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Inlet Manifold
By OE Match
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)
The set includes 12 intake manifold gasket pieces - enough to replace all applicable intake sealing locations when performing major engine or intake work on early Porsche. Intake manifold gaskets form the seal between the cylinder head and intake manifold. They prevent unmetered air leaks, maintain engine vacuum, and help ensure that the correct air-fuel mixture enters each cylinder.
SET OF 12
Fits:
Porsche 911 / L / TU / T
Porsche 911 T / 911 T-V
Porsche 914-6 1970 - 1976
Diagram ref no 10
Function When installed correctly, these gaskets:
• Seal the intake manifold to the cylinder head to prevent air and vacuum leaks
• Maintain consistent airflow into the intake ports
• Support stable idle and throttle response
• Reduce risk of detonation, poor fuel economy, and rough running.
Over time, intake gaskets may become brittle or compressed from heat cycles and age. Replacing them - especially in sets during rebuild or service - helps restore proper sealing and engine efficiency.
Intake manifold gaskets are critical for proper engine breathing and vacuum integrity. Worn, hardened, or leaking gaskets can cause:
• Vacuum leaks and unstable idle
• Hesitation or stumbling under acceleration
• Poor fuel economy
• Increased exhaust emissions
• Difficulty tuning carbureted or fuel-injected systems.
Replacing these gaskets in a complete set ensures all surfaces are sealed correctly, improves engine smoothness, and reduces the risk of running issues often misdiagnosed as other mechanical problems.
When to Replace. It’s recommended to replace intake manifold gaskets when:
• Performing major engine service or a cylinder head rebuild
• Intake manifold has been removed or loosened
• You notice hissing sounds or rough idle
• Vacuum gauge shows unstable readings
• Rubber/composite gasket surfaces show cracks, compression set, or distortion
• Engine has high mileage or long service life
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110839104
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 914 (1970-1976)
Fits:
Porsche 914-4 1.7L 1970-73
Porsche 914-4 1.8L 1974-76
Porsche 914-4 2.0L 1973-76
Diagram ref. 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
022129707F
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
