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Gaskets & Sets
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
110.72 x 3.53

Fits:
Porsche 993 Carrera RS 3.7L 1995-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970502341
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Often referred to as a rubber seal ring or O-ring, it is designed to fit precisely in its designated groove where the rotating or stationary component meets a housing, providing a durable and leak-resistant interface.
Sold each.
Fits:
Porsche 993 Carrera RS 3.7L 1995 - 1998
Diagram ref no 4
The sealing ring helps prevent oil, coolant or other fluids from leaking between closely fitted engine/transmission surfaces. It forms a compression seal around shafts or bores where fluid containment is critical. A properly functioning seal keeps fluids contained, minimizes the risk of contamination, and preserves lubrication where it’s needed most - such as around pistons, cylinders, or fluid passages.
• Application: Engine or drivetrain sealing ring used in cylinder base or other fluid interface points where a precise rubber seal is required to maintain fluid containment and mechanical integrity.
Replace this sealing ring if you notice:
• Visible fluid leaks around engine or transmission joint areas
• Low oil or fluid levels without external explanation
• During engine or transmission removal and service
• When original seals show visible wear, cracking, or hardening
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970502341
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Sold each.

Fits:
Porsche 996 Turbo 2001-05
Porsche 997.1 Turbo 2007-09
Porsche 997.2 Turbo 2010-13
Porsche 996 GT3 2000-05
Porsche 997 GT3 2007-11
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970739440
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Inner Diameter: 110 mm,
Outer diameter: 115 mm,
Thickness: 3 mm,

Fits:
Porsche 996 Turbo 2001-05
Porsche 997.1 Turbo 2007-09
Porsche 997.2 Turbo 2010-13
Porsche 996 GT3 2000-05
Porsche 997 GT3 2007-11
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970739440
The product you are viewing cross references to these numbers
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05

Fits:
Porsche 911 (996) 3.6L S / Turbo / GT2 2001-2005
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610119373
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04

Fits:
Porsche 911 (996) Turbo & GT2 2001-2005
Porsche 911 (996) GT3 1999-2005
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610119373
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04

Fits:
Porsche 911 (996) Turbo & GT2 2001-2005
Porsche 911 (996) GT3 1999-2005
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610119373
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Engine re-build complete gasket set, INCLUDING head gaskets.
This kit is made with very high quality gaskets, and are complete gasket sets to complete the job.
The OE Match Engine Gasket Set is a premium-quality replacement sealing kit designed to restore the integrity of compatible Porsche engines during repairs, rebuilds or major servicing. Manufactured to OE specifications for fit, material quality and durability, this comprehensive gasket set provides the essential seals required to prevent oil, coolant and compression leaks while maintaining optimum engine performance and reliability.
Fits:
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Manufactured using premium-quality gasket materials selected for their resistance to heat, pressure, engine oil, coolant and fuel, the components are engineered to withstand the demanding operating conditions of modern and classic Porsche engines. Precision-cut for accurate OE-style fitment, the gasket set helps ensure reliable sealing across multiple engine assemblies, making it ideal for professional engine rebuilds, overhauls and preventative maintenance.
What This Product Does:
- Provides reliable sealing between critical engine components.
- Prevents oil, coolant and compression leaks.
- Maintains correct engine compression and efficiency.
- Supports proper lubrication and cooling system operation.
- Protects the engine from contamination and fluid loss.
- Restores factory sealing performance during engine repairs.
- Includes essential gaskets for comprehensive engine servicing.
- Forms an integral part of the engine sealing system.
Symptoms Of Wear Or Failure:
- Engine oil leaks.
- Coolant leaks.
- Overheating caused by coolant loss.
- White exhaust smoke indicating coolant entering the combustion chamber.
- Low engine compression.
- Mixing of oil and coolant.
- Visible gasket deterioration during servicing.
- Loss of engine performance.
- Increased oil consumption.
- Persistent fluid leaks after component removal or rebuilds.
Why Replacement Matters:
- Engine gaskets operate under extreme temperatures, high pressures and continual thermal expansion and contraction. Over time, gasket materials can harden, compress or deteriorate, reducing their ability to maintain an effective seal between engine components.
- Failing gaskets can allow oil, coolant or combustion gases to escape, resulting in reduced engine performance, overheating, fluid contamination and accelerated internal engine wear. During any engine rebuild or major repair, replacing all relevant gaskets is essential to ensure long-term reliability and avoid repeat labour.
- Replacing worn gaskets with the OE Match Engine Gasket Set restores the engine's sealing integrity and helps ensure reliable operation throughout the entire engine assembly. Manufactured to OE standards using premium sealing materials, this complete gasket set provides factory-style fitment, long-lasting durability and dependable performance, making it the ideal solution for Porsche engine rebuilds, servicing and restoration projects.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
999100M9601
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Engine re-build complete gasket set, INCLUDING head gaskets This kit is made with very high-quality gaskets, and are complete gasket sets to complete the job.
The OE Match Engine Gasket Set is a premium-quality replacement sealing kit designed to restore the sealing integrity of compatible Porsche engines during repairs, rebuilds and major servicing. Manufactured to OE specifications for fit, material quality and durability, this comprehensive gasket set contains the essential gaskets and seals required to prevent oil, coolant and compression leaks while maintaining optimum engine performance and long-term reliability.
Fits:
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Manufactured from premium-quality composite gasket materials, high-temperature elastomers and precision-engineered sealing components, the kit is designed to withstand extreme engine temperatures, high combustion pressures and continual exposure to engine oil and coolant. Precision-cut for direct OE-style installation, each gasket provides an accurate fit to ensure dependable sealing across critical engine assemblies, making the kit ideal for professional engine rebuilds and preventative maintenance.
What This Product Does:
- Provides reliable sealing between critical engine components.
- Prevents oil, coolant and combustion gas leaks.
- Maintains correct engine compression and efficiency.
- Supports proper lubrication and cooling system operation.
- Protects the engine from contamination and fluid loss.
- Restores factory sealing performance during engine repairs.
- Supplies essential gaskets for comprehensive engine servicing.
- Forms an integral part of the engine sealing system.
Symptoms Of Wear Or Failure:
- Engine oil leaks.Coolant leaks.
- Loss of engine compression.
- Engine overheating caused by coolant loss.
- White exhaust smoke indicating coolant entering the combustion chamber.
- Oil and coolant contamination.
- Reduced engine performance.
- Increased engine oil consumption.
- Visible gasket deterioration during engine servicing.
- Persistent fluid leaks following engine disassembly.
Why Replacement Matters:
- Engine gaskets are subjected to constant thermal cycling, high internal pressures and prolonged exposure to oil, coolant and combustion gases. Over time, gasket materials naturally compress, harden or deteriorate, reducing their ability to maintain an effective seal between engine components.
- Failing gaskets can lead to fluid leaks, loss of compression, overheating and contamination of vital engine systems. Continued operation with damaged gaskets can accelerate engine wear and result in expensive repairs. During any major engine repair or rebuild, replacing all sealing components is essential to ensure reliable long-term performance and avoid repeat labour.
- Replacing worn gaskets with the OE Match Engine Gasket Set restores the engine's sealing integrity and helps maintain reliable operation throughout the entire engine assembly. Manufactured to OE standards using premium sealing materials, the 999100M9603 kit provides factory-style fitment, long-lasting durability and dependable performance, making it the ideal solution for Porsche engine rebuilds, servicing and restoration projects.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
999100M9603
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Fits:
Porsche Porsche 996 Carrera 3.4L
Please note this kit does not include Engine Gasket - Cylinder 1-3 or 4-6. these must be purchased separately.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610090500
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Fits:
Porsche Porsche 996 Carrera 3.4L
Please note this kit does not include Engine Gasket - Cylinder 1-3 or 4-6. these must be purchased separately.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610090500
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
Fits:
Porsche 986 Boxster 2.5L 1997-2004
Porsche 996 3.4L
Please note this kit does not include Engine Gasket - Cylinder 1-3 or 4-6. these must be purchased separately.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98610090500
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
1 per engine.

Fits:
Porsche 996 C2 / C4 3.4L 1998-01 (M96.01/02/04)
This product supersedes Porsche's old part numbers:
- 99610427005 (1-3 Cyl.) / 99610426900 (4-6 Cyl.)
Click 'Zoom in' for large parts diagram.
Diagram ref no 24.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9961042
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
1 per engine.

Fits:
Porsche 996 C2 / C4 3.4L 1998-01 (M96.01/02/04)
This product supersedes Porsche's old part numbers:
- 99610427005 (1-3 Cyl.) / 99610426900 (4-6 Cyl.)
Click 'Zoom in' for large parts diagram.
Diagram ref no 24.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9961042
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
2 per engine.

Fits:
Porsche 996 Turbo / GT2 2005-08
Porsche 996 GT3 2000-05
Porsche 997 MKI Turbo / GT2 2007-09 (M97.70)
Porsche 997 MKII Turbo 2010-12 (M97.70)
Porsche 997 MKII GT2
Porsche 997 MKII GT2RS
Porsche 997 GT3 2007-11 (M97.76)
This product supersedes Porsche's old part numbers:
- 99610417071
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
2 per engine.

Fits:
Porsche 996 Turbo / GT2 2005-08
Porsche 996 GT3 2000-05
Porsche 997 MKI Turbo / GT2 2007-09 (M97.70)
Porsche 997 MKII Turbo 2010-12 (M97.70)
Porsche 997 MKII GT2
Porsche 997 MKII GT2RS
Porsche 997 GT3 2007-11 (M97.76)
This product supersedes Porsche's old part numbers:
- 99610417071
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
-
replacement engine: without drive plate tiptronic, without flywheel manual transmission, without compressor for 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 101-00
-
crankcase 996 Carrera 2/4/4S M96.01/02/03/04 1998-05 101-05
-
crankshaft 996 Carrera 2/4/4S M96.01/02/03/04 1998-05 102-00
-
cylinder head 996 CARRERA 2/4 M96.01/02/04 UPTO 2001 103-00
-
cylinder head 996 CARRERA 2/4/4S M96.03 2002 ONWARDS 103-01
-
oil pump 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 104-00
-
water pump, thermostat housing 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 105-00
-
intake distributor 996 CARRERA 2/4/4S M96.01/02/03/04 1998-05 107-10
-
cylinder with piston (see workshop manual) 996 TURBO 2001-05 102-05
-
cylinder head 996 TURBO 2001-05 103-00
-
cylinder with piston 996 GT3-1 M96.76 2000-01 and 996 GT3-1/GT3 RS M96.79 2004-05 102-05
Engine Gaskets & Gasket Sets – Precision Sealing for Porsche Engines
Engine gaskets are vital components that ensure your Porsche’s engine operates efficiently and leak-free. Positioned between key engine surfaces such as the cylinder head, intake manifold, and oil pan, gaskets maintain a perfect seal against high temperatures, pressures, and fluids.
At Design911, we offer a comprehensive range of engine gaskets, seals, and complete gasket kits for Porsche models of every generation. Each gasket is crafted from high-quality composite, metal, or elastomer materials to withstand the extreme conditions of high-performance engines — ensuring optimal sealing, reduced oil and coolant leaks, and consistent compression.
Whether you’re rebuilding a classic 911 flat-six or servicing a modern turbocharged Porsche engine, our manufacturer-quality gaskets and complete kits guarantee reliability, performance, and peace of mind.
What Do Engine Gaskets and Gasket Sets Do?
Gaskets play a critical role in ensuring that various engine systems — combustion, lubrication, and cooling — remain properly sealed.
Core Functions:
- Prevent
leaks of oil, coolant, air, and combustion gases.
- Maintain
compression between the engine block and cylinder head.
- Ensure
efficient combustion and proper engine pressure balance.
- Protect internal components from cross-contamination of fluids.
A properly sealed engine not only improves performance and efficiency but also prevents costly long-term damage.
Why Do Gaskets Fail?
Despite their durability, gaskets naturally degrade over time due to extreme heat cycles, pressure variations, and material fatigue.
Common Causes of Gasket Failure Include:
- Overheating,
causing warping or breakdown of the gasket material.
- Improper
installation or torqueing during assembly.
- Aging
materials that harden or crack with use.
- Chemical
degradation from oil or coolant exposure.
- Uneven pressure or engine vibration, leading to micro-leaks.
Typical symptoms of gasket failure include oil or coolant leaks, reduced compression, overheating, or visible residue at gasket joints.
Why Replace with Precision-Engineered Gaskets and Kits?
Replacing worn or leaking gaskets is essential to maintain proper engine compression, prevent contamination, and restore overall reliability. Our direct-fit gasket sets and kits are designed to meet or exceed Porsche engineering standards, providing complete sealing solutions for rebuilds and maintenance.
Key Benefits:
- Restores proper sealing and compression integrity.
- Prevents oil and coolant leaks for cleaner performance.
- Enhances efficiency and reliability under load.
- Manufactured from high-grade, heat- and pressure-resistant materials.
- Available
as individual gaskets or complete kits for full rebuilds.
- Direct-fit compatibility for a wide range of Porsche models.
Our gasket sets are ideal for engine rebuilds, overhauls, and preventive maintenance, ensuring long-term dependability and peak performance.
Highlights:
- Complete Porsche engine gasket kits and individual components.
- Precision-engineered for exact sealing performance.
- Constructed from advanced composite, metal, and elastomer materials.
- Resistant to heat, pressure, and chemical exposure.
- Suitable for classic air-cooled and modern water-cooled engines.
- Ensures leak-free operation and lasting reliability.