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Torque Tube Bearing Bushing. Porsche 964 C4 /993 C4 ❭ 96442101221B
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
Restore critical drivetrain support in your Porsche 911 AWD models with this genuine-spec torque tube bearing bushing. Designed for the Porsche 964 (1989-94) C4 and 993 (1995-98) C4 series, this precision bearing support replaces the internal bushing of the torque tube and ensures your drive shaft remains aligned, smooth and free from excessive vibration. Ideal for restoring worn drive assemblies, eliminating shaft rumble or clunk, and maintaining the structural integrity of your Porsche’s AWD drivetrain.
Sold Each.
x3 Bearings Required For Torque Tube.
Fits:
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) TURBO S 1994-97
Fits Inside Diagram Ref No 1
What This Product Does:
- The bearing bushing supports the drive shaft inside the torque tube, allowing it to spin freely, in correct alignment, while the tube assembly maintains structural connection between gearbox and front differential (or transfer case) in AWD/4WD models.
- It ensures smooth rotation, minimal vibration, correct alignment of the shaft, and keeps axial or radial movement within acceptable limits. This preserves drivetrain geometry, reduces wear on the shaft/flange joints and supports NVH (noise-vibration-harshness) control.
- If the bearing bushing is worn or failed, the drive shaft may exhibit excessive movement, misalignment, vibrations, or clunking—leading to further accelerated wear of connected components (flanges, bearings, seals).
Symptoms & Signs Of Wear / Need For Replacement:
- Vibration or grinding noise from the driveline, especially under acceleration, or at certain engine/shaft speeds—indicating the shaft is not properly supported.
- Clunking or knocking when engaging drive (or during the transition of power front-to-rear) due to excessive shaft movement or misalignment.
- Uneven or accelerated wear of the drive shaft flanges, U-joints or bearings because the mis-alignment has increased load on them.
- Leaking seals around the torque tube or front differential input because the shaft may be oscillating more than designed and stressing the seals.
- Axial or radial play when inspecting the shaft within the tube—if the bearing bushing is worn, you may see movement of the shaft where it should be tight.
- Because many owners did not realise the bearings could be replaced separately, some symptoms may have been treated as drive-shaft or flange issues instead of the bearing bushing itself.
Why Replacement Matters:
- Drivetrain longevity: Replacing a worn bearing bushing prevents further damage to the drive shaft, flanges, U-joints, seals and other components that suffer when alignment is compromised.
- Noise-Vibration-Harshness improvements: A new bearing support helps reduce driveline vibrations and improves refinement—especially important for long-distance driving or performance use where shaft/torque tube behaviour matters.
- Safety & reliability: Excessive shaft movement or failure of a support in the drivetrain can lead to catastrophic failure under load—especially in AWD models. Fixing the bearing bushing restores the designed support.
- Cost-effectiveness: Previously, the only fix for a worn bearing in some models was replacing the complete torque tube (which is expensive). These individual bushings provide a more economical and practical solution.
- Performance & alignment: Proper support of the drivetrain helps maintain alignment under load, ensures power delivery remains consistent, and avoids unnecessary flex in the system which can degrade handling or drivetrain feel.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96442101221B
The product you are viewing cross references to these numbers
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
Fits:
Porsche 970 Panamera Turbo
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97042101154
The product you are viewing cross references to these numbers
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
This OE match cardan shaft (also known as a prop shaft or drive shaft) is a direct replacement for the original Porsche component used in Panamera 970 Turbo models. It transfers power from the transmission to the rear differential, enabling vehicle movement.
Fits:
Porsche 970.1 Panamera Turbo 2009 - 2013
Porsche 970.2 Panamera Turbo 2014 - 2016
Diagram ref no 1
Engineered to factory specifications, it ensures precise fitment and seamless integration into the drivetrain system.
Installed along the vehicle’s central tunnel, the shaft connects the gearbox output to the rear differential, transmitting rotational power efficiently across the drivetrain. It is designed for high-torque applications, particularly suited to the 4.8L V8 Turbo engines, and is built to withstand heavy loads, high speeds, and continuous operation.
This component transfers engine torque from the transmission to the rear wheels via the differential. It ensures smooth and efficient power delivery, allowing the vehicle to accelerate and maintain performance without vibration or drivetrain loss.
Function
• Transfers power from gearbox to rear differential
• Maintains smooth rotational motion under load
• Reduces drivetrain vibration through balanced construction
• Supports high-torque performance in turbocharged engines
• Ensures efficient power delivery to driven wheels
A worn or damaged cardan shaft can cause vibration, drivetrain noise, and inefficient power transfer. Over time, bearings and joints can wear, leading to imbalance and potential drivetrain failure. Replacing the shaft restores smooth operation, protects drivetrain components, and ensures optimal performance.
When to replace
• Noticeable vibration under acceleration or at speed
• Clunking or drivetrain noise from under vehicle
• Worn or failing centre support bearing
• During major drivetrain or transmission service
• Visible damage or imbalance in shaft assembly
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97042101154
The product you are viewing cross references to these numbers
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
- Porsche 970.2 Panamera Turbo V8 Executive 2014-16
- Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16

Fits:
Porsche 970 Panamera 4.8L Turbo
No need to replace complete prop shaft when your bearing is gone.
Simple solution, saving you loads of money.
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97042101154S
The product you are viewing cross references to these numbers
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