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- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97

Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993-94
Porsche 993 1995-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 8
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
OE Match cylinder head gasket (sealing ring) designed to seal the joint between the cylinder and cylinder head on air-cooled Porsche 964 and 993 engines, helping maintain proper compression and preventing leakage at the head-to-cylinder interface.
Sold each, 6 required per vehicle.
Fits:
Porsche 964 C2 / C4 / Carrera RS 1991-94
M 62M 06837 >>
M 62M 52758 >>
Porsche 964 Turbo 3.6L 1993 - 1994
Porsche 993 1995 - 1998
Diagram ref no 8
The gasket forms a critical seal at the combustion boundary where extreme heat and pressure are present. It helps keep combustion gases contained, supports stable compression, and prevents leakage that can lead to poor running, overheating, or costly engine damage.
Function:
• Seals the cylinder-to-head interface under high temperature and pressure
• Helps maintain compression and consistent combustion efficiency
• Reduces risk of blow-by and hot gas leakage at the sealing surface
• Supports long-term reliability during rebuilds or top-end refreshes
A compromised head gasket/sealing ring can cause compression loss and leakage at the head-to-cylinder joint, often showing up as poor performance, combustion leakage symptoms, and increased thermal stress. Replacing these gaskets during top-end work ensures correct sealing and protects freshly machined sealing surfaces.
When to replace:
• During top-end rebuild, head removal, or cylinder service
• Compression/leak-down results indicate sealing issues
• Evidence of leakage at head-to-cylinder interface
• Engine is apart and gaskets show wear, heat marking, or deformation
• Preventative replacement when refreshing 964/993 top end
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410411520
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Fits:
Porsche 964 1989-94
Porsche 993
Click 'Zoom in' for large parts diagram.
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410518101
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97

Fits:
Porsche 964 1989-94
Porsche 993
Click 'Zoom in' for large parts diagram.
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410518101
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 911 1978-89
Porsche 964 1989-94
Porsche 993 1994-98
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010090104
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97

Fits:
Porsche 911 1978-89
Porsche 964 1989-94
Porsche 993 1994-98
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010090104
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010090104
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
Fits:
Porsche 964 C2 / C4 1989-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410090200
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93

Fits:
Porsche 964 C2 / C4 1989-94
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410090200
The product you are viewing cross references to these numbers
Typical Applications
Hylomar Gasket 3400 can be used as a gasketing compound between machined surfaces. It is ideal for sealing between mating faces on engines and transmission components where resistance to temperature and vibration are essential.
INSTRUCTIONS FOR USE
Hylomar Gasket 3400 should be applied to clean and dry surfaces, free of contamination such as oil or grease. The compound may be dispensed by hand from cartridge, concertina pack, or via a screen printing system. Once applied the joint should be assembled as soon as practical. Any excess compound can be easily wiped off external surfaces with a clean cloth soaked in Acetone or other suitable solvents.
Typical Physical Properties:
UNCURED PRODUCT
Composition: Methyl-Methacrylate
Colour: Yellow
Viscosity @ 25°C / Brookfield Spindle 6 @ 2.5rpm: 100,000cps
Specific Gravity @ 25°C: 1.10 g/ml
Solvent Content: None
Specific Gravity g/ml @ 25°C: 1.04
Flash Point: >100°C
Shelf Life: 1 Year @ 4° to 25°C
CURED PRODUCT
Handling Time: 40 minutes
Functional Cure Time: 4 – 6 hours
Full Cure Time : 24 – 72 hours
Shear Strength : 1.5 N/mm²
Mild Steel/Mild Steel BS 5350 Part C5
Aluminium/Aluminium BS 5350 Part C5
Temperature Range: -40° to 150°C
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96

Fits:
Porsche 964 1989-94
Porsche 993 1995-98
This product supersedes Porsche's old part numbers:
- 96411071300
- 96411071301
Click 'Zoom in' for large parts diagram.
Diagram ref no 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311071301
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96

Fits:
Porsche 964 1989-94
Porsche 993 1995-98
This product supersedes Porsche's old part numbers:
- 96411071300
- 96411071301
Click 'Zoom in' for large parts diagram.
Diagram ref no 13
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99311071301
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 914 (1970-1976)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
00004330518
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93

Fits:
Porsche 964 - 1989 to 1994
Click 'Zoom in' for large parts diagram.
Diagram ref no 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970190940
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fitted into the cylinder base sealing groove, the O-ring compresses between the cylinder and crankcase to form an oil-tight barrier that withstands temperature changes and engine vibration.
Sold each, 6 required per car.
Fits:
Porsche 964 Carrera 2 / Carrera 4 / RS / turbo 1989 - 1994
Porsche 993 Carrera 2 / Carrera 4 / Carrera S / Carrera 4S / turbo 1994 - 1997
Diagram ref no 2
This OE Match O-ring is manufactured to OE-equivalent dimensions and material properties to provide a reliable seal at the cylinder-to-case interface. Correct sealing here is essential to prevent oil seepage during heat cycles and maintain a clean, properly sealed engine during rebuild or maintenance work. Ideal for engine overhauls, reseals, or any time cylinders are removed, this direct-fit O-ring restores the original sealing function without modification.
Old O-rings can harden, flatten, or crack with age and heat, increasing the likelihood of oil seepage at the cylinder base. Replacing them during engine work helps ensure a proper reseal, reducing leaks and protecting surrounding components from oil contamination.
When to replace:
• During engine rebuilds or top-end work (cylinders removed)
• Any time cylinder bases are resealed
• Visible oil seepage at cylinder-to-case area
• High-mileage preventative reseal
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970715240
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970729340
The product you are viewing cross references to these numbers
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.