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Gearbox Mounts
Fits:
Porsche 356 - 1950 to 1955
Porsche 356A - 1955 to 1959
Porsche 356B - 1959 to 1963
Porsche 356C - 1963 to 1965
This gearbox mount set includes the rear left and right mounts, positioned at an angle on the side of the gearbox, as well as the two front round rubber mounts. Even without visible damage the aging rubber in the bearing block can become porous, causing unwanted play in the transmission within its holder.
Click 'Zoom in' for large parts diagram.
Diagram ref no 43 and 49
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
5192009KIT
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356SC and Super 90 with Camber Compensator
2 Required. Price shown is for each.
Click 'Zoom in' for large parts diagram.
Diagram ref no 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69533320500GRV
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356 B 1960-63
Porsche 356 C 1963-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69533324101
The product you are viewing cross references to these numbers
- Porsche 356B 1959-63
- Porsche 356C 1963-65
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12 Month Warranty
Worldwide Delivery
Camber Compensator Bolt
Sold each – 2 required per car
The OE Match Camber Compensator Bolt is a replacement
fastening component for the rear suspension camber compensator assembly fitted
to 356 models.
Fits:
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Diagram ref no 12
It helps secure the compensator assembly, maintaining correct positioning and reliable operation of the rear suspension components.
What Does It Do?
The bolt secures part of the camber compensator assembly, which helps control rear suspension movement and camber changes on applicable swing-axle Porsche 356 models.
Why Does It Fail?
Common causes include:
- Corrosion and age-related deterioration
- Damaged or stripped threads
- Incorrect tightening
- Wear from suspension movement
- Damage during removal or installation
When Should It Be Replaced?
Replace if the bolt is bent, corroded, damaged or has worn threads.
Inspection is recommended whenever the camber compensator or associated rear suspension components are removed.
Checks & Installation
Inspect the bolt, mounting points, bushes and associated hardware for wear or damage.
Fit using the correct Porsche workshop tightening specifications and ensure the compensator assembly is securely mounted.
Key Features
- OE Match replacement camber compensator bolt
- Designed for applicable Porsche 356 rear suspension assemblies
- Helps secure the camber compensator
- Replaces damaged or corroded original hardware
- Suitable for classic Porsche suspension restoration
Porsche 356 Camber Compensator & Rear Suspension Parts
The camber compensator is an important component of certain Porsche 356 rear suspension systems, helping manage swing-axle movement and improve vehicle stability.
Maintaining the correct mounting bolts and associated hardware helps ensure secure installation and dependable suspension operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69533324101
The product you are viewing cross references to these numbers
- Porsche 356B 1959-63
- Porsche 356C 1963-65
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12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356B Super 90, 356SC, Carrera 1600 and Carrera 2 - 356B, 356C.
For cars with Camber Compensator
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90007900303
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Castle Nut M10x1
Sold each
The OE Match Castle Nut M10x1 is a replacement castellated
retaining nut for the rear camber compensator fitted to selected Porsche 356B
and 356C models.
Fits:
- Porsche 356B Super 90
- Porsche 356SC
- Porsche 356 Carrera 1600
- Porsche 356 Carrera 2
Diagram ref no 15
Its slotted design allows the nut to be secured with a split pin, helping prevent loosening and maintain a secure suspension connection.
What Does It Do?
The castle nut secures the camber compensator mounting connection.
Its castellated slots accommodate a split pin, providing mechanical retention to help prevent the nut from loosening during suspension movement.
Why Does It Fail?
Common causes include:
Corrosion and age-related deterioration Damaged or stripped threads Overtightening during installation Deformed castellated slots Damage during suspension servicingWhen Should It Be Replaced?
Replace if the nut shows corrosion, thread damage, deformation or excessive wear.
It should also be replaced if it cannot be correctly tightened and secured with the appropriate split pin.
Checks & Installation
Inspect the camber compensator mounting bolt and associated components for damage.
Fit the correct M10x1 castle nut, tighten to the Porsche workshop specification and secure using a new split pin.
Never reuse a damaged nut or substitute an incorrect thread size.
Key Features
OE Match replacement castle nut Porsche reference 90007900303 M10x1 fine-thread specification Castellated design for split-pin retention Suitable for selected Porsche 356B and 356C models Designed for camber compensator applications Ideal for suspension servicing and restorationPorsche 356B / 356C Camber Compensator Nuts & Suspension Fasteners
The rear camber compensator is an important suspension component fitted to selected Porsche 356B and 356C models, helping control rear suspension behaviour.
Correct fastening components are essential for maintaining secure camber compensator mounting connections.
The OE Match Castle Nut M10x1, part number 90007900303, provides a replacement for worn or damaged retaining nuts on compatible Porsche 356B Super 90, 356SC and Carrera models.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90007900303
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356 / 356A 1950-59
Porsche 356B / 356C 1960-65
Click 'Zoom in' for large parts diagram.
Diagram ref no 43
2 Required. Price shown is for each.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
51920016
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356 / 356A 1950-59
Porsche 356B / 356C 1960-65
Diagram ref no 43
2 Required. Price shown is for each.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
51920016
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
.jpg?width=200&height=150&format=webp&quality=65&iv=rendition-2 "Mounting pot gearbox mount. Porsche 356 - 64420505")
Gearbox Mounting Pot
Sold each - 2 required per car
Precision-engineered gearbox mounting pot designed for Porsche 356A, 356B, and 356C models. This high-quality replacement
component is CNC machined for exceptional accuracy, strength, and fitment,
making it ideal for restoration and repair projects on classic Porsche
drivetrains.
Fits:
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Diagram ref no 6
Manufactured in bare metal and left unpainted, this mounting pot provides the flexibility for custom finishing, painting, or coating during restoration work.
Designed to support secure gearbox mounting and maintain proper drivetrain alignment, this component helps preserve transmission stability and overall vehicle performance.
Carefully machined to ensure OEM-style geometry and dependable fitment, this part is suitable for concours restorations, workshop repairs, or long-term classic Porsche maintenance.
Key Features
• Gearbox mounting pot – part number 64420505
• Designed for Porsche 356A / 356B / 356C
• Precision CNC machined construction
• Supplied in bare metal / unpainted finish
• OEM-style fitment and geometry
• Supports secure gearbox mounting
• Ideal for restoration and repair projects
• Durable and accurately engineered
• Suitable for custom finishing or coating
Function and Purpose
This gearbox mounting pot is an important drivetrain support component.
It helps to:
• Maintain proper gearbox positioning
• Support drivetrain stability
• Ensure correct transmission alignment
• Restore original mounting integrity
• Improve long-term reliability in classic Porsche applications
Why Replace Gearbox Mounting Components
Over time, original mounting components may suffer from:
• Corrosion and rust damage
• Fatigue or cracking
• Wear from drivetrain movement
• Poor alignment caused by ageing components
• Structural deterioration during restoration
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
64420505
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356
For cars with Camber Compensator
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69533323500
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 356B Super 90, 356SC, Carrera 1600 And Carrera 2 - 356B, 356C.
For Cars With Camber Compensator.
Diagram Ref No 14
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
69533320700
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
Sold each - 6 required per car
Fits:
Porsche 356 Pre A - 1950 to 1955
Porsche 356A - 1955 to 1959
Porsche 356B - 1959 to 1963
Porsche 356C - 1963 to 1965
Stainless steel spacer plate for all dual mount 356 gearboxes
Diagram ref no 45
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG20539
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
The transmission mount helps hold the manual gearbox in place, ensuring it stays securely positioned under side load and torque. It also absorbs engine and drivetrain vibration, preventing it from transmitting into the cabin or other chassis components. By maintaining proper transmission alignment, it supports smooth gear shifting and reduces stress on linkage and drivetrain parts.
Fits:
Porsche 356 1.1-2.0L 08/1950 - 04/1965
Diagram ref no 49
Installed between the transmission housing and the vehicle’s chassis or subframe, this mount:
• Secures the manual transmission in its correct position
• Dampens vibration and noise from the drivetrain
• Helps maintain accurate drivetrain alignment
• Reduces wear on surrounding mounts, brackets, and hardware
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
5192009
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Shop Securely
12 Month Warranty
Worldwide Delivery
-
Transmission case with Transmission suspension 356B / 356C 1960-1965 302-000
-
Transmission cover / Intermediate plate 356B / 356C 1960-1965 302-005
-
Front axle / SCHMIERSTOFFE 356B / 356C 1960-1965 401-000
-
Rear axle / Additional spring (Model: 1600 :M, 1600 S:M, 1600 S90, CARRERA) 356B / 356C 1960-1965 502-000
Porsche Gearbox Mounts | Stability, Precision & Reduced Drivetrain Vibration
Gearbox mounts (also known as transmission mounts) are essential components that secure your Porsche’s gearbox to the chassis while isolating vibration and absorbing torque movement. These mounts play a crucial role in maintaining drivetrain alignment, smooth shifting, and overall driving comfort.
At Design911, we supply high-quality gearbox mounts and transmission mounting kits engineered to meet or exceed original performance specifications. Constructed from advanced rubber, polyurethane, or hydraulic materials, each mount provides the perfect balance of flexibility and strength — ensuring your Porsche maintains stable, refined performance under both road and track conditions.
Whether you’re restoring a classic Porsche or maintaining a modern performance model, our gearbox mounts deliver long-lasting stability, improved handling, and reduced drivetrain noise and harshness.
What Do Gearbox Mounts Do?
Gearbox mounts act as the vital connection between your Porsche’s transmission system and chassis, absorbing torque and vibration while maintaining alignment under load.
Core Functions:
- Secure the gearbox in place under acceleration, braking, and cornering.
- Absorb vibration and noise from the drivetrain.
- Maintain correct driveshaft and linkage alignment.
- Prevent excess movement that can stress surrounding components.
Without properly functioning gearbox mounts, excessive drivetrain movement can lead to harsh shifting, vibration, and even damage to exhaust, linkage, or driveshaft components.
Why Do Gearbox Mounts Fail or Wear Out?
Over time, gearbox mounts degrade due to exposure to engine heat, torque stress, and environmental factors such as oil contamination or moisture.
Common Causes of Failure Include:
- Rubber deterioration or cracking from heat and age.
- Hydraulic fluid leakage in fluid-filled mounts.
- Metal fatigue in high-performance or heavy-load use.
- Oil contamination softening rubber compounds.
- Continuous torque stress from aggressive acceleration.
As mounts weaken, you may experience clunking noises, drivetrain vibration, gear lever movement, or difficulty shifting — all signs that your gearbox mounts need replacement.
Why Replace or Upgrade Your Gearbox Mounts?
Replacing worn gearbox mounts restores drivetrain stability, smoother shifting, and reduced vibration. Upgrading to reinforced or performance mounts enhances control and torque response, especially on tuned or track-driven Porsches.
Key Benefits:
- Restores smooth, vibration-free gear changes.
- Prevents drivetrain movement and component stress.
- Improves handling precision and throttle response.
- Reduces noise, vibration, and harshness (NVH).
- Available in rubber, polyurethane, and performance-spec designs.
- Ideal for maintenance, upgrades, or complete gearbox servicing.
Replacing mounts in pairs ensures balanced performance and consistent driveline alignment.
Highlights
- Premium Porsche gearbox and transmission mounts.
- Engineered for strength, durability, and vibration reduction.
- Direct-fit replacements for Porsche 911, Cayman, Boxster, and others.
- Reinforced designs for performance or track applications.
- Reduces stress on transmission and drivetrain components.
- Essential for smooth shifting, refinement, and drivetrain longevity.
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Clutch Kits
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Clutch Friction Plate
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Clutch Pressure Plate
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Clutch Release Bearings
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Clutch Cables & Parts
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Clutch Guide Tube
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Clutch Bolts
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Gearbox Parts
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Driveshafts & Parts
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Gasket Sets / Gaskets / Seals / Lock Nuts
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Gearshift Control Parts
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Flywheel / Torque
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CV Joints Kits
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CV Boots and Kits
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Cardan Shaft / Prop Shaft
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Gearbox / Differential Oil
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Gearbox Sump / Oil Pan
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Rear Differential
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Motor Sport Parts
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