Crankcase Parts

Billet Aluminium Oil Drain / Strainer Cover with Cooling Fins

Upgrade the engine lubrication system on your classic Porsche with this OE Match Billet Aluminium Oil Drain and Strainer Cover with 21 Cooling Fins.  Designed for all Porsche 356 and 912 engines using the 3-piece engine case, this upgraded cover is CNC machined from aluminium to provide a precise, perfectly flat contact surface.

Fits:

• Porsche 912 SWB 1965-1968 (F)
• Porsche 356 1950-55
• Porsche 356A 1955-59
• Porsche 356B 1959-63
• Porsche 356C 1963-65

Diagram ref no 31

The improved rigidity of the billet aluminium construction helps maintain an even sealing surface when installed, making it a worthwhile upgrade over an old, distorted or damaged original cover. In addition, 21 integral cooling fins increase the cover's external surface area, helping transfer heat from the engine oil to the surrounding airflow. This provides a useful additional oil-cooling effect while retaining a straightforward bolt-on installation.

Magnet Installation

Please note that a magnet is not included with this cover.

The magnet from the existing oil strainer cover must be transferred to the new billet aluminium cover and secured using the supplied rivet.

This allows the original magnetic function to be retained while benefiting from the upgraded CNC-machined cover.

Finished in black for a discreet appearance, the cover can be installed using the original engine studs, with no longer replacement studs required.

What Does the Oil Strainer Cover Do?

The oil strainer cover is located on the underside of the engine and closes the opening containing the engine oil strainer.

The strainer helps prevent larger particles and contaminants from circulating through the engine lubrication system, while the cover seals the assembly and keeps the engine oil contained.

Because this area is accessed during oil and strainer servicing, the condition and flatness of the cover are particularly important for achieving a reliable seal.

A correctly fitted oil strainer cover helps:

Seal the engine oil strainer opening Prevent oil leakage Secure the oil strainer assembly Provide access during oil system servicing Maintain the integrity of the lubrication system

What Do the 21 Cooling Fins Do?

This upgraded version incorporates 21 cooling fins directly into the aluminium cover.

The fins increase the surface area exposed to airflow underneath the vehicle. As heat passes from the engine oil into the aluminium cover, the increased surface area helps dissipate some of this heat into the surrounding air.

The fins therefore provide supplementary oil cooling without requiring an additional external oil cooler or major modifications to the engine.

This can be particularly useful on engines exposed to sustained higher temperatures during enthusiastic road driving or other demanding operating conditions.

Why Do Original Oil Strainer Covers Fail?

Original-style covers can deteriorate or become distorted after decades of use and repeated servicing.

One of the most common problems is deformation around the mounting holes caused by repeated tightening or previous over-tightening. Once the cover is no longer completely flat, the gasket may not be compressed evenly against the engine case.

Common problems include:

• Warping or distortion
• Deformation around mounting holes
• Over-tightened mounting hardware
• Damaged sealing surfaces
• Scratches and corrosion
• Repeated removal and installation
• General age-related deterioration

A distorted cover can contribute to oil seepage even when new gaskets are fitted.

Why Upgrade to a Billet Aluminium Version?

The major advantage of this upgraded cover is its rigid CNC-machined aluminium construction.

Machining the component provides a precise, flat sealing surface, helping the gasket sit evenly between the cover and engine case. The increased rigidity also makes the cover less prone to the distortion commonly found on older conventional drain plates.

Benefits include:

• CNC-machined aluminium construction
• Perfectly flat contact surface Increased rigidity
• Reduced tendency to distort
• Improved support for the sealing gasket 21 integrated cooling fins
• Additional oil heat dissipation
• Durable replacement for an ageing original cover
• Black finish
• Straightforward installation using original studs

For Porsche 356 and 912 engines suffering from a distorted original cover, or where improved oil cooling is desirable, the billet finned version combines improved sealing characteristics with an additional cooling function.

Easy Installation

The cover has been designed to fit using the original engine case studs.

No longer studs are required, helping maintain the original mounting arrangement and making this a straightforward upgrade during routine oil system servicing or an engine rebuild.

Finned Oil Strainer Covers & Engine Oil Cooling Upgrades

Maintaining effective lubrication and controlling engine oil temperature are important considerations for classic Porsche 356 and 912 engines.

Original oil strainer covers can become distorted after years of servicing, potentially making it difficult for the gasket to seal correctly. Replacing a warped cover with a CNC-machined billet aluminium version provides a flatter and more rigid sealing surface while retaining straightforward access to the oil strainer.

The addition of 21 cooling fins provides another useful advantage. By increasing the surface area of the aluminium cover exposed to airflow beneath the vehicle, additional heat can be dissipated from the oil system.

This makes the finned billet cover a practical upgrade for owners looking to combine improved sealing, increased component rigidity and supplementary oil cooling in a single direct-fit component.

When replacing the oil strainer cover, it is also worthwhile inspecting the oil strainer, gaskets, magnet, mounting hardware and engine case sealing surface before reassembly.

Related reference numbers
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53901150

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Engine sump plate, without sump plug hole.

Fits:
Porsche 911 1969-83
Porsche 914 1970-76

Click 'Zoom in' for large parts diagram.
Diagram ref no 36

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93010190200

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Engine sump plate, without sump plug hole
OE Match engine sump plate for Porsche 911 models from 1969 to 1983 and Porsche 914 models from 1970 to 1976. This version is manufactured without a sump plug / drain plug hole and forms part of the lower engine oil system. Suitable for replacing a damaged, distorted, corroded or leaking original sump plate where part number 93010190200 is specified.

Fits:
Porsche 911 1969 - 1983
Porsche 914 1970 - 1976

Diagram ref no 36

The engine sump plate is fitted to the underside of the engine and closes the lower section of the crankcase / oil sump assembly. This version does not include a sump drain plug hole, so it should only be used on applications requiring this specific configuration.

What this part does

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93010190200

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Cover for oil strainer, with hole and plug.
It is engineered to be a direct-fit replacement for the original sump plate in the engine oil system of classic Porsche models, ensuring accurate alignment and compatibility with other oil system components.

Fits:
Porsche 911 1969 - 1983
Porsche 914 1970 - 1976

Diagram ref no 36

The sump plate forms the base of the engine’s oil sump, helping to contain and channel oil that has passed through the engine before it is drawn up again by the oil pump. It contributes to proper oil retention, distribution, and structural support for the lower part of the engine’s lubrication system. Without this plate, oil could escape or fail to be delivered reliably to internal engine components.

Installed at the bottom of the engine block, the sump plate either supports or replaces the original metal surface that captures oil returning to the sump and often integrates or supports features such as oil drain plug provision (depending on variant). It ensures that the engine’s lubricating oil system maintains proper capacity and seal integrity, preventing leaks and helping to sustain stable oil flow under a range of operating conditions.

The sump plate plays a vital role in the engine lubrication system. Over time, original plates can be damaged by corrosion, impact, or wear and may not seal as effectively. A compromised sump plate can lead to:
• Oil leaks at the bottom of the engine
• Reduced oil capacity or poor oil return
• Increased risk of engine wear or damage due to insufficient lubrication.

Replacing ensures proper oil containment and system integrity, helping preserve reliability and keep your classic Porsche engine performing as intended.

Replace the sump plate if you notice:
• Visible oil leaks under the engine
• A sump or plate that is bent, corroded, or damaged
• During engine overhaul or oil system servicing
• When planning long-term reliability for classic restoration
• If the original plate fails to seal properly

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93010190200

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Engine Sump Plate.

The OE Match Engine Sump Plate is a premium-quality replacement engine lubrication component designed to seal and protect the underside of the engine crankcase on compatible classic Porsche models. Manufactured to OE specifications for fit, strength and durability, the sump plate provides a secure closure for the engine sump while allowing access for routine oil changes and engine maintenance.

Fits:

• 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 914 (1970-1976)  

Diagram Ref No 36

Manufactured from high-quality pressed steel with a corrosion-resistant finish, the sump plate is engineered to withstand engine heat, vibration, oil exposure and road debris. Precision-machined sealing surfaces ensure an accurate OE-style fit, helping to maintain a reliable oil-tight seal when installed with the correct gasket and hardware. It is ideal for replacing warped, corroded or damaged original sump plates during engine servicing or restoration.  

What This Product Does:

• Seals the underside of the engine sump.
• Helps retain engine oil within the lubrication system.
• Protects internal engine components from contamination.
• Provides access for engine oil draining and maintenance.
• Maintains the integrity of the engine lubrication system.
• Supports correct engine oil circulation.
• Restores factory-style fitment and sealing performance.
• Forms an essential part of the engine lubrication system.

Symptoms Of Wear Or Failure:

• Engine oil leaks from the sump plate.
• Warped or distorted sealing surface.
• Corrosion or rust on the plate.
• Damaged drain plug threads where applicable.
• Oil residue on the underside of the engine.
• Loose or damaged mounting holes.
• Persistent oil seepage after gasket replacement.
• Visible dents or impact damage from road debris.
• Low engine oil level caused by leakage.
• Oil drips beneath the parked vehicle.

Why Replacement Matters:

• The engine sump plate is continuously exposed to engine heat, vibration, road debris and regular servicing. Over time, it can become warped through over-tightening, damaged by impacts or weakened by corrosion, reducing its ability to provide a reliable oil seal.
• A damaged sump plate can lead to persistent oil leaks, resulting in reduced engine oil levels and the risk of inadequate lubrication. Continued oil loss can accelerate wear of bearings, pistons, camshafts and other critical engine components, potentially leading to costly engine repairs.
• Replacing a worn or damaged sump plate restores the integrity of the engine lubrication system and ensures a dependable oil-tight seal. The OE Match replacement provides factory-style fitment, high-quality pressed steel construction and long-lasting durability, helping maintain reliable engine performance, effective lubrication and the longevity expected from your Porsche.

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90110138600

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Gasket for Generator carrier bracket.

Fits:
Porsche 912 1965-69
Porsche 356 1950-65

Diagram ref no 45

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53901125

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Gasket for Generator carrier bracket
OE Match gasket for the generator carrier bracket on Porsche 356 and 912 models. This replacement sealing gasket fits at the generator carrier mounting interface, helping provide a secure seal and prevent oil seepage from the surrounding engine area.  

Fits:
Porsche 912 1965 - 1969
Porsche 356 1950 - 1965

Diagram ref no 45

This gasket is used with the generator carrier / generator stand assembly on classic Porsche air-cooled engines. It provides the sealing surface between the carrier bracket and its mounting point and is suitable for replacing an aged, compressed, damaged or leaking original gasket.

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53901125

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Gasket for intermediate shaft (IMS) cover plate. 

Please check the part number of your IMS cover plate to ensure compatibility. This gasket is designed for plates with part numbers 91110516200 and 91110516201.

Fits:
Porsche 911 1965-1982
Porsche 911 Turbo (930) 1975-82
Porsche 914-6 1970-72

Porsche 911 SC 1983* 
Porsche 911 Turbo (930) 1983*

Diagram ref. 49.

*NOTE: Midway through the 1983 model year, Porsche changed the IMS cover plate from a three-nut design to a two-nut circular cover. If your vehicle has the circular cover, an O-ring is used instead of this gasket. Please see below for more information:

This gasket (three-nut design) is compatible with 1983 SC models with an engine number up to and including: 63D 4069 (Standard models), 64D 3716 (US/Canadian market), and 63D 8154 (Japanese market). For 911 Turbo models, this gasket fits engines with numbers up to and including 67D 0711 (all markets).

Given the age of these vehicles, engine swaps or modifications are common. We strongly recommend verifying which cover is fitted to your engine before ordering. If your cover plate is larger with three holes, this gasket will fit. If your cover plate is smaller, circular, with two holes, this gasket will not fit.

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93010519801

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Gearbox housing stud, BM 8 x 30
Sold each.

Fits:
Porsche 911 1969-89 
not for Turbo models

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Diagram ref no 4

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99906204402

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Gearbox housing stud, BM 8 x 30
Sold each.

Fits:
Porsche 911 1969-89 
not for Turbo models

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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99906204402

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Generator carrier bracket.

Fits:
Porsche 912 1965-68
Porsche 356 1600 C/SC 1964-65

Click 'Zoom in' for large parts diagram.
Diagram ref no 44

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PCG10121601

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High Performance Deep Oil Sump Kit with Hardware, Gasket and Magnetic Drain Plug for 356 and 912

Fits:
Porsche 912 1965-69
Porsche 356

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61610103999

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Intermediate shaft cover cap

Fits:
Porsche 911 1978-89
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 GT3 2000-2005
Porsche 997 GT3 2007-2011

Click 'Zoom in' for large parts diagram.
Diagram ref no 29

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Loctite 574 Flange Sealant 50ml

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Oil drain plug. Porsche 911 / 964 / 993 M20 X1.5 MAGNETIC


Fits:
Porsche 911 3.2 Carrera - 1984 to 1989 Oil Drain Plug for side of crankcase
Porsche 911 - 1978 to 1984 Oil Drain plug for sump plate
Porsche 964 - 1989 to 1994
Porsche 993 - 1995 to 1998
Porsche 996 turbo / GT3 - 
Porsche 924S - 1986 to 1988
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995

Diagram ref no 22

A magnetic sump oil drain plug is a type of oil drain plug that contains a small magnet designed to attract and capture metallic particles that may be present in your engine's oil. While this type of drain plug is not exclusive to Porsche and can be used in various vehicles, it can provide several benefits, including:

Improved Engine Longevity: The magnet in the drain plug helps to capture tiny metal particles, such as iron, steel, or aluminum, that may circulate in the engine oil. Removing these particles can reduce wear and tear on engine components, potentially extending the engine's lifespan.

Enhanced Engine Performance: By reducing the presence of contaminants in the oil, a magnetic drain plug can help maintain the oil's lubricating properties, which is crucial for smooth engine operation. Clean oil can also contribute to improved fuel efficiency.

Early Detection of Problems: As the magnetic drain plug collects metallic debris, it can serve as an early warning system. By inspecting the drain plug during oil changes, you can get an idea of the engine's condition and detect any unusual wear or damage before it becomes a major issue.

Reduced Maintenance Costs: Regularly inspecting and cleaning a magnetic drain plug can prevent larger issues from developing over time. Addressing potential problems early can save you money on more extensive repairs down the road.

Peace of Mind: Knowing that you are taking steps to protect your engine from premature wear and tear can give you peace of mind as a vehicle owner. It's a relatively inexpensive and simple modification that can provide added assurance.

Easy Installation: Magnetic drain plugs are typically straightforward to install. They often replace the existing drain plug and require no special tools or modifications.

While magnetic drain plugs can offer these benefits, it's essential to remember that they are not a substitute for regular oil changes and proper maintenance. Regular oil changes with the appropriate oil and filter are still crucial for the health and longevity of your engine. Additionally, magnetic drain plugs may not capture all types of contaminants, so they should be seen as a supplementary measure rather than a comprehensive solution.

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Main crankshaft bearing shell.
Sold individually - 12 required per engine. 

Exterior Measurement: Standard. 
Interior Measurement: +0.25mm Oversize. 

Fits: 
Porsche 911 SC 3.0L 1978-1983 
Porsche 911 3.2L 1984-1989 
Porsche 959 2.8L 1987-1988 
Porsche 964 1989-1994 (All models inc. RS/Turbo) 
Porsche 993 1994-1998 (All models inc. RS/Turbo/GT2) 
Porsche 996 3.6L Turbo / GT2 2000-2005 
Porsche 996 3.6L GT3 >>2001 (360BHP Variant Only) 

Click 'Zoom in' for large parts diagram.
Diagram ref no 23

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