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Your Vehicle  //  Porsche  //  993 (911) (1994-1998)  //  Any
Porsche993 (911) (1994-1998)Engine Rebuild PartsAir Intake & Injection

Gaskets

Gaskets

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DISPLAYING 1 to 5 (of 5 products)
Air Intake Duct Gasket. Porsche 993 - 99321127001
3
Air Intake Duct Gasket. Porsche 993
Special Order item
99321127001
Product Information
Product Information
Air Intake Duct Gasket. Located at the top of the intake trumpet.

Fits:
Porsche 993 1995-98

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Diagram ref no 3

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99321127001
99321127001

The product you are viewing cross references to these numbers
Air intake gasket. Porsche 993 1995>> - 99311026304, 99311026301
4
Air intake gasket. Porsche 993 1995>>
Special Order item
99311026304
Product Information
Product Information
Air intake gasket.

Fits:
Porsche 993 1995>>
Engine type: 6420 / 6421 / 6422 / 6423 / 6424

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Diagram ref no 16

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Related, superseded, cross reference or alternative numbers for comparison.

99311026304
99311026304
99311026301

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Air mass sensor to air filter housing seal. Porsche 993 - 99311014701
3
Air mass sensor to air filter housing seal. Porsche 993
Special Order item
99311014701
Product Information
Product Information
Air mass sensor to air filter housing seal.

Fist:
Porsche 993 1995-98

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Diagram ref no 5

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Related, superseded, cross reference or alternative numbers for comparison.

99311014701
99311014701

The product you are viewing cross references to these numbers
Intake manifold gasket. Porsche 964 / 993 - 99311071301, 96411071300, 96411071301, 40-77522-10, 407752210, 526.730
2
Intake manifold gasket. Porsche 964 / 993
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Related, superseded, cross reference or alternative numbers for comparison.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
Intake manifold gasket. Porsche 964 / 993 - 18754, 99311071301, 96411071300, 96411071301, 40-77522-10, 407752210, 526.730
2
Intake manifold gasket. Porsche 964 / 993
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
DISPLAYING 1 to 5 (of 5 products)
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About Gaskets

Air Inlet Engine Gaskets – Precision Sealing for Optimal Porsche Performance

Air inlet engine gaskets are crucial sealing components within your Porsche’s intake system. They ensure an airtight connection between the intake manifold, throttle body, and other air passages, preventing unmetered air from entering the engine. By maintaining proper air pressure and flow, these gaskets help your Porsche deliver smooth performance, efficient combustion, and consistent power output.

At Design911, we supply a complete selection of genuine and high-quality air inlet gaskets for various Porsche models, including 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each gasket is designed for precise fitment, high heat resistance, and superior durability — ensuring reliable performance and long-lasting sealing under all driving conditions.

What Do Air Inlet Engine Gaskets Do?

Air inlet gaskets serve as a critical barrier that ensures only properly metered air enters your Porsche’s engine. Their functions include:

  • Sealing joints between intake components to prevent air leaks.
  • Maintaining correct air-fuel ratios for efficient combustion.
  • Preventing contamination from oil, dust, and debris.
  • Ensuring stable engine idle and performance by regulating airflow integrity.

A high-quality gasket keeps your Porsche’s intake system perfectly balanced, contributing to smooth throttle response, better fuel efficiency, and reliable power delivery.

Why Do Air Inlet Engine Gaskets Fail?

Exposure to extreme heat, pressure, and vibration gradually wears down air inlet gaskets. Over time, they can lose elasticity and sealing capability. Common causes of failure include:

  • Thermal expansion and contraction causing cracks or deformation.
  • Material fatigue from continuous heat cycling.
  • Oil or coolant contamination degrading gasket integrity.
  • Improper installation or over-torquing during servicing.
  • Age-related wear and drying of gasket material.

Symptoms of a failing air inlet gasket include rough idle, vacuum leaks, hissing noises, poor fuel economy, or a check engine light related to air-fuel imbalance.

Why Replace a Faulty Air Inlet Engine Gasket?

A worn or leaking air inlet gasket can allow unmetered air into the engine, disrupting combustion and reducing performance. Replacing it restores proper air sealing, improving efficiency and reliability while preventing potential damage to intake components.

Benefits of replacement include:

  • Restored airtight sealing for optimal engine performance.
  • Smoother idle and improved throttle response.
  • Enhanced fuel efficiency and reduced emissions.
  • Long-term reliability with manufacturer-quality materials.

All gaskets from Design911 are made from premium-grade composites or multi-layer materials, designed to withstand heat, pressure, and chemical exposure — ensuring consistent sealing and performance for every Porsche model.

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