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Your Vehicle  //  Porsche  //  993 (911) (1994-1998)  //  Any

Gaskets & Sets

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DISPLAYING 17 to 32 (of 40 products)
1 2 3
96410518101/8
Product Information
Product Information
Engine chain cover gasket. Fits: Left and Right side

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Related, superseded, cross reference or alternative numbers for comparison.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
96410518101
96410518200
96410518201
471.200

The product you are viewing cross references to these numbers
Special Order item
99310519300
Product Information
Product Information
Engine chain cover gasket. Sold each.

Fits:
Porsche 993 1994-97

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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Related, superseded, cross reference or alternative numbers for comparison.

99310519300
99310519300
31-029382-00
3102938200

The product you are viewing cross references to these numbers
99310519300/1
Product Information
Product Information
Engine chain cover gasket.

Fits:
Porsche 993 1994-97

Click 'Zoom in' for large parts diagram.
Diagram ref no 6

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Related, superseded, cross reference or alternative numbers for comparison.

99310519300
99310519300
70-29003-10
31-029382-00
3102938200

The product you are viewing cross references to these numbers
93010090104/1
Product Information
Product Information
Engine crankcase gasket set.

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Related, superseded, cross reference or alternative numbers for comparison.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
93010090104
105.571

The product you are viewing cross references to these numbers
Special Order item
93010090104
Product Information
Product Information
Engine crankcase gasket set.

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Related, superseded, cross reference or alternative numbers for comparison.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
93010090104

The product you are viewing cross references to these numbers
93010090104/2
Product Information
Product Information
Engine crankcase gasket set.

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Related, superseded, cross reference or alternative numbers for comparison.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
93010090104

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Special Order item
99310090200
Product Information
Product Information
Engine head gasket set.

Fits:
Porsche 993 1994-97

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

99310090200
99310090200
99310090200
02-29154-01
022915401

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99310090200/1
Product Information
Product Information
Engine head gasket set.

Fits:
Porsche 993 1994-97

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

99310090200
99310090200
02-29154-01
022915401

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Special Order item
99311325851
Product Information
Product Information
Gasket for air injection cut-off valve.

Fits:
Porsche 993 Turbo
Porsche 996 Turbo

Click 'Zoom in' for large arts diagram.
Diagram ref no 20

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

99311325851
99311325851
632.710

The product you are viewing cross references to these numbers
99311325851/1
Product Information
Product Information
Gasket for air injection cut-off valve.

Fits:
Porsche 993 Turbo
Porsche 996 Turbo

Click 'Zoom in' for large arts diagram.
Diagram ref no 20

Related reference numbers
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99311325851
99311325851
632.710

The product you are viewing cross references to these numbers
F/HG3400H/300M
Product Information
Product Information
Hylomar Gasket 3400 is a modified anaerobic curing, flexible sealant designed to become a Formed in Place (FIP) Gasket when cured. The cured compound has good temperature resistance and high resistance to fretting. The cure is initiated when the compound is in contact with metal ions and in anaerobic conditions. The cure rate and final strength is dependent on the metals being joined and the temperature at which the component is used. The heat generated by a running engine will accelerate the cure.

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

Special Order item
99311071301
Product Information
Product Information
Intake manifold gasket. Sold each.

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
99311071301
96411071300
96411071301
40-77522-10
407752210
526.730

The product you are viewing cross references to these numbers
99311071301/1
Product Information
Product Information

The OE Match intake manifold gasket for Porsche 964 / 993 seals a joint within the engine’s intake assembly, helping prevent unwanted air entering around the connection. 

Fits

  • Porsche 964 1989-94
  • Porsche 993 1995-98

    Check fitment for your specific vehicle (model, year, engine) before ordering.

    Diagram ref no 13

    This product supersedes Porsche's old part numbers: - 96411071300 - 96411071301

    Required Quantity

Six sealing rings are required for the applicable intake distributor assembly.

What Is This Part?

This is a sealing ring used in the intake manifold and intake distributor arrangement. The intake assembly carries air towards the engine’s cylinders, and its joints need to remain sealed so air follows the intended route. The ring seals the connection between adjoining intake components when correctly seated and assembled. It is relevant to intake leak repairs and work that involves separating the affected joint.

What Does This Part Do?

  • Seals the intake joint: Closes the gap between the mating intake components.
  • Restricts unwanted air entry: Helps prevent air bypassing the intended intake path through a leaking connection.
  • Supports mixture control: A sealed intake avoids an additional air leak that could interfere with fuelling.
  • Reseals a disturbed connection: Provides a replacement sealing interface when the existing ring is damaged or unsuitable for refitting.

    Why Replace This Part?

Age, repeated heating and cooling, or damage during removal can leave an intake sealing ring unable to seat correctly. A leaking joint can admit unwanted air and contribute to rough idling or hesitation. Replacement is appropriate when inspection or leak testing identifies a fault at this connection.

When the intake is dismantled, check the ring and its seating surfaces before reassembly. A new seal will not correct a cracked housing, damaged seating face or poorly aligned connection, so these should be addressed at the same time.

When to Replace This Part?

  • Visible damage: The ring is split, cut, distorted or has been pinched during fitting.
  • Poor seating: The existing ring no longer sits correctly in its intended position.
  • Confirmed leakage: An intake leak test identifies air escaping at the sealed joint.
  • Running concerns: Rough or hunting idle, hesitation or hissing prompts inspection of the intake seals, hoses and connections.
  • During dismantling: Replace a disturbed ring if its condition makes a dependable seal doubtful.

    Where Is This Part Fitted?

Location: Within the intake manifold and intake distributor assembly in the rear engine compartment, at the mating intake connection. Confirm the precise joint against the engine’s intake arrangement before dismantling.

FAQs

  • How can an intake leak be checked? A controlled smoke test can help locate leakage. Inspect adjoining hoses, sleeves and clamps as well as the gasket joint.
  • Why might a replacement gasket still leak? Contamination, damaged mating surfaces, incorrect seating or an unsuitable gasket can prevent the joint sealing. Follow the applicable engine assembly procedure.

    Product Summary
  • Product: Intake manifold gasket / sealing ring.
  • Brand: OE Match.
  • Purpose: Seals the intake connection against unwanted air leakage.


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

99311071301
18754
99311071301
96411071300
96411071301
40-77522-10
407752210
526.730

The product you are viewing cross references to these numbers
Special Order item
00004330518
Product Information
Product Information
Loctite 574 Flange Sealant 50ml

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

00004330518
00004330518

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99970731440/1
Product Information
Product Information
Oil Thermostat O-Ring on Engine Case - 39.2 x 3mm
OE Match oil thermostat O-ring on engine case, 39.2 x 3mm, for Porsche 911, 914-6, 964, and 993 models. This replacement sealing O-ring helps prevent oil leaks at the engine-mounted thermostat area and supports correct engine oil system sealing.

Fits:
Porsche 911 - 1970 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1997
Porsche 914-6 - 1970 to 1976

Diagram ref no 34

The O-ring seals the joint between the oil thermostat and engine case. A correctly fitted seal helps prevent oil seepage, maintain oil system integrity, and keep the engine area clean and leak-free.

Functions
• Replaces the oil thermostat O-ring
•  Seals the thermostat connection on the engine case
•  Helps prevent engine oil leaks
•  Supports correct oil system sealing
•  Suitable for oil thermostat, engine case, or oil leak repair
•  Replaces hardened, flattened, cracked, swollen, or damaged O-rings
•  OE Match replacement for Porsche engine oil system service.

Why Replace This Part?
Oil thermostat O-rings can harden, flatten, crack, swell, or lose sealing ability due to heat, age, oil exposure, and pressure cycles. A worn or damaged O-ring may allow oil seepage around the thermostat area, causing oil residue, low oil level concerns, engine bay contamination, or failed inspection. Replacement is recommended whenever the thermostat is removed or oil leakage is present.

When to Replace This Part
•  Oil is leaking around the engine-mounted thermostat area
•  The oil thermostat has been removed or serviced
•  The O-ring is hard, flattened, cracked, swollen, or damaged
•  Engine case sealing work is being carried out
•  Oil seepage or oil residue is visible around the thermostat connection
•  Preventative replacement is required during engine service

Where it fits on the car
This O-ring fits at the oil thermostat connection on the engine case. It forms part of the engine oil sealing system on Porsche 911, 914, 964, and 993 models.

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

99970731440
99970731440
99970717240
99970105340
99970105350

The product you are viewing cross references to these numbers
99970715240/1
Product Information
Product Information
O-ring cylinder base 102 x 2. 
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
99970715240

The product you are viewing cross references to these numbers
DISPLAYING 17 to 32 (of 40 products)
1 2 3
Also found on these pages
About Gaskets & Sets

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.

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