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- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Inlet Manifold Hose - 15 x 3.5mm
High-quality 15x3.5mm inlet manifold hose designed for Porsche 911 Turbo models, supporting correct airflow within
the intake system.
Fits:
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Diagram ref no 37
This hose connects key intake components, ensuring proper air delivery to the engine and maintaining the balance required for optimal turbocharged performance. Designed to withstand engine bay heat and pressure, it plays a critical role in maintaining stable engine operation and efficiency.
Manufactured to OEM specifications, this hose ensures precise fitment, durability, and reliable performance, making it ideal for maintenance, repair, or restoration of Porsche 911 Turbo intake systems.
Key Features
• 15x3.5mm inlet manifold hose
• Suitable for Porsche 911 Turbo models
• Part number 99918128450
• Designed for air intake system applications
• Ensures secure and leak-free airflow
• Resistant to heat and engine bay conditions
• OEM-style fit and performance
Function and Purpose
This inlet manifold hose is an important part of the intake system.
It helps to:
• Deliver air efficiently to the engine
• Maintain correct air pressure within the intake system
• Support turbocharger and engine performance
• Prevent air leaks that affect running conditions
• Ensure stable and efficient combustion
Why Replace Intake Hoses
Over time, intake hoses can degrade due to heat and pressure.
Common issues include:
• Cracking or splitting
• Air leaks affecting engine performance
• Hardening and loss of flexibility
• Reduced intake efficiency
Replacing worn hoses restores proper airflow and engine performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99918128450
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 928 S4 (1987 to 1991)
Porsche 928 GT (1989 to 1991)
Porsche 928 GTS (1992 to 1995)
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811063300
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Plenum to MAFS Connector.
Fits:
Porsche 928 1987-1991
Porsche 928 1993-1995
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811017409
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
This sleeve joins intake components and prevents unmetered air leaks. A proper seal supports correct air-fuel mixture control, smooth running, and reliable performance.
Sold individually, 6 or 8 required per vehicle - depending on vehicle model
Fits:
Porsche 911 SC 1978 - 1983
Porsche 928 4.5L 1978 - 1979 with Engine type: 2801
Porsche 928 4.7L 1983 - 1984
with Engine type: 2819, 2820 * USA, Canada, Japan models Only
Diagram ref no 10 (for 911) or 37 (for 928)
Installed between intake pipes/ducting components, the sleeve absorbs vibration and minor movement while keeping the intake tract sealed. It helps protect against vacuum leaks that can cause rough idle, hesitation, or fault codes.
Aging intake rubber can crack, harden, or split from heat and oil vapours, leading to air leaks and unstable engine running. Replacing worn sleeves restores proper sealing, helping maintain correct airflow measurement and drivability.
When to replace:
• Visible cracks, splits, or swelling in the rubber
• Loose fitment or air leaks at the coupling points
• Rough idle, hesitation, or lean-running symptoms (after inspection)
• During intake service or when replacing adjacent intake hoses/boots
• Excessive hardening or deterioration from heat/oil exposure
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92811015801
The product you are viewing cross references to these numbers