Oil System & Pipes
- 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
There are 4 oil tube per engine.
SET OF 4

Fits:
Porsche 911 911 2.0L 1965-1969
Porsche 911 1970-89
Porsche 964 1989-94
Porsche 993 1994-98
Click picture for large parts diagram.
Diagram Ref No 13.
Buy a set of 4 oil Tubes and Save money
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010704001
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
This set of 4 collapsible oil return tubes provides a complete replacement solution for all return tubes on an air-cooled Porsche flat-six engine. Ideal for full engine rebuilds or preventative maintenance, this set ensures uniform sealing and reliable oil return on all cylinders.
SET OF 4
Fits:
Porsche 911 911 2.0L 1965 - 1969
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram ref no 13.
Each tube expands into place and seals using high-temperature O-rings, eliminating the need for cylinder head removal. Replacing all four tubes at once prevents future oil leaks, ensures consistent oil pressure, and maintains proper lubrication throughout the engine.
Perfect for owners restoring or maintaining 911, 964 and 993 models where original fixed or aging tubes are known to fail after decades of heat cycling.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010704001
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 3.2 Carrera - 1984 to 1989
Kit Includes
Oil pipe - Engine to oil thermostat
Oil pipe - Oil thermostat to oil tank
Diagram Ref No 9 and 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILPIPEKIT03
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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)
Fits:
Porsche 911 SC - 1978 to 1983
Porsche 911 3.2 Carrera - 1984 to 1989
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.
Diagram Ref No 11A and 12A
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT04
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
You will require these pipes if you go ahead with the pre 1974 straight through exhaust system.
Oil thermostat to engine crankcase connection.

Fits:
Porsche 911 1984-89 3.2L
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILPIPEKIT01
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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
SET OF 4 TUBE.
This OE-Match set includes the non-collapsible oil tube (part number 90110735101) and the matching o-ring seals (9997071124A) required for secure, leak-free installation.
Fits:
Porsche 911 2.0L 1965 - 1969
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1994 - 1998
Diagram Ref No 36 + 37
The tube directs oil back into the sump or oil galleries, while the o-ring ensures a reliable seal at the mating junction to prevent leaks and maintain system integrity.
It replaces worn or damaged lines and seals with components manufactured to original specifications for correct fit, function, and durability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110735101
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 1984-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 11, 11A, 12, 12A, 13, 14, 14A, 15, 16, 17, 19, 20, 21, 22, 23, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45 and 46.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT03
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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 1978-1989 3.3L Turbo (930)

Fits:
Porsche 911 1974 -89
Click 'Zoom in' for large parts diagram.
Diagram ref no 11A, 12A, 13A, 13B,
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT05
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50

Fits:
Porsche 911 SC 1980-83
Porsche 911 3.2L 1984-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 11, 11A, 12, 12A, 13A, 13B, 13C, 13D, 18, 20, 21, 22, 23, 25, 26 and 27.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
OILCOOLERKIT01
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- 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)
Flows length of car.

Fits:
Porsche 911 1974-89
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93020704603
The product you are viewing cross references to these numbers
- 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)
Flows length of car.

Fits:
Porsche 911 1974-89
Click 'Zoom in' for large parts diagram.
Diagram Ref No 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93020704603
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
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

Fits:
Porsche 911 1978-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 14.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010734817
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
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Fits:
Porsche 911 1978-89
* Note when ordering this pipe also order
93010734818/1 (diagram ref no 15) which is the extension
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010734817
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
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
in Yellow passivated.
Fits:
Porsche 911 1978-89
* Note when ordering this pipe also order
93010734818/1 (diagram ref no 15) which is the extension
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010734817
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
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Cam line for cars with the tensioners upgraded, Cam lines tend to leak between rubber & metal joints.
Fits:
Porsche 911 1978-89
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9301073471Y
The product you are viewing cross references to these numbers
- 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)
Cam line for cars with the tensioners upgraded, Cam lines tend to leak between rubber & metal joints.
Fits:
Porsche 911 1978-89
Previous part numbers:
- 93010734703
- 93010734704
- 93010734705
- 93010734708
- 93010734710
- 93010734712
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9301073471Y
The product you are viewing cross references to these numbers
-
crankcase left 911 1987-89 101-05
-
crankcase right 911 1987-89 101-10
-
camshaft housing chain case 911 1987-89 103-05
-
engine lubrication oil pump lines 911 1987-89 104-00
-
engine lubrication oil tank lines 911 1987-89 104-01
-
engine lubrication oil cooler 911 1987-89 104-05
-
throttle linkage bracket 911 1987-89 107-12
-
fuel system front 911 1987-89 201-00
-
air injection 911 CARRERA 930.26 1987-89 108-00
-
clutch release mechanical 911 1987-89 301-05
-
replacement transmission transmission case 911 1987-89 302-00
-
front axle stabiliser 911 1987-89 401-00
-
gear housing transmission cover 911 1987-89 302-05
-
gear housing / transmission cover 911 1987-89 302-07
-
shift rods shift forks for 4-speed and 5-speed 911 1987-89 304-00
-
transmission suspension 911 1987-89 306-00
-
wheels 911 1987-89 601-00
-
brake fluid reservoir, brake master cylinder 911 1987-89 604-00
-
transmission control 911 TURBO 1987-88 701-00
-
transmission control 911 CARRERA / TURBO 1987-89 701-01
-
wing with sheet metal cup for tank 911 1978-89 valid up to: F >>91KS1 00958 COUPE, F >>91KS1 40341 TARGA,
>91KS1 50414 CABRIO, F >>93KS0 00184 COUPE, F >>93KS0 10067 TARGA, F >>93KS0 20083 CABRIO 801-30 -
wing with plastic cup for tank 911 1987-89 valid from: F 91KS1 00959>> COUPE, F 91KS1 40342>> TARGA, F 91KS1 50415>> CABRIO, F 93KS0 00185>> COUPE, F 93KS0 10068>> TARGA, F 93KS0 20084>> CABRIO 801-31
-
bumper front 911 1987-89 802-00
-
front apron, front spoiler, carrera 911 1987-89 802-01
-
bumper rear 911 1987-89 802-05
-
lid front 911 1987-89 803-00
-
lid rear 911 1987-89 803-05
-
door glass frame 911 COUPE 1987-89 804-15
-
door glass frame 911 TARGA / CABRIO / SPEEDSTER 1987-89 804-20
-
decorative fittings 911 1987-89 810-00
-
main folding top bow, roof frame, single parts 911 CABRIO 1987-89 811-12
-
emergency folding top complete, main folding top bow single parts 911 SPEEDSTER 1989 811-30
-
ventilation heating system - 2 - 911 1987-89 813-01
-
air conditioner, evaporator housing, single parts 911 1987-89 813-05
-
compressor mounting driving mechanism 911 1987-89 813-20
-
condenser lines accessories and others front 911 1987-89 813-45
-
condenser lines accessories and others REAR 911 1987-89 813-55
-
engine electrics - 2 - 911 CARRERA M30.20/25/26 1987-89 901-02
-
engine electrics - 3 - 911 1987-89 901-03
-
battery, starter, generator 911 1987-89 902-05
-
connector housing 2-pole 911 1987-89 902-56
-
horn 911 1987-89 903-00
-
rear window wiper 911 1987-89 904-05
-
windscreen washer system 911 1987-89 904-10
-
pedals for accelerator control 911 1987-89 702-10
-
interior equipment rear 911 1987-89 CABRIO / SPEEDSTER 807-07
Engine Cooling Oil System & Pipes – Precision Cooling and Lubrication for Porsche Performance
The engine cooling oil system and pipes play a crucial role in your Porsche’s performance and reliability. These components deliver and regulate oil flow between the engine, oil cooler, and filter, maintaining stable oil temperature and pressure. By keeping the oil cool and circulating efficiently, they help prevent overheating, reduce friction, and ensure smooth engine operation — even under extreme driving conditions.
At Design911, we offer a complete range of genuine and manufacturer-quality engine cooling oil system parts and pipes for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each component is engineered for precision fitment, high heat resistance, and long-lasting durability, ensuring your Porsche performs exactly as its engineers intended.
What Do Engine Cooling Oil System & Pipes Do?
The oil cooling system and its connecting pipes work
together to control temperature and maintain lubrication efficiency throughout
the engine. Their main functions include:
- Transporting
oil between the engine, oil cooler, and filter housing.
- Dissipating
excess heat from the oil to prevent breakdown under pressure.
- Maintaining
stable oil pressure for consistent lubrication.
- Supporting overall engine temperature regulation alongside the coolant system.
These parts ensure your Porsche’s engine oil stays at the ideal temperature and viscosity, protecting vital internal components from wear and damage.
Why Do Oil System Pipes and Components Fail?
Even with regular maintenance, oil cooling system components
can wear out due to heat, pressure, and age. Common causes of failure include:
- Corrosion
or cracking of metal oil pipes from long-term exposure to heat and
oil.
- Rubber
hose degradation from high temperatures or oil contamination.
- Leaks
at connectors or fittings caused by vibration or poor sealing.
- Blocked
or restricted flow from sludge or carbon build-up.
- Mechanical damage from debris or impact under the vehicle.
Signs of failure can include visible oil leaks, oil pressure warnings, overheating, or the smell of burning oil.
Why Replace Faulty Oil System Parts and Pipes?
A failing oil pipe or cooler line can cause oil loss, overheating, and even catastrophic engine failure if left unchecked. Replacing worn or damaged components ensures your Porsche’s oil circulation and cooling remain efficient and leak-free.
Benefits of replacement include:
- Restored oil flow and cooling performance.
- Prevention of leaks, overheating, and engine damage.
- Improved reliability and efficiency under all conditions.
- Manufacturer-quality materials for long-term durability.
All parts in this range are built from high-grade metals, reinforced hoses, and corrosion-resistant fittings, designed to meet or exceed factory standards for performance and longevity.