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Porsche > Cayman 987C / 981C (2005-2016) > Cayman 2.7L 987C 2006-08 > Gearbox / Transmission >

Gasket Sets / Gaskets / Seals / Lock Nuts

Gasket Sets / Gaskets / Seals / Lock Nuts

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DISPLAYING 1 to 12 (of 12 products)
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman - 016409399B
3
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman
Special Order item
016409399B
Product Information
Product Information
Differential output shaft seal.

porsche

Fits:
For cars with manual transmission
Porsche 924 1976-88
Porsche 944 1982-91
Porsche 986 / 987 / 981 / 982 Boxster 1997>>
Porsche 987 / 981 / 982 Cayman 2005>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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016409399B
016409399B

The product you are viewing cross references to these numbers
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman - 016409399B, 314096090323, 016409399B, 15195, 190035410, 108768 - V103335
3
Differential output shaft seal. Porsche 924 / 944 / Boxster / Cayman
016409399B/1
Product Information
Product Information
Differential output shaft seal.

oematch

Fits:
For cars with manual transmission
Porsche 924 1976-88
Porsche 944 1982-91
Porsche 986 / 987 / 981 / 982 Boxster 1997>>
Porsche 987 / 981 / 982 Cayman 2005>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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Related, superseded, cross reference or alternative numbers for comparison.

016409399B
016409399B
314096090323
016409399B
15195
190035410
108768

The product you are viewing cross references to these numbers
Gearbox Input Seal. Porsche 987/981 Boxster / 987/981 Cayman - 016311113C, 012311113B
2
Gearbox Input Seal. Porsche 987/981 Boxster / 987/981 Cayman
Special Order item
016311113C
Product Information
Product Information
Gearbox Input Seal. 24.9x40x8mm

Fits:
For cars with MANUAL transmission
Porsche 986 Boxster / Boxster S 1997-2004
Porsche 987 Boxster / Boxster S / Spyder 2005-12
Porsche 981 Boxster / Boxster S 2013>>
Porsche 987C Cayman / Cayman S / R 2005-13
Porsche 981C Cayman / Cayman S 2014>>

Diagram ref no 7

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Related, superseded, cross reference or alternative numbers for comparison.

016311113C
016311113C
012311113B

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Oil pan gasket. Porsche 986 Boxster / 987 Boxster / 987C Cayman Tiptronic Gearbox - 98639701600, 634.061
2
Oil pan gasket. Porsche 986 Boxster / 987 Boxster / 987C Cayman Tiptronic Gearbox
Special Order item
98639701600
Product Information
Product Information
Oil pan gasket.

porsche

Fits:
Porsche 986 Boxster 1997-04 Tiptronic
Porsche 987 Boxster 2005-08 Tiptronic
Porsche 987C Cayman 2007>> Tiptronic
Porsche 996 1998-05 Tiptronic

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Diagram ref no 2

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

98639701600
98639701600
634.061

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Oil pan gasket. Porsche 986 Boxster / 987 Boxster / 987C Cayman Tiptronic Gearbox - 98639701600 - 2002-V175
2
Oil pan gasket. Porsche 986 Boxster / 987 Boxster / 987C Cayman Tiptronic Gearbox
98639701600/2
Product Information
Product Information
Oil pan gasket.

oematch

Fits:
Porsche 986 Boxster 1997-04 Tiptronic
Porsche 987 Boxster 2005-08 Tiptronic
Porsche 987C Cayman 2007>> Tiptronic
Porsche 996 1998-05 Tiptronic

Click 'Zoom in' for large parts diagram.
Diagram ref no 2

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98639701600
98639701600

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O-Ring. Porsche 986 / 987 Boxster / Cayman 1997-08 - 01V409133A, 98639702800
3
O-Ring. Porsche 986 / 987 Boxster / Cayman 1997-08
Special Order item
01V409133A
Product Information
Product Information
O-Ring.

The O-Ring is a genuine Porsche sealing component designed to provide a secure, leak-proof seal between connected components within drivetrain or transmission systems. Manufactured from durable, heat-resistant elastomer material, this O-ring ensures proper sealing under pressure while maintaining system integrity.

Fits:

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche Boxster S 986 3.2L 2003-04
  • Porsche Boxster 987 2.7L 2005-08/08
  • Porsche Boxster 987 S 3.2/3.4L 2005-08/08
  • Porsche Cayman 2.7L 987C 2006-08
  • Porsche Cayman S 3.4L 987C 2005-08 
 
Diagram Ref No 5

What This Product Does:

  • Creating a tight seal between mating components
  • Preventing oil or fluid leaks within sealed assemblies
  • Maintaining proper system pressure
  • Protecting internal components from contamination
  • Ensuring smooth and reliable operation of connected parts

Symptoms Of Wear Or Failure:
  • Fluid leaks around sealed joints or housings
  • Oil residue or buildup near fittings
  • Reduced system pressure
  • Hardened, flattened, or cracked rubber seal
  • Moisture or contaminants entering sealed components

Why Replacement Matters:
  • Prevent oil or transmission fluid leaks
  • Maintain proper pressure within mechanical systems
  • Protect internal components from contamination
  • Restore proper sealing performance
  • Avoid costly repairs caused by fluid loss



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

01V409133A
01V409133A
98639702800

The product you are viewing cross references to these numbers
O-Ring. Porsche 986 / 987 Boxster / Cayman 1997-08 - 01V409133A, 98639702800 - G-ORG-77762
3
O-Ring. Porsche 986 / 987 Boxster / Cayman 1997-08
01V409133A/1
Product Information
Product Information
O-Ring.

The O-Ring is a OE MATCH sealing component designed to provide a secure, leak-proof seal between connected components within drivetrain or transmission systems. Manufactured from durable, heat-resistant elastomer material, this O-ring ensures proper sealing under pressure while maintaining system integrity.

Fits:

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche Boxster S 986 3.2L 2003-04
  • Porsche Boxster 987 2.7L 2005-08/08
  • Porsche Boxster 987 S 3.2/3.4L 2005-08/08
  • Porsche Cayman 2.7L 987C 2006-08
  • Porsche Cayman S 3.4L 987C 2005-08 
 
Diagram Ref No 5

What This Product Does:

  • Creating a tight seal between mating components
  • Preventing oil or fluid leaks within sealed assemblies
  • Maintaining proper system pressure
  • Protecting internal components from contamination
  • Ensuring smooth and reliable operation of connected parts

Symptoms Of Wear Or Failure:
  • Fluid leaks around sealed joints or housings
  • Oil residue or buildup near fittings
  • Reduced system pressure
  • Hardened, flattened, or cracked rubber seal
  • Moisture or contaminants entering sealed components

Why Replacement Matters:
  • Prevent oil or transmission fluid leaks
  • Maintain proper pressure within mechanical systems
  • Protect internal components from contamination
  • Restore proper sealing performance
  • Avoid costly repairs caused by fluid loss



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

01V409133A
01V409133A
98639702800

The product you are viewing cross references to these numbers
Seal for Differential Output Shaft - Cover Side - for Porsche 986 / 987-1 Boxster & Cayman (Tiptronic Gearbox) - 98639702700
4
Seal for Differential Output Shaft - Cover Side - for Porsche 986 / 987-1 Boxster & Cayman (Tiptronic Gearbox)
Special Order item
98639702700
Product Information
Product Information

Oil seal for the short differential output shaft, located on the side of the gearbox with the differential cover. 

Outer Diameter: 90mm. 

Fits:
Vehicles With Tiptronic Transmission (PR 249)
Porsche 986 Boxster 1997-04

Porsche 987-1 Boxster 2005-08 
Porsche 987-1 Cayman 2006-08

Diagram ref. 3.



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

98639702700
98639702700

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Seal For Differential Output Shaft Flange For Porsche 986/987-1 Boxster & Cayman / 996-1 Carrera 3.4L (Tiptronic Gearbox) - 99639701500
3
Seal For Differential Output Shaft Flange For Porsche 986/987-1 Boxster & Cayman / 996-1 Carrera 3.4L (Tiptronic Gearbox)
Special Order item
99639701500
Product Information
Product Information
Oil Seal For The Long Differential Output Shaft Flange, Located On The Side Of The Gearbox Without The Differential Cover Plate. 

Outer Diameter: 54mm. 

Fits:
Vehicles With Tiptronic Transmission (PR 249)
Porsche 986 Boxster 1997>>2004

Porsche 987.1 Boxster MKI 2005>>2008
Porsche 987.1 Cayman 2006>>2008

Porsche 996 Carrera 3.4L 1998>>2001

Diagram Ref No 3

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99639701500
99639701500

The product you are viewing cross references to these numbers
Seal For Differential Output Shaft, Cover Side. Porsche 986 / 987-1 Boxster & Cayman (Tiptronic Gearbox) - 98639702700 - G-ASR-5HP19FL
2
Seal For Differential Output Shaft, Cover Side. Porsche 986 / 987-1 Boxster & Cayman (Tiptronic Gearbox)
98639702700/1
Product Information
Product Information
Seal For Differential Output Shaft, Cover Side.

The Differential Output Shaft Seal – Cover Side is a OE MATCH drivetrain sealing component designed to prevent gear oil leakage from the differential where the output shaft exits the differential housing. This seal helps maintain proper lubrication inside the differential while protecting internal gears and bearings from contamination.

Fits:

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche Boxster S 986 3.2L 2003-04
  • Porsche Boxster 987 2.7L 2005-08/08
  • Porsche Boxster 987 S 3.2/3.4L 2005-08/08
  • Porsche Cayman 2.7L 987C 2006-08
  • Porsche Cayman S 3.4L 987C 2005-08

Diagram Ref No 3

What This Product Does:
  • Sealing the differential output shaft opening
  • Preventing gear oil leaks from the differential housing
  • Maintaining proper lubrication of internal gears
  • Protecting internal components from dirt and debris
  • Supporting smooth and reliable drivetrain operation

Symptoms Of Wear Or Failure:
  • Gear oil leaks near the differential or axle area
  • Oil spots under the vehicle
  • Low differential fluid levels
  • Whining or grinding noises from the drivetrain
  • Oil residue around the differential housing or driveshaft connection

Why Replacement Matters:
  • Prevent gear oil leaks
  • Maintain proper differential lubrication
  • Protect gears and bearings from premature wear
  • Ensure smooth drivetrain performance
  • Avoid costly differential repairs or replacement



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

98639702700
98639702700

The product you are viewing cross references to these numbers
Seal Front Oil Pump Tiptronic Gearbox. Porsche 996 / Boxster / Cayman / 968 - 99639701000
3
Seal Front Oil Pump Tiptronic Gearbox. Porsche 996 / Boxster / Cayman / 968
Special Order item
99639701000
Product Information
Product Information
Seal Front Oil Pump Tiptronic Gearbox.

porsche

Fits:
Porsche 996 1998-2001
Porsche 986 Boxster 1997-04
Porsche 987 Boxster 2005-08
Porsche 987 Cayman 2007>>
Porsche 968 1992-95

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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

99639701000
99639701000

The product you are viewing cross references to these numbers
Seal Front Oil Pump Tiptronic Gearbox. Porsche 996 / Boxster / Cayman / 968 - 99639701000 - O-PPS-XHPXX-01
2
Seal Front Oil Pump Tiptronic Gearbox. Porsche 996 / Boxster / Cayman / 968
99639701000/1
Product Information
Product Information
Seal Front Oil Pump Tiptronic Gearbox.

The Front Oil Pump Seal for Tiptronic Gearbox is a OE MATCH transmission sealing component designed to prevent automatic transmission fluid (ATF) from leaking around the front oil pump assembly. This seal maintains proper fluid containment within the gearbox, ensuring correct hydraulic pressure and reliable transmission operation.

Fits:

  • Porsche Boxster 986 2.5L 1997-99
  • Porsche Boxster 986 2.7L 1999-02
  • Porsche Boxster S 986 3.2L 1999-02
  • Porsche Boxster 986 2.7L 2003-04
  • Porsche Boxster S 986 3.2L 2003-04
  • Porsche Boxster 987 2.7L 2005-08/08
  • Porsche Boxster 987 S 3.2/3.4L 2005-08/08
  • Porsche 996 C2 3.4L 1997-08/01
  • Porsche 996 C4 3.4L 1997-08/01
  • Porsche Cayman 2.7L 987C 2006-08
  • Porsche Cayman S 3.4L 987C 2005-08
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94

Diagram Ref No 2

What This Product Does:
  • Sealing the front oil pump assembly
  • Preventing transmission fluid leaks
  • Maintaining proper hydraulic pressure inside the gearbox
  • Protecting internal transmission components
  • Ensuring consistent automatic gear shifting

Symptoms Of Wear Or Failure:
  • Transmission fluid leaks at the front of the gearbox
  • ATF residue under the vehicle
  • Low transmission fluid levels
  • Slipping or delayed gear engagement
  • Unusual transmission noise
  • Transmission overheating

Why Replacement Matters:
  • Prevent transmission fluid leaks
  • Maintain proper hydraulic pressure
  • Ensure smooth and reliable gear changes
  • Protect internal transmission components
  • Avoid costly gearbox repairs or failure



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

99639701000
99639701000

The product you are viewing cross references to these numbers
DISPLAYING 1 to 12 (of 12 products)
Also found on these pages
About Gasket Sets / Gaskets / Seals / Lock Nuts

Porsche Gearbox & Transmission Gasket Sets, Gaskets, Seals & Lock Nuts | Precision Sealing for Drivetrain Integrity

Gaskets, seals, and lock nuts are essential components that protect your Porsche’s gearbox or transmission system from fluid leaks, contamination, and vibration. These parts maintain internal pressure, ensure proper lubrication, and secure vital fasteners under extreme temperature and torque conditions — all of which are crucial for reliable, long-term gearbox performance.

At Design911, we supply premium gearbox gasket sets, individual seals, and locking hardware engineered to match or exceed original performance specifications. Manufactured from advanced composite, rubber, and metal-reinforced materials, our gasket kits ensure a perfect fit and dependable sealing across all Porsche models.

Whether you’re performing a gearbox rebuild, addressing a transmission leak, or refreshing driveline components, our gaskets, seals, and lock nuts deliver precision, reliability, and protection against future wear or oil loss.

What Do Gearbox Gaskets, Seals & Lock Nuts Do?

Each component plays a vital role in maintaining your Porsche’s gearbox integrity and smooth power delivery.

Core Functions:

  • Gaskets: Create a reliable seal between mating gearbox surfaces to prevent oil leaks.       
  • Seals: Prevent lubricant loss around rotating shafts and input/output housings.
  • Lock Nuts & Fasteners: Secure transmission components under high vibration and torque loads.

Together, they preserve internal oil pressure, reduce wear on moving parts, and ensure consistent transmission performance in both road and track conditions.

Why Do Gearbox Gaskets, Seals & Lock Nuts Fail or Wear Out?

Over time, these components endure significant thermal cycling, pressure changes, and exposure to fluids. Age and wear lead to material degradation and potential leaks.

Common Causes of Failure Include:

  • Gasket shrinkage, cracking, or compression fatigue.
  • Seal hardening from heat or exposure to aggressive fluids.
  • Damaged or corroded sealing surfaces during service.
  • Lock nuts loosening due to vibration or over-torqueing.
  • Improper installation or reusing old sealing materials.

Failure of any of these parts can result in oil leaks, gearbox noise, or internal component damage — all of which compromise drivetrain performance and reliability.

Why Replace Your Porsche Gearbox Gaskets, Seals & Lock Nuts?

Replacing worn or leaking gaskets and seals prevents oil loss and transmission failure, while fresh locking hardware ensures secure, vibration-proof assembly. During any gearbox or differential service, new gaskets and seals should always be installed to guarantee long-term reliability.

Key Benefits:

  • Prevents oil leaks and contamination of internal components.
  • Maintains gearbox pressure and correct lubrication levels.
  • Reduces noise, vibration, and harshness (NVH).
  • Protects against long-term wear and gear damage.
  • Precision fitment for Porsche manual, automatic, and PDK systems.
  • Ideal for gearbox rebuilds, maintenance, and performance upgrades.

Replacing these parts as a complete kit ensures every sealing point and fastener is restored to optimal condition — protecting your investment and performance.

Highlights

  • Complete Porsche gearbox gasket sets, seals, and lock nut kits.
  • Manufactured from high-quality materials for strength and longevity.
  • Designed for perfect fitment and superior oil retention.
  • Resistant to heat, pressure, and transmission fluid degradation.
  • Suitable for Porsche 911, Cayman, Boxster, Panamera, and more.
  • Essential for gearbox servicing, rebuilds, and leak prevention.       

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