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- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Fits:
Porsche 924S - 1987 to 1988 - from engine numbers 43H05633 and 43H31344
Porsche 944 / 944S / 944S2 / turbo - 1987 to 1991 - from engine numbers
41H 00420 >>
41H 20125 >>
43H 05638 >>
43H 61344 >>
42H 03028 >>
Porsche 968 - 1992 to 1995
Diagram ref no 35
Related reference numbers
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94410703207
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
- 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)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Collapsible oil tube kit for Porsche 911, 964 and 993 engines. Supplied as an assembled return tube with associated sealing components, intended as a direct-fit replacement where the original oil return tube has aged or started to leak.
Overview & Construction
This kit uses a telescopic tube design to mirror the layout of the original return assembly between the cylinder head/oil galleries and the crankcase or external oil tank, depending on application. The collapsible section allows the tube to be installed without splitting the crankcase, while the included O-rings and circlip provide axial retention and a radial seal at each end. The construction is aimed at withstanding typical air-cooled engine temperatures, oil exposure and vibration so that the tube can maintain a stable sealing interface over repeated heat cycles.
- Collapsible/telescopic tube body for in-situ installation
- Sealing rings for both ends of the tube
- Circlip for tube location and retention (where applicable)
- Designed around original routing and connection points on 911, 964 and 993 engines
- One kit services a single oil return position; four tubes are normally used per engine
Operational Symptoms
- Oil drips or wetness along the oil return tubes or at their joints to the crankcase or cam carrier
- Oil residue on heat exchangers, undertrays or the lower engine casing
- Smell of hot oil after driving, sometimes with light smoke where oil contacts hot exhaust parts
- Progressive oil consumption not explained by external gaskets or top-end components
- Leaks that become more evident after long, hot runs when oil is at full temperature
Replacement Rationale
On older air-cooled engines, rigid or early-pattern tubes can harden, corrode or lose tension at the sealing interfaces, leading to external leaks or reduced return flow from the heads back to the sump or tank. Replacing a tired tube with a collapsible assembly allows the return line to be renewed with the engine in situ, restoring a defined oil path and fresh sealing surfaces at both ends. This helps maintain predictable oil circulation, reduces the risk of oil mist on hot components, and can be combined with other oil system work during rebuilds or top-end refreshes to minimise repeat access.
Compatibility
- Porsche 911 2.0L 1965–1969
- Porsche 911 1970–1989
- Porsche 964 1989–1994
- Porsche 993 1994–1998
Support & Advice
Check the condition of all four return tubes when the engine is accessible, as similar age and exposure often mean that multiple tubes show seepage at the same time. Confirm fitment against your specific model year and engine variant before installation, and ensure all sealing surfaces are clean, undamaged and free from old O-ring material prior to assembly.
Search Context
Search context: Many searches use terms like 'genuine' or 'OEM'. This part is a compatible replacement engineered to match original specifications. It is not a Porsche Genuine Part.
Related reference numbers
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93010704001
The product you are viewing cross references to these numbers
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Oil Pipe – Engine to Oil Thermostat
The Porsche 911 Oil Pipe connects the engine oil
system to the oil thermostat, allowing engine oil to flow correctly through the
external oil cooling circuit. This pipe is an important part of the Porsche 911
dry-sump lubrication system, helping route hot engine oil towards the
thermostat before it is directed to the front oil cooler when required.
Fits:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Diagram Ref No 9
On air-cooled Porsche 911 models, correct oil circulation is essential for engine temperature control, lubrication, and long-term reliability. A damaged, corroded, restricted, or leaking oil pipe can reduce oil flow efficiency, cause oil loss, and compromise the cooling performance of the engine oil system.
This replacement oil pipe is ideal for Porsche 911 maintenance, restoration, engine rebuilds, and oil cooling system repairs.
What Does This Oil Pipe Do?
The oil pipe transfers oil from the engine towards the oil thermostat. The thermostat regulates whether oil is sent through the external oil cooler circuit, depending on operating temperature. When the engine oil reaches the correct temperature, the thermostat opens and allows oil to circulate through the cooler system, helping maintain stable engine temperatures.
A properly functioning oil pipe helps:
- Maintain correct oil flow from the engine to the thermostat
- Support efficient oil temperature regulation
- Protect the engine from overheating
- Preserve lubrication performance
- Keep the Porsche 911 dry-sump oil system operating as intended
Why Does This Oil Pipe Fail?
Porsche 911 oil pipes are exposed to heat, road debris, moisture, vibration, and oil system pressure. Over time, these conditions can cause deterioration, especially on older air-cooled models.
Common reasons for failure include:
- Corrosion on exposed metal pipe sections
- Damage from road debris or impact
- Cracked or weakened joints
- Oil leaks from ageing connections
- Seized or damaged fittings during removal
- Internal restriction caused by debris or old oil deposits
- Previous poor repairs or incorrect installation
Because these oil pipes are part of a high-temperature, high-use lubrication system, even minor leaks or restrictions should be treated seriously.
When Should You Replace It?
Replace the oil pipe if you notice visible corrosion, oil leaks, damaged pipework, crushed sections, poor fitting condition, or oil residue around the thermostat or engine connections.
Replacement is also recommended during:
- Engine removal or rebuild work
- Oil thermostat replacement
- External oil cooler system refurbishment
- Full restoration projects
- Preventative maintenance on ageing oil lines
- Repair of leaking or seized oil pipe fittings
Replacing the pipe before complete failure helps prevent oil loss, poor cooling performance, and potential engine damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010774315
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
The OE Match S Hose Oil Cooler to Tank is a high-quality replacement hose designed to connect the engine oil cooler system to the oil tank in classic Porsche applications. Commonly referred to as the "S Hose" due to its distinctive shape, this component plays a critical role in the dry sump lubrication system by allowing oil to flow efficiently between the oil tank and engine cooling circuit.
Fits:
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Diagram Ref No 22
Manufactured from durable, oil-resistant rubber and engineered to OE specifications, this replacement hose provides reliable sealing, correct fitment and long-lasting performance. It is an essential component for maintaining proper oil circulation and protecting the engine from lubrication-related issues.
What This Product Does:
- Connects the oil tank to the engine oil cooler system.
- Allows the transfer of engine oil throughout the dry sump lubrication system.
- Maintains proper oil circulation and cooling efficiency.
- Helps regulate engine operating temperatures.
- Ensures a consistent supply of oil to critical engine components.
- Supports overall engine lubrication and longevity.
Symptoms Of Wear Or Failure:
- Oil leaks beneath the vehicle or around hose connections.
- Cracked, split or perished rubber.
- Soft, swollen or deteriorated hose material.
- Oil seepage around the hose body.
- Low engine oil levels due to leakage.
- Burning oil smells from oil contacting hot engine components.
- Reduced oil system efficiency.
- Visible ageing, hardening or deformation of the hose.
Why Replacement Matters:
- The S Hose is constantly exposed to hot engine oil, pressure fluctuations, engine vibration and age-related deterioration. Over time, the rubber can harden, crack or weaken, increasing the risk of sudden oil loss. Because this hose carries a significant volume of engine oil, failure can result in rapid oil leakage that may lead to severe engine damage if not addressed immediately.
- Replacing a worn or ageing S Hose helps maintain proper oil circulation, prevents potentially catastrophic oil leaks and protects vital engine components from lubrication failure. An OE Match replacement restores the integrity of the oil system and helps ensure reliable performance from your Porsche's dry sump engine.
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91110723300
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