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- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- 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
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
Breather Hose - 15 x 2.5mm
Sold by the metre
High-quality breather hose with 15 x 2.5mm dimensions, designed for Porsche 924, 924S, and 944 models.
This versatile hose is used across multiple systems,
including fuel tank breather, oil breather, and inlet breather applications,
making it an essential component for maintaining proper ventilation and
pressure balance within the engine and fuel systems.
Fits:
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- 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
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-85
Diagram ref no 6
Engineered to OEM specifications, this hose offers durability, flexibility, and resistance to heat, oil, and fuel vapours, ensuring reliable performance in demanding engine bay environments. Ideal for maintenance, repair, or restoration of classic Porsche models.
Key Features
• 15 x 2.5mm breather hose specification
• Suitable for Porsche 924, 924S, and 944
• Part number N0203631
• Multi-use: fuel tank, oil, and inlet breather systems
• Resistant to heat, oil, and fuel vapours
• Flexible and durable construction
• OEM-style fit and performance
Function and Purpose
This breather hose serves multiple ventilation roles across the vehicle.
It helps to:
• Vent fuel tank vapours safely
• Regulate pressure in oil breather systems
• Maintain airflow within inlet systems
• Prevent pressure build-up in critical components
• Support efficient engine and fuel system operation
Why Replace Breather Hoses
Breather hoses are exposed to heat, oil, and vapours, leading to wear over time.
Common issues include:
• Cracking or splitting
• Oil or vapour leaks
• Hardening and loss of flexibility
• Reduced ventilation efficiency
Replacing worn hoses ensures proper system balance and prevents performance issues.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
N0203631
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
The OE Match 700mm Long Cloth Covered Rubber Breather Hose is a high-quality replacement hose designed for Porsche 911 engine breather and oil ventilation systems. Manufactured from durable oil-resistant rubber with a traditional cloth-braided outer covering, it replicates the appearance and function of the original factory component while providing reliable performance and longevity.
Fits:
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Diagram Ref No 12
This breather hose forms a vital connection within the engine's crankcase ventilation system, allowing oil vapours and excess pressure to be safely routed away from the engine. The cloth-covered construction helps maintain an authentic factory-correct appearance, making it ideal for both maintenance and restoration projects.
What This Product Does:
- Connects key components within the engine breather and oil ventilation system.
- Allows crankcase gases and oil vapours to circulate correctly.
- Helps regulate internal engine pressure.
- Supports efficient engine operation and oil system performance.
- Reduces the risk of oil leaks caused by excessive crankcase pressure.
Symptoms Of Wear Or Failure:
- Cracks, splits or perished rubber.
- Oil leaks or oil residue around the hose and connections.
- Strong oil vapour smells from the engine bay.
- Hardened, brittle or collapsed hose sections.
- Excessive crankcase pressure.
- Increased oil mist contamination within the engine compartment.
- Poor engine breathing and ventilation performance.
Why Replacement Matters:
- Breather hoses are constantly exposed to engine heat, oil vapours, pressure fluctuations and vibration. Over time, the rubber can harden, crack or deteriorate, compromising the integrity of the ventilation system. A damaged breather hose can lead to oil leaks, pressure build-up, contamination of engine components and increased wear on seals and gaskets.
- Replacing a worn breather hose helps maintain correct crankcase ventilation, prevents unnecessary oil leaks, protects surrounding engine components and ensures the engine's oil system continues to operate as intended. Regular replacement is an important part of maintaining reliability and preserving the performance of your classic Porsche.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG236008A
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
Fits:
Porsche 911 1965-83
Click picture for large parts diagram.
Diagram Ref No 37.
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Oil Breather Hose from Oil Tank
Maintain the integrity of your Porsche 911's crankcase
ventilation system with the Oil Breather Hose 93020738501. Designed to meet
original Porsche specifications, this essential engine hose helps manage
crankcase pressure and directs oil vapours through the engine's breather
system, contributing to optimal engine performance, reduced emissions, and
long-term reliability.
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Diagram Ref No 2
Over time, breather hoses can become brittle, cracked, or contaminated due to prolonged exposure to heat and oil vapours. Replacing a worn oil breather hose helps prevent vacuum leaks, oil seepage, and potential engine running issues while ensuring the ventilation system operates as intended.
Suitable for a range of Porsche 911 models, this replacement breather hose is manufactured to provide a precise fit and dependable performance, making it an ideal solution during engine maintenance, restoration projects, or preventative servicing.
Key Features
- Direct replacement for Porsche part number 93020738501
- Helps maintain correct crankcase ventilation
- Supports efficient engine breathing and pressure regulation
- Resistant to heat, oil vapours, and engine bay conditions
- Precision fit for straightforward installation
- Ideal for maintenance, repair, and restoration projects
Why Replace Your Oil Breather Hose?
A deteriorated breather hose can contribute to vacuum leaks, poor idle quality, increased oil residue around the engine bay, and reduced ventilation efficiency. Replacing ageing hoses helps maintain engine health and supports the reliable operation expected from your Porsche 911.
Porsche 911 Engine Breather Hoses & Crankcase Ventilation Parts
Keeping your Porsche 911's crankcase ventilation system in peak condition is essential for engine performance, longevity, and emissions control. At Design911, we supply a comprehensive range of Porsche 911 breather hoses, crankcase ventilation pipes, oil separator hoses, engine ventilation components, and OEM replacement engine hoses suitable for classic and modern Porsche 911 models.
Whether you're carrying out a full engine rebuild, restoring an air-cooled Porsche, or replacing worn ventilation components during routine maintenance, choosing high-quality breather system parts helps prevent vacuum leaks, oil contamination, and crankcase pressure issues.
Our range includes genuine Porsche breather hoses, replacement oil ventilation pipes, crankcase breather tubes, air-oil separator connections, engine vent hoses, and related Porsche 911 engine management components designed for reliable fitment and long service life.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93020738501
The product you are viewing cross references to these numbers