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- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Restore the integrity of your Porsche engine's oil cooling system with this OE Match Engine Oil Cooler Vent Hose
Fits:
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Diagram Ref No 30
The vent hose forms part of the engine oil cooler system, providing the necessary connection between associated components and helping the system operate correctly. Positioned within the engine compartment, the hose is continually exposed to heat, vibration and temperature cycling, which can cause the original material to harden and deteriorate with age.
Replacing a brittle, cracked or damaged hose helps maintain a secure system and reduces the risk of leaks or further deterioration.
What Does an Engine Oil Cooler Vent Hose Do?
The oil cooler vent hose forms part of the connections associated with the engine oil cooling system. Its purpose is to maintain the correct routing and ventilation between the relevant components while providing a flexible connection capable of accommodating engine movement and vibration.
A serviceable hose helps provide:
Correct operation of the associated oil cooler system Secure connection between components Resistance to engine movement and vibration Reliable sealing and system integrity
Why Do Oil Cooler Vent Hoses Fail?
Engine compartment hoses naturally deteriorate with age. Continuous exposure to heat causes the material to gradually lose flexibility, while vibration and repeated heating and cooling cycles can accelerate deterioration.
Common causes include:
- Age and high mileage
- Constant engine heat
- Repeated heat cycles
- Rubber becoming hard or brittle
- Cracking around connection points
- Oil and chemical contamination
- Engine vibration
- Previous removal or incorrect installation
Older hoses may appear serviceable externally but can crack when disturbed during maintenance.
When Should the Hose Be Replaced?
Replacement should be considered if:
- Cracks or splits are visible
- The hose has become hard or brittle
- Connections are loose or deteriorated
- Leakage or residue is visible around the hose
- The hose is damaged during removal
- The oil cooler system is being serviced
- The engine is undergoing major maintenance or refurbishment
Preventative replacement is particularly worthwhile when surrounding components have already been removed, avoiding additional labour should an ageing hose fail later.
Porsche Engine Oil Cooler Hoses & Cooling System Components
The engine oil cooling system plays an important role in maintaining stable operating temperatures and protecting internal engine components. Hoses and connections within the system are therefore important service items, particularly as Porsche vehicles become older.
Heat, vibration and age can cause original hoses to become brittle, cracked or unreliable. Inspecting and replacing deteriorated hoses during oil cooler or engine maintenance helps prevent leaks and provides greater confidence in the integrity of the system.
When replacing an oil cooler vent hose, it is also worthwhile inspecting nearby hoses, connectors, seals and fittings for similar age-related deterioration.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610623053
The product you are viewing cross references to these numbers
- 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
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Oil Breather Hose
The Porsche 911 Oil Breather Hose is a vital
component of the engine's crankcase ventilation system, helping to regulate
internal engine pressure and safely route oil vapours through the breather
circuit. Manufactured to meet Porsche specifications, this replacement hose
ensures reliable operation while supporting engine efficiency and longevity.
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Diagram ref no 26
Over time, breather hoses can deteriorate due to continuous exposure to heat, oil residue, and engine bay contaminants. Cracks, splits, or hardened rubber can lead to vacuum leaks, oil mist escape, poor idle quality, and reduced engine performance. Replacing worn breather hoses with the correct specification part helps maintain optimal engine operation and prevents avoidable maintenance issues.
Whether you are carrying out preventative maintenance, an engine rebuild, or a full Porsche restoration, the 93020738601 oil breather hose provides the correct fitment and dependable performance expected from a quality Porsche replacement component.
Product Features
- Direct replacement for Porsche part number 93020738601
- Supports correct crankcase ventilation system operation
- Helps maintain proper engine pressure regulation
- Resistant to oil vapours, engine heat, and ageing
- Precision fit for straightforward installation
- Suitable for Porsche 911 maintenance and restoration projects
Benefits of Replacing Your Breather Hose
A damaged or ageing oil breather hose can negatively affect engine performance by allowing vacuum leaks and disrupting airflow within the crankcase ventilation system. Installing a new breather hose helps maintain engine efficiency, reduces the risk of oil leaks, and supports long-term reliability.
Porsche 911 Oil Breather Hoses & Crankcase Ventilation Components
Design911 offers a comprehensive range of Porsche 911 oil breather hoses, crankcase ventilation components, engine vent pipes, air-oil separator hoses, vacuum hoses, and genuine Porsche replacement parts for classic and modern Porsche 911 models.
The crankcase ventilation system plays a crucial role in maintaining engine health by managing internal pressure and recirculating oil vapours. Worn or damaged breather components can contribute to oil leaks, rough running, poor emissions performance, and reduced engine efficiency.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93020738601
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Diagram Ref No 26 and 28
Oil lines are often overlooked components, yet their failure can lead to significant damage. These lines connect the engine, oil cooler, or timing chain tensioner, functioning reliably for years without drawing attention.
However, if a crack or break develops, substantial amounts of oil may leak—potentially draining the entire oil tank—leaving critical components without proper lubrication. To prevent such failures, it is advisable to replace aging oil hoses or lines at the first signs of wear.
In the context of full restorations, replacing all oil lines or hoses is a common and prudent practice to ensure long-term reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILPIPEKIT04
The product you are viewing cross references to these numbers
This kit is comprised of the following items: