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- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
Manifold to Vacuum Limiter Air Hose – 15 x 24mm
Sold by the metre
High-quality manifold to vacuum limiter air hose
designed for Porsche 911 Turbo, 964 Turbo, and 924 Turbo
models, supplied per metre for precise fitment and flexible
installation.
Fits:
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
Diagram ref no 39
This hose connects the intake manifold to the vacuum limiter, playing a critical role in regulating vacuum pressure within the turbo system. Proper vacuum control is essential for maintaining boost stability, engine efficiency, and overall drivability in turbocharged Porsche engines.
Manufactured to OEM specifications, this hose ensures durability, flexibility, and resistance to heat and pressure, making it ideal for maintenance, repair, or restoration of Porsche turbo vacuum systems.
Key Features
• Manifold to vacuum limiter hose
• Suitable for Porsche 911 Turbo, 964 Turbo, and 924 Turbo
• Part number 99923900740
• Designed for turbo vacuum and boost control systems
• Sold per metre for custom length applications
• Resistant to heat and pressure
• Flexible and durable construction
• OEM-style fit and performance
Function and Purpose
This hose is a vital component within the turbo vacuum system.
It helps to:
• Connect intake manifold to vacuum limiter
• Regulate vacuum pressure within the turbo system
• Support boost control and engine stability
• Prevent vacuum leaks affecting performance
• Ensure efficient turbocharger operation
Why Replace Vacuum Hoses
Turbo vacuum hoses operate under demanding conditions.
Common issues include:
• Cracking or splitting
• Vacuum leaks reducing boost control
• Hardening and reduced flexibility
• Inconsistent engine performance
Replacing worn hoses restores proper vacuum regulation and engine efficiency.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99923900740
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
This oil line hose is a premium replacement oil line designed to replace the original Porsche hose that runs from the oil filter housing to the engine. Designed for classic Porsche 356 and 912 vehicles, this hose installs directly without modification, restoring correct oil flow and system integrity.
Fits:
Porsche 356 1950 - 1965
Porsche 912 1965 - 1969
Diagram ref no 24, 25.
The hose carries filtered engine oil from the oil filter housing to the engine block, maintaining proper oil flow and pressure to critical lubrication points throughout the engine.
Position: Engine oil delivery — between oil filter housing and engine
Function:
• Connects oil filter housing to engine for continuous oil delivery
• Maintains proper oil pressure under operating conditions
• Resists oil, heat, and vibration for long service life
A compromised oil line hose can lead to oil leaks, drop in oil pressure, and inadequate lubrication, which can accelerate engine wear or lead to severe damage. Using a correct OE Match hose ensures reliable oil flow and helps preserve engine health and longevity.
When to replace:
• Visible cracks, swelling, or brittle hose surface
• Signs of oil leakage near the filter housing or engine block
• Low oil pressure or oil delivery concerns
• During engine rebuild or maintenance service
• If original hose shows age-related deterioration
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG07827
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 1600 From engine M 67 001>>
Porsche 356 1600S From engine M 81 201>>
Porsche 356A / 356B / 356C
Porsche 912 1965-69
Diagram ref no 18 and 24
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG07818
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Fits:
Porsche 356 - 1950 to 1955
Porsche 356A - 1955 to 1959
Porsche 356B - 1959 to 1963
Porsche 356C - 1963 to 1965
Porsche 912 - 1965 to 1969
Diagram ref no 25
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61610137700
The product you are viewing cross references to these numbers