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Crankcase Parts

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DISPLAYING 33 to 48 (of 89 products)
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99911302951
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Crankshaft seal rear. DG 60 X 80 X 10/1.

Fits:
Porsche 356 / 356A 1950-59
Porsche 356 B/ 356 C 1600-SC 1965-65
Porsche 912 1965-69

Click 'Zoom in' for large parts diagram.
Diagram ref no 48

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99911302951
99911302950
81-17085-00
811708500

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99911302951/1
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Product Information
Crankshaft seal rear. DG 60 X 80 X 10/1.

Fits:
Porsche 356 / 356A 1950-59
Porsche 356 B/ 356 C 1600-SC 1965-65
Porsche 912 1965-69

Click 'Zoom in' for large parts diagram.
Diagram ref no 48

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99911302951
99911302950
99911302951

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SR124
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Stomski Racing SR124 Engine case splitter for Porsche 911

stomski

No more hammering, chiseling, swearing, heating, prying or praying to get an 911 engine case apart. STOMSKI RACING'S SR124 ELEGANTLY and GENTLY separates the engine case halves and not only shortens the process of engine tear-down, but it also protects what doubtlessly is an expensive asset- the engine case itself. The rare #s matching early 911S sand-cast aluminum case, or the impossible to find 911 GT3 RSR case, or the early magnesium case that seems so fragile, all can NOW be protected from the threat of the block of wood and lead hammer, or the torch, or the pry-bar and chisel.
SR124 includes a CNC precision machined aluminum platform that you bolt to four head studs (ideally over #2 or #5) using the included thumbscrews. An over-sized drive-screw (stainless steel) is then threaded through the platform to mate with a high-load bearing in our specially designed rod cap that presses against the wrist pin of #2 or #5 connecting rod that is at bottom-dead-center. As you slowly use a wrench or ratchet to tighten the drive-screw, the torque of the SR124 splitter is evenly distributed through the entire crankshaft, pressing against ALL 8 main bearings. Once the slack is taken up, only GENTLE effort on the drive screw is required to split even the most belligerent of cases.
The SR124 platform is designed to work on all Mezger 911s (2.0 through 997) and includes Delrin inserts/sleeves that protect the head studs from scratches or dings.
93010090104/2
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Product Information
Engine crankcase gasket set.

Fits:
Porsche 911 - 1978 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998

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93010090104
93010090104

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90006010601/1::1
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Product Information
Engine crankcase stud, BM8FO x 22. 
Sold each.

oematch

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Porsche 996 GT3 3.6L 1999-05
Porsche 997.1 Turbo 2007-09
Porsche 997 GT3 3.6L 2006-09
Porsche 914-6 1970-76

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Diagram ref no 4

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90006010601
99906200702
90006010601

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90006010601::1
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Product Information
Engine crankcase stud, BM8FO x 22. 
Sold each.

porsche

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Porsche 996 GT3 3.6L 1999-05
Porsche 997.1 Turbo 2007-09
Porsche 997 GT3 3.6L 2006-09
Porsche 914-6 1970-76

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

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90006010601
99906200702
90006010601

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90006010201
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Product Information
Engine crankcase stud, M8 x 52. RIGHT.
Sold each.

porsche

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo 2001-05
Porsche 996 GT3 3.6L 1999-05
Porsche 997.1 Turbo 2007-09
Porsche 997 GT3 3.6L 2006-09
Porsche 914-6 1970-76

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Diagram ref no 11

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90006010201
90006010201
99906213802

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PCG00113300
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Product Information
Engine oil drain plug.

porsche

Fits:
Porsche 912 1965-69
Porsche 356 1950-59 1300 / 1500 / 1600 (not GS or GT)
Porsche 356 1960-65 1600 SC

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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PCG00113300
53901133

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PCG00113300/1
Product Information
Product Information
Engine oil drain plug.

Fits:
Porsche 912 1965-69
Porsche 356 1950-59 1300 / 1500 / 1600 (not GS or GT)
Porsche 356 1960-65 1600 SC

Diagram ref no 27

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PCG00113300
53901133
1613800200

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Special Order item
90012301130
Product Information
Product Information
Engine oil sump plug washer. 

porsche

Fits:
Porsche 911 1965-89

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90012301130
90012301130

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91110717603
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Engine Oil Sump Plug.

porsche

Fits:
Porsche 911 1965-83
Porsche 928 1978 Only

Click 'Zoom in' for large parts diagram.
Diagram ref no 41

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91110717603
91110717603
91110717602
90110717600
90110717601

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91110717603/1
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Engine oil sump plug. Galvanized. M22 x 1.5 x 13.5 Magnetic

Fits:
Porsche 911 1965-83
Porsche 928 1978 Only

Diagram ref no 41


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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91110717603
91110717603
91110717602
90110717600
90110717601

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SR052
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Product Information
Piston / case squirter cleaner for Porsche 911

stomski

At last an easy way to clean and check the case/piston squirters on 911 cases. Use this precise tool with compressed air and your air gun to force the squirters open and clean them out. This tool seals the galley off at each end and allows the air to be pushed through the squirter orifice. No need to remove/replace squirters or guess whether they are clear.

Anodized aluminum/brass.

Available with or without an air gun.
90110138600/2
Product Information
Product Information
Engine sump plate cover. 


adapt

Fits:
Porsche 911 - 1965 to 1983
Engine size - 2.0Ltr through to 3.0ltr

Are you tired of that old pressed steel engine sump/cover plate, is yours covered in rust and dents?  We have the solution for you.  

This CNC machined aluminium cover plate is anodized in dark grey to bring back some beauty to the underside of the air cooled 911 engines.  This sump plate is stiffer than the original to reduce the chance of leaks. This comes with a flush mount sump plug and comes as a complete kit with nuts, washers and gaskets.  It only takes a short time to install at your next oil change.

Please Note
Does not suit modified engines with the later 993/turbo oil pump/screens (curved).  



Related reference numbers
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90110138600
93010190200

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53901150/1
Product Information
Product Information

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.




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Related, superseded, cross reference or alternative numbers for comparison.

53901150
53901150

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53901150/2
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Product Information

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.



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Related, superseded, cross reference or alternative numbers for comparison.

53901150
53901150

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DISPLAYING 33 to 48 (of 89 products)
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Also found on these pages
About Crankcase Parts

Precision Crankcase Parts – Strength, Balance, and Reliability for Porsche Engines

The crankcase forms the core of every Porsche engine, housing key rotating components such as the crankshaft, bearings, and connecting rods. It provides structural rigidity, oil containment, and precise alignment for the engine’s moving parts — making it critical to both performance and longevity.

At Design911, we offer a wide range of precision-engineered crankcase components, including bearing shells, seals, breather valves, dowels, plugs, and fasteners, all manufactured to exacting tolerances. Each part is crafted from high-strength, heat-resistant materials to ensure lasting durability and performance under the most demanding driving conditions.

Whether you’re restoring an air-cooled 911 or maintaining a modern 992, our manufacturer-quality crankcase parts ensure perfect fitment, oil-tight sealing, and reliable performance for years to come.

What Do Crankcase Parts Do?

Crankcase components perform vital structural and lubrication roles within the engine, protecting internal parts and maintaining pressure balance.

Core Functions:

  • House and support the crankshaft, connecting rods, and bearings.
  • Contain and distribute oil to lubricate moving components.
  • Maintain structural rigidity to prevent vibration and misalignment.
  • Control crankcase ventilation to reduce oil contamination and pressure build-up.

In performance and classic Porsche engines alike, the crankcase ensures stability, smooth rotation, and reliable oil management — key to consistent power and reduced wear.

Why Do Crankcase Parts Fail?

Over time, crankcase components can degrade due to heat cycles, vibration, oil contamination, and mechanical fatigue. When neglected, these failures can lead to oil leaks, pressure imbalance, and even catastrophic engine damage.

Common Causes of Failure Include:

  • Oil seal wear causing leaks and pressure loss.
  • Bearing fatigue from prolonged high load or low oil pressure.
  • Warped surfaces due to overheating or corrosion.
  • Clogged breather valves causing pressure build-up and oil blow-by.
  • Fastener fatigue leading to structural loosening or vibration.

Replacing worn crankcase parts during an engine rebuild or maintenance interval is essential to preserve oil control, alignment, and crankshaft integrity.

Why Replace with Precision-Engineered Crankcase Parts?

High-quality crankcase components ensure your Porsche engine retains its strength, sealing capability, and precise alignment — essential for performance, reliability, and longevity.

Key Benefits:

  • Restores internal alignment for smooth crankshaft rotation.
  • Prevents oil leaks and pressure loss, maintaining engine performance.
  • Improves lubrication control and bearing life.
  • Reduces vibration and noise caused by worn or loose components.
  • Crafted from corrosion- and heat-resistant materials for lasting strength.
  • Perfect fitment and tolerance for air-cooled and water-cooled Porsche engines.

Engineers and restorers trust precision crankcase parts to maintain Porsche’s legendary reliability and mechanical balance — whether on the road or the track.

Highlights:

  • Comprehensive range of crankcase seals, bearings, bolts, and breather components.
  • Precision-machined parts designed for high-load, high-temperature performance.
  • Manufacturer-quality materials and tolerances.
  • Perfect for classic engine restorations and high-performance rebuilds.
  • Improves oil management, structural rigidity, and reliability.
  • Compatible with air-cooled and modern Porsche engine architectures.

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