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- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
The oil-supply pipe for the rear-mounted engine of classic Porsche 911 (Type 911/930) models from 1974-86. It replicates the original Porsche tube used to route oil from the thermostat to the oil cooler mount. Manufactured to match original equipment, the pipe guarantees correct oil flow, leak-free sealing, and reliable operation in this high-performance engine context.
Fits:
Porsche 911 1974 - 1986
Diagram Ref No 12
• Position on Vehicle: Oil supply pipe running along the under-floor or engine compartment from the front oil cooler/thermostat oil outlet toward the rear of the engine or oil sump/cooler.
• Applications: Ideal when the original oil-supply pipe is cracked, corroded, leaking, missing, kinked or shows signs of fatigue - crucial for restoring correct oil-pressure routing and engine reliability in classic 911/930 models.
In classic Porsche 911 and 930 engines, the oil-supply pipe carries engine oil under pressure towards the rear of the engine or oil-cooler circuit. A compromised pipe can allow oil leaks, pressure drop, decreased flow or contamination ingress - all of which can lead to reduced lubrication, bearing wear or engine damage. Replacing it with a correctly pipe restores the original oil-routing path and safeguards your engine.
When and why to replace:
• Visible oil leakage around the pipe or evidence of weepage along the routing.
• Corrosion, cracks or damage to the original pipe or its mounting brackets.
• The pipe has been removed or disturbed during prior engine works and re-use is not recommended.
• When restoring or rebuilding the engine oiling system on a classic 911/930.
• If oil pressure or flow issues are suspected and the pipe is part of the supply route.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93020704503
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
Related, superseded, cross reference or alternative numbers for comparison.
93010704001
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
O-rings required part number 9997071124A
Price is for 1 but there are 4 per engine
Fits:
Porsche 911 911 2.0L 1965 - 1969
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram Ref No 13.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110735101
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
Fits:
Porsche 911 2.7-3.0 08/1973-07/1974
Click 'Zoom in' for large parts diagram.
Diagram Ref No 20.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110772800
The product you are viewing cross references to these numbers