2007-09
Porsche 997.2 Turbo 2010-13
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99737593400
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13

Fits:
Porsche 997.2 Carrera 4 2009-13
Porsche 997.1 Turbo 2007-09
Porsche 997.2 Turbo 2010-13
Click 'Zoom in' for large parts diagram.
Diagram ref no 2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99907203401
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Turbo 2010-13

Fits:
Porsche 997.1 Carrera 4 2006-08
Porsche 997.2 Carrera 4 2009-13
Porsche 997.1 Turbo 2007-09
Porsche 997.2 Turbo 2010-13
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99737525700
The product you are viewing cross references to these numbers
- Porsche 997 MKII Turbo 2010-13
Fits:
Porsche 997 MKII Turbo 2010
Click picture for large parts diagram.
Diagram parts Ref No 8.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99742102001
The product you are viewing cross references to these numbers
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
Upgraded Cardan Driveshaft Flex Disc (Guibo)
Restore smooth, vibration-free power delivery with this OE
Match Upgraded Cardan Driveshaft Flex Disc (Guibo).
Fits:
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
Fits to No 8 on the diagram
This direct-fit upgraded replacement eliminates the need to purchase an expensive complete propshaft assembly. Instead, simply replace the worn rear flex disc with this high-quality OE Match component, restoring the smooth driveline performance your Porsche was designed to deliver while saving hundreds over replacing the complete shaft.
Manufactured using a durable reinforced rubber body with precision-engineered steel bushings, this upgraded flex disc effectively absorbs drivetrain shock and vibration while transmitting engine torque smoothly through the AWD driveline.
What Does the Flex Disc (Guibo) Do?
The flex disc, also known as the guibo, connects the rear section of the cardan driveshaft to the drivetrain while allowing controlled flexibility during operation.
Its primary functions include:
- Transmitting engine torque from the gearbox to the driveshaft.
- Absorbing driveline shock loads. Reducing drivetrain vibration.
- Minimising transmission noise.
- Compensating for slight driveline movement.
- Protecting the transmission, differential and propshaft from excessive stress.
- Delivering smooth power transfer through the AWD system.
Without a correctly functioning flex disc, excessive vibration and driveline shock can rapidly accelerate wear of surrounding components.
Why Do Flex Discs Fail?
The flex disc operates under constant torsional load and is exposed to significant heat and drivetrain movement. Over time, the rubber element naturally deteriorates.
Common causes include:
- Age-related rubber degradation.
- Repeated torque loading.
- Heat from the transmission and exhaust system.
- Oil contamination. High mileage.
- Aggressive driving.
- Hard launches.
- General material fatigue.
Eventually the rubber develops cracks, loses flexibility and allows excessive movement within the driveline.
Symptoms of a Worn Flex Disc
A failing flex disc commonly causes:
- Clunking noises when accelerating or changing gear.
- Driveline vibration.
- Knocking during take-off.
- Excessive drivetrain movement.
- Jerky power delivery.
- Visible cracks in the rubber coupling.
- Deteriorated rubber around the metal bushes.
Replacing the flex disc before complete failure helps prevent damage to the propshaft, differential and transmission.
When Should the Flex Disc Be Replaced?
Replacement is recommended whenever:
- Cracks appear in the rubber body.
- Driveline vibration develops.
- Clunking noises occur during acceleration or gear changes.
- The propshaft is removed for servicing.
- During clutch or transmission work.
- High mileage vehicles are undergoing preventative maintenance.
- Excessive movement is detected during inspection.
Replacing a worn flex disc restores smooth drivetrain operation and protects expensive AWD transmission components.
Why Choose This Upgraded OE Match Flex Disc?
Unlike replacing the complete propshaft assembly, this upgraded OE Match flex disc provides a cost-effective repair while maintaining OE fitment and performance.
Benefits include:
- Direct-fit replacement.
- Upgraded reinforced construction.
- High-strength rubber compound.
- Precision steel bushings.
- Excellent vibration isolation.
- Smooth torque transmission.
- Significant cost saving over complete driveshaft replacement.
- OE-quality fit and reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99642101000
The product you are viewing cross references to these numbers
Porsche Cardan Shaft / Prop Shaft | Precision Torque Transfer & Reliability
The cardan shaft (also known as the prop shaft or drive shaft) is a critical drivetrain component that transfers torque from your Porsche’s transmission to the differential, ensuring smooth, efficient power delivery to the driven wheels. Designed to handle high rotational forces and maintain perfect balance, it plays a vital role in drivetrain stability, acceleration, and handling precision.
At Design911, we supply a comprehensive range of high-quality cardan shafts and prop shaft components, engineered to match or exceed original performance standards. Crafted from precision-balanced steel or lightweight alloy materials, these units deliver maximum strength, minimal vibration, and long-term durability for both classic and modern Porsche models.
Whether you’re replacing a worn unit, restoring a vintage drivetrain, or upgrading for track performance, our cardan shafts ensure smooth power transfer, reduced drivetrain noise, and enhanced reliability — engineered for the ultimate Porsche driving experience.
What Does a Cardan Shaft / Prop Shaft Do?
A prop shaft connects your Porsche’s gearbox to the rear or front differential, transmitting rotational power across the drivetrain. It maintains alignment and balance under high-speed operation, compensating for suspension movement and engine torque variation.
Core Functions:
- Transfers torque from the transmission to the differential.
- Maintains balance and rotational stability at high speeds.
- Absorbs drivetrain movement via universal joints and couplings.
- Minimises vibration and noise through precision balancing.
- Ensures consistent performance under acceleration and load.
A properly functioning cardan shaft is vital for smooth drivetrain performance, responsive acceleration, and overall vehicle safety.
Why Do Cardan Shafts or Prop Shafts Fail?
Cardan shafts endure extreme rotational forces, temperature fluctuations, and constant mechanical stress — making wear inevitable over time.
Common Causes of Failure Include:
- Worn
universal joints (U-joints) leading to vibration or knocking sounds.
- Damaged
centre bearings causing drivetrain imbalance.
- Rust
and corrosion on the shaft surface or couplings.
- Imbalanced
or bent shafts from impact or hard acceleration.
- Degraded rubber couplings or flexible joints (guibos).
Neglecting a failing shaft can lead to severe drivetrain
vibration, power loss, and even transmission damage, so early inspection
and replacement are crucial.
Why Replace or Upgrade
Your Porsche Cardan Shaft?
Replacing your worn or damaged cardan shaft restores drivetrain smoothness and safety, while upgrading to a performance-balanced version enhances response, efficiency, and longevity.
Key Benefits:
- Restores
drivetrain balance and smooth torque delivery.
- Eliminates vibration, clunking, and driveline noise.
- Prevents
damage to transmission and differential components.
- Improves
performance through precision-balanced design.
- Available for classic and modern Porsche models.
- High-strength materials ensure long-term reliability.
Perfect for restoration, performance tuning, or regular maintenance, our cardan shafts provide manufacturer-quality fitment and durability for the most demanding conditions.
Highlights:
- Precision-balanced Porsche cardan & prop shafts.
- Available with universal joints, bearings & couplings.
- Reduces drivetrain vibration & noise.
- Direct-fit replacement or upgraded versions.
- Lightweight, corrosion-resistant materials.
- Tested for alignment, torque strength & balance.