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Inlet Manifold
By OE Match
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Flat intake manifold gasket it used between the intake manifold runners and the cylinder head on Porsche flat-six engines. Each gasket seals one intake port pair; a complete engine typically uses six of them.
Fits:
Porsche 911 1974 - 1983 - 6pcs required
Diagram ref no 7.
This set of six intake manifold gaskets provides a complete gas-tight seal between the intake manifold and cylinder heads, ensuring that all air entering the engine follows the correct metered path through the CIS or fuel-injection system. By eliminating air leaks at the manifold flanges, these gaskets help maintain proper air–fuel mixture, support smooth idle and drivability, and prevent lean conditions that can raise combustion temperatures.
Over time, manifold gaskets naturally harden, shrink or crack from heat cycles, fuel vapour exposure and age. When this happens, the engine may draw in unmetered air, resulting in rough idle, poor cold running, lean mixture symptoms, hesitation or flat spots during acceleration. Vacuum leaks also make tuning more difficult and can lead to increased fuel consumption. Replacing old gaskets with a fresh set of six restores full sealing integrity, stabilises idle and mixture control, and helps the engine operate as intended.
When to replace
You should replace the full set of inlet manifold gaskets if:
• You are rebuilding or refreshing the top end of the engine.
• There are suspected vacuum leaks around the intake manifold.
• The engine shows rough idle, hunting, or lean-related symptoms not traced to other components.
• The existing gaskets are cracked, brittle, or oil/fuel soaked.
• You are upgrading, servicing or adjusting the CIS / intake system on a classic 911 or 930.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011019716
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Flat intake manifold gasket it used between the intake manifold runners and the cylinder head on Porsche flat-six engines. Each gasket seals one intake port pair; a complete engine typically uses six of them.
Sold each, typically 6 required per car.
Fits:
Porsche 911 1974 - 1983 - 6pcs required
Diagram ref no 7.
This gasket provides a gas-tight seal at the intake manifold interface so that all air entering the engine passes through the intended metered path (CIS / fuel injection system).
By preventing air leaks at the manifold flange, it:
• Maintains correct mixture and idle quality
• Supports smooth throttle response and drivability
• Helps avoid lean conditions that can lead to higher combustion temperatures.
Over time, intake manifold gaskets can harden, shrink or crack due to heat cycles, fuel vapour and age. When they fail:
• The engine may draw in unmetered air, causing rough idle, poor cold running or lean mixture.
• You can experience hesitation, popping, or flat spots under acceleration.
• Vacuum leaks can make tuning and diagnostics difficult and may increase fuel consumption.
Replacing old gaskets with fresh restores correct sealing, stabilises idle and mixture, and helps the engine run as intended.
When to replace
Consider replacing the inlet manifold gaskets if:
• You’re rebuilding or refreshing the top end of the engine.
• There are suspected vacuum leaks around the intake manifold.
• The engine has rough idle, hunting, or lean codes/symptoms not traced to other components.
• The original gaskets are visibly cracked, brittle, or oil/fuel soaked.
• You are converting, upgrading or servicing the CIS / intake system on a classic 911 or 930.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93011019716
The product you are viewing cross references to these numbers
OEMatch Inlet Manifold — Flow, Response, Refinement
OEMatch supplies inlet manifold items for Porsche models, combining replacement manifolds, gaskets and related seals with an extensive cross-reference catalogue to support fitment and servicing. These products are selected to help restore consistent airflow and engine responsiveness where an ageing or damaged inlet manifold affects performance.
Available Types
- Cast aluminium inlet manifolds
- Composite/plastic inlet manifolds
- Manifold gaskets and seal kits
Understanding OEMatch Inlet Manifold
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original inlet manifold.
OE (Original Equipment) refers to parts matching original specifications for the inlet manifold and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM inlet manifold engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
The inlet manifold itself distributes intake air from the throttle body to each cylinder and helps balance pressure and flow for smooth idling and consistent combustion across the rev range.
Benefits Include
- Restores balanced airflow to each cylinder for stable combustion
- Improves throttle response and idle quality
- Replaces degraded seals to reduce vacuum leaks and emissions
Why Inlet Manifold Wear and Fail
- Heat cycling and material fatigue leading to cracks or leaks
- Carbon and oil buildup restricting runners and passages
- Deterioration of gaskets and seals allowing unmetered air ingress
The Importance of Replacing with OEMatch Inlet Manifold
A leaking or damaged inlet manifold can cause uneven air delivery, rough running and reduced efficiency. Replacing a compromised manifold restores consistent airflow balance, helps protect engine components from lean or overly rich running conditions and supports predictable throttle response for everyday driving and inspection tests.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Available with compatible gasket and seal kits for a complete repair
- Manufactured from materials chosen for heat resistance and sealing longevity
