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Oil Tank
By OE Match
- Porsche 911 1978-1989 3.3L Turbo (930)
Engine Oil Tank - Stainless Steel
Restore an essential part of your Porsche 911 Turbo's
dry-sump lubrication system with this OE Match replacement engine oil tank.
Fits:
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
Designed for the Porsche 911 930 Turbo 3.3L from 1977-89, the oil tank acts as the external reservoir for the engine's dry-sump lubrication system. A sound oil tank is essential for maintaining a reliable supply of clean engine oil, particularly on a high-performance air-cooled turbocharged engine.
An ideal replacement for an original tank suffering from corrosion, leaks, contamination or previous poor-quality repairs.
What Does the Oil Tank Do?
Unlike a conventional wet-sump engine where most of the oil is stored beneath the crankshaft, the Porsche 930 uses a dry-sump lubrication system with a separate external oil reservoir.
Oil scavenged from the engine is returned to the tank before being supplied back through the lubrication system.
The oil tank performs several important functions:
- Stores the engine's oil supply outside the crankcase
- Provides a consistent supply of oil to the lubrication system
- Helps separate air from returning engine oil
- Helps reduce oil aeration and foaming
- Supports effective oil circulation
- Contributes to engine oil temperature management
- Helps maintain reliable lubrication during acceleration, braking and cornering
For a high-performance turbocharged engine such as the Porsche 930, maintaining the condition of the complete lubrication system is particularly important.
Why Do Oil Tanks Fail?
Many original Porsche 930 oil tanks have now been in service for several decades. Age, heat, road contamination and moisture can eventually cause deterioration.
Common problems include:
- Internal corrosion caused by moisture
- External corrosion and rust
- Corrosion around seams and mounting points
- Oil leaks from weakened areas
- Damage around pipe and hose connections
- Internal sludge and contamination
- Physical damage from road debris
- Previous welding or poor-quality repairs
- General deterioration caused by age
Internal corrosion can be particularly difficult to identify because the outside of the tank may still appear serviceable while deterioration is occurring internally.
When Should the Oil Tank Be Replaced?
Replacement should be considered whenever the existing oil tank can no longer provide a clean, secure and leak-free reservoir for the engine's oil supply.
Typical signs include:
- Visible oil leaks
- Significant external corrosion
- Suspected internal rust
- Corrosion around seams or mounting points
- Damaged oil pipe connections
- Persistent contamination or sludge
- Previous repairs of questionable condition
- Physical damage to the tank
- During a major engine rebuild or vehicle restoration
A heavily corroded or contaminated tank should not be ignored. Debris entering the lubrication circuit can potentially damage expensive engine components, while a leaking tank can result in loss of engine oil.
Why Replace an Ageing Porsche 930 Oil Tank?
The dry-sump lubrication system is fundamental to the reliability of the air-cooled Porsche 911 Turbo engine.
Replacing a deteriorated original tank helps restore the integrity of the oil system and provides confidence that the engine's oil is being stored in a clean, secure and leak-free reservoir.
It is particularly worthwhile during an engine rebuild or restoration when the associated oil hoses, oil lines, thermostat, filter connections and seals can be inspected at the same time.
Oil Tanks & Dry-Sump Lubrication Parts
The Porsche 911 930 Turbo relies on its dry-sump lubrication system to provide a dependable supply of engine oil during normal driving and demanding high-performance use.
As these cars age, corrosion and contamination within the original oil tank can become an increasing concern. Replacing a deteriorated reservoir with an OE Match oil tank can help restore the integrity and reliability of this critical lubrication system.
When replacing the oil tank, it is also advisable to inspect the associated oil hoses, hard lines, fittings, oil thermostat, filter connections, breather hoses, seals and mounting hardware for deterioration or leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010700607
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 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 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- 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
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Oil Filler Cap Seal
High-quality replacement oil filler cap seal designed for a wide range of Porsche models.
This gasket fits within the oil filler cap, ensuring a tight
and secure seal to prevent oil leaks and protect the engine from contamination.
It is an essential component for maintaining proper engine sealing and
cleanliness.
Fits:
Diagram ref no 12
Manufactured to OEM specifications, this seal provides precise fitment and reliable long-term performance—ideal for routine maintenance or resolving oil seepage issues.
Key Features
• Direct replacement oil filler cap seal
• Suitable for multiple Porsche models
• Ensures secure sealing of oil filler cap
• OEM-style fit and performance
• Durable material resistant to heat and oil
• Ideal for maintenance and leak prevention
Function and Purpose
This seal ensures a proper closure of the oil filler cap.
It helps to:
• Prevent engine oil leaks
• Maintain engine cleanliness
• Protect against dirt and contamination
• Support consistent engine performance
Why Replace Your Oil Filler Cap Seal
Over time, seals can degrade due to heat and oil exposure.
Common issues include:
• Oil seepage around the filler cap
• Hardened or cracked seal material
• Reduced sealing effectiveness
• Increased risk of contamination
Replacing the seal restores proper engine sealing and prevents leaks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99970184641
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 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 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.7L 8V 1988-89
- 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
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
The OE MATCH Oil Filler Cap is a replacement engine oil filler cap designed for compatible Porsche applications. Installed at the engine's oil filling point, the cap closes and seals the opening after engine oil has been added.
Fits:
- Porsche 911 SC 1974-83 SPORTMATIC ONLY
- Porsche 911 Turbo (3.3L) 09/1977-07/1989
- Porsche 964 1989-94
- Porsche 968 1992-95
- Porsche 924S 1986-88
- Porsche 944 2.7L 1989
- Porsche 944 S2 3.0L 1989-91
- Porsche 944 2.5L Turbo 1986-91
- Porsche 944 2.5L Turbo S 1987-88
- Porsche 928 S4 / GT / GTS 1987-95
Although relatively simple, the oil filler cap performs an important sealing function. A correctly fitted cap helps prevent engine oil from escaping while protecting the lubrication system from dirt, moisture and other external contamination.
What This Product Does:
The oil filler cap seals the opening used when adding engine oil.
Once installed correctly, it helps:
- Close the engine oil filling point
- Prevent oil from splashing or escaping
- Reduce the risk of dirt entering the engine
- Reduce moisture and external contamination
- Maintain the intended sealing of the lubrication system
- Keep the engine bay cleaner
- Provide convenient access during oil servicing
The cap must fit securely and its sealing surface must remain in good condition.
Symptoms Of Wear Or Failure:
Oil filler caps are exposed to engine heat, oil vapour and repeated removal during servicing. Over time, the cap or its sealing components can deteriorate.
Common symptoms include:
- Oil residue around the filler opening
- Oil leaking or misting around the cap
- Oil staining nearby engine components
- Cap becoming loose
- Cap no longer tightening securely
- Cracked or damaged cap
- Hardened or deteriorated sealing surface
- Damaged threads or retaining features
- Cap becoming difficult to remove or install
- Visible deformation
- Missing oil filler cap
Any persistent oil leakage around the filler opening should be investigated rather than simply cleaned away.
Why Replacement Matters:
Replacing a worn or damaged oil filler cap helps maintain the integrity and cleanliness of the engine lubrication system.
A new cap can help:
- Restore a secure seal
- Prevent oil leakage around the filler opening
- Reduce oil mist in the engine compartment
- Protect against dirt and moisture
- Keep surrounding engine components cleaner
- Replace cracked or deteriorated material
- Restore secure engagement with the filler opening
- Maintain reliable access for routine oil servicing
A missing or severely damaged filler cap should be replaced promptly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410709101
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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- 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 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)
Fits:
Porsche 356 B-T6 / C
Porsche 911 1965-86
Porsche 914 1970-76
Porsche 993 1994-98
Diagram ref no 12
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93010727201
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 928 4.5L 1978-82
Fits:
Porsche 911 1965-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 11.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110717603
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
- 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)
This precision-cut gasket seals the connection between the outer oil reservoir and the inner fender, preventing oil leaks and maintaining proper system pressure.
Fits:
Porsche 911 1973 - 1989
Porsche 911 (930) Turbo 1975 - 1989
Diagram Ref No 13.
As the oil tank gasket ages, it becomes brittle, compressed, or cracked from heat cycles and vibration. This leads to oil seepage around the tank area, creating drips beneath the car, engine-bay contamination, and potential loss of oil pressure. Replacing the gasket restores a proper seal, prevents oil leaks, and helps maintain the health and cleanliness of the lubrication system.
Replace the oil tank gasket when:
• You notice oil drips or seepage around the oil tank
• The gasket appears dry, brittle, cracked, or crushed
• The oil tank is being serviced or removed
• You smell oil fumes from the rear right side of the vehicle
• Oil pressure seems inconsistent due to possible leakage
• Performing a restoration or major engine/oil system refresh
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110719203
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)
Fits:
Porsche 911 - 1974 to 1989
Protect the engine oil tank from stones and debris with this stone guard
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91110714100
The product you are viewing cross references to these numbers
OEMatch Oil Tank — Fit, Function, Confidence
Oil tanks play a central role in Porsche lubrication systems by storing, circulating and helping to cool engine oil. In dry-sump layouts they also allow lower engine placement while ensuring steady oil delivery under varying loads. OEMatch supplies oil tank options catalogued for Porsche models to support application-specific needs.
Understanding OEMatch Oil Tank
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original oil tank. OE (Original Equipment) refers to parts matching original specifications for the oil tank and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM oil tank engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Oil tanks store and circulate engine oil, separate air from oil to reduce foaming, and assist temperature regulation so bearings and moving parts receive steady lubrication. OEMatch maintains an extensive Porsche parts catalogue with thousands of part numbers and many OE cross-references to help identify compatible replacements; this coverage helps when matching tanks, breather components, seals and fittings to specific model requirements.
Benefits Include
- Restored oil circulation and pressure stability to protect bearings and camtrain components.
- Improved oil temperature control and reduced overheating risk under sustained load.
- Reduced foaming and improved oil film stability through effective air separation.
- Replacement seals and fittings lower the risk of external leaks and contamination.
Why Oil Tank Wear and Fail
- Cracks or leaks from vibration, impact or old mounting points.
- Corrosion from moisture, condensation or degraded oil.
- Blocked breathers or vents causing pressure imbalance and reduced flow.
- Internal contamination such as sludge or metal debris impairing circulation.
The Importance of Replacing with OEMatch Oil Tank
A leaking or damaged oil tank can lead to oil loss, low pressure or poor cooling, increasing the risk of severe engine damage. Timely replacement restores correct oil flow and pressure, prevents oil starvation and helps maintain reliable lubrication under road or track conditions. Where components affect pressure, breathers or sensor interfaces, check mounting, seals and associated hoses during replacement and follow model-specific procedures for installation and inspection.
Advantages
- Manufactured to original-spec dimensions and tolerances so units fit original mounting points and clearances.
- Materials and construction chosen to resist corrosion and mechanical stress, including high-grade alloys or reinforced composites where specified.
- Catalogued references and cross-checks to simplify selection for Porsche models and related breather, seal and hose parts.
