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Original Porsche Part Genuine Porsche part 53901151
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
Two required per car. Sold each.

Fits:
Porsche 356 preA - 1950–1955
Porsche 356 A T1 - 1955–1957
Porsche 356 A T2 - 1958–1959
Porsche 356 B T5 - 1960–1961
Porsche 356 B T6 - 1962–1963
Porsche 356 C - 1964–1965/66
Porsche 912 - 1965–1969
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53901152
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Two required per car. Sold each.

Fits:
Porsche 356 preA - 1950–1955
Porsche 356 A T1 - 1955–1957
Porsche 356 A T2 - 1958–1959
Porsche 356 B T5 - 1960–1961
Porsche 356 B T6 - 1962–1963
Porsche 356 C - 1964–1965/66
Porsche 912 - 1965–1969
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53901152
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Fits:
Porsche 356
Porsche 356 A T1
with 3-piece crankcase
This ring Holds the seal behind the V-belt pulley.
Sand cast and CNC machined.
Click 'Zoom in' for large parts diagram.
Diagram ref no 45
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53901154
The product you are viewing cross references to these numbers
- Porsche 356 1950-55
- Porsche 356A 1955-59
Billet Aluminium Oil Drain / Strainer Cover
Upgrade one of the most commonly disturbed sealing surfaces
on your classic Porsche engine with this OE Match Billet Aluminium Oil Drain
and Strainer Cover. 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.
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 fitted to the underside of the engine and closes the opening for the engine oil strainer.
The strainer itself helps prevent larger particles and contaminants from circulating through the engine lubrication system, while the cover provides the sealing surface required to contain the engine oil.
Because the cover is removed during servicing and oil strainer maintenance, maintaining a flat and correctly sealed surface is particularly important.
A correctly fitted oil strainer cover helps:
- Seal the engine oil strainer opening
- Prevent engine oil leaks
- Secure the oil strainer assembly
- Provide access during oil system servicing
- Maintain the integrity of the engine lubrication system
Why Do Original Oil Strainer Covers Fail?
Original-style covers can become distorted after years of use and repeated removal and installation.
One of the most common problems is deformation around the mounting holes caused by repeated tightening of the retaining nuts. Once the plate is no longer completely flat, the gasket may struggle to seal evenly against the engine case.
Other causes of deterioration can include:
- Repeated tightening and removal
- Over-tightening of mounting hardware
- Distortion around the stud holes
- Damage to the sealing surface
- Corrosion and general age
- Scratches or previous incorrect installation
A distorted cover can contribute to the familiar oil seepage sometimes found around the bottom of older Porsche 356 and 912 engines.
Why Upgrade to Billet Aluminium?
The main advantage of this upgraded cover is its CNC-machined billet aluminium construction.
Rather than relying on a thinner plate that can become distorted over time, the billet design provides a rigid and accurately machined sealing surface.
Benefits include:
- CNC machined from aluminium
- Perfectly flat contact surface
- Increased rigidity
- Reduced tendency to distort
- Improved support for the sealing gasket
- Durable replacement for an ageing original cover
- Black finish for a discreet appearance
- Reuses the original mounting studs
For engines that are regularly serviced or have experienced persistent seepage around the strainer cover, upgrading to a rigid billet version can provide a more dependable foundation for achieving a good seal.
Installation
The 53901150 cover has been designed to fit using the original engine case studs.
There is no requirement to replace the standard studs with longer versions, simplifying installation and maintaining the original mounting arrangement.
Oil Strainer Covers, Drain Plates & Engine Lubrication Parts
Oil leaks around the lower engine area are a common concern when maintaining older Porsche 356 and 912 engines. While replacing gaskets is often the first step, a gasket cannot always compensate for a cover that has become warped or distorted.
A CNC-machined billet aluminium oil strainer cover provides a rigid, accurately machined sealing surface and is therefore a useful upgrade during an engine rebuild, restoration or routine oil system refurbishment.
When replacing the oil strainer cover, it is also worthwhile inspecting the strainer, gaskets, mounting hardware and surrounding sealing surfaces. Correct installation and tightening are important to avoid damaging components and to achieve an effective seal.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
53901150
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
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
Related, superseded, cross reference or alternative numbers for comparison.
53901150
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65