Crankshaft & Parts

Main bearing set, 50mm crank, 1st 0.25mm Case / 3rd 0.75mm Inside.

Fits:
Porsche 356A / 356B 1600 / S

Diagram Ref No 29

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54610190185

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Main Crankshaft Bearing Set, Standard.
The OE Match Main Crankshaft Bearing Set, Standard is a premium-quality replacement engine bearing kit designed to support the crankshaft and maintain precise rotational alignment in compatible Porsche engines. Manufactured to OE specifications for fit, material quality and durability, this standard-size main bearing set restores the correct bearing clearances between the crankshaft and engine block, ensuring optimum oil pressure, smooth crankshaft rotation and long-term engine reliability.

Fits:

• Porsche 356A 1955-59
• Porsche 356B 1959-63  

Diagram Ref No 13

Manufactured from premium tri-metal bearing materials with a precision-machined bearing surface, each bearing shell is engineered to provide exceptional load-carrying capacity, low friction characteristics and excellent resistance to wear under demanding operating conditions. Designed for direct OE-style installation, this standard-size bearing set is ideal for engine rebuilds where the crankshaft journals remain within original factory specifications.  

What This Product Does:

• Supports the crankshaft within the engine block.
• Maintains precise crankshaft bearing clearances.
• Allows smooth, low-friction crankshaft rotation.
• Maintains correct engine oil pressure.
• Reduces friction and wear between the crankshaft and engine block.
• Supports reliable engine lubrication.
• Restores factory engine operating tolerances.
• Forms an essential part of the engine bottom-end assembly.

Symptoms Of Wear Or Failure:

• Low engine oil pressure.
• Knocking or rumbling noises from the lower engine.
• Excessive crankshaft movement.
• Metal particles present in the engine oil or oil filter.
• Increased engine vibration.
• Accelerated wear of the crankshaft journals.
• Poor lubrication of internal engine components.
• Engine overheating due to increased friction.
• Loss of engine performance.
• Catastrophic engine failure in severe cases.

Why Replacement Matters:

• The main crankshaft bearings support the crankshaft while maintaining a thin film of pressurised engine oil between the bearing surface and the crankshaft journals. They are subjected to enormous combustion loads, constant rotational forces and continuous lubrication. Over time, normal wear, contamination or insufficient lubrication can damage the bearing surfaces, increasing bearing clearances and reducing oil pressure.
• Worn main bearings can lead to excessive crankshaft movement, reduced lubrication efficiency and accelerated wear of critical engine components. If left unresolved, bearing failure can result in severe crankshaft damage and complete engine failure.
• Replacing worn bearings with the OE Match Main Crankshaft Bearing Set restores the engine's bottom-end integrity, correct bearing clearances and stable oil pressure. Manufactured to OE standards using premium tri-metal bearing construction, this standard-size bearing set provides factory-style fitment, exceptional durability and dependable long-term performance, making it the ideal choice for Porsche engine rebuilds and professional restoration projects.

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54610190100

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Oil seal for crankshaft, DG 48x65x10/1.


Fits:
Porsche 356 /A/B/C (1950 to 1965)
Porsche 912 (1965 to 1969)

Click 'Zoom in' for large parts diagram.
Diagram ref no 47

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99911301250

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Crankshaft Oil Seal 

Protect your classic Porsche engine from oil leaks with this Crankshaft Oil Seal. This high-quality oil seal is manufactured to OE specifications, providing a reliable seal around the crankshaft where it exits the engine casing. Constructed from durable, oil-resistant materials, it is designed to withstand high temperatures, engine oil and constant crankshaft rotation while delivering long-lasting performance.

Fits:

• Porsche 356 1950-55
• Porsche 356A 1955-59
• Porsche 356B 1959-63
• Porsche 356C 1963-65
• Porsche 912E 4CYL 1976
  

Diagram ref no 47

Whether you're rebuilding an engine, replacing a leaking seal or carrying out preventative maintenance, this OE Match crankshaft oil seal offers dependable sealing performance and factory-style fitment.

What Does the Crankshaft Oil Seal Do?

The crankshaft oil seal prevents engine oil from escaping where the crankshaft passes through the engine case while keeping dirt, dust and moisture away from internal engine components.

Its key functions include:

• Preventing engine oil leaks
• Maintaining correct engine oil pressure
• Protecting the crankshaft opening from contamination
• Supporting long-term engine reliability

A correctly functioning seal is essential for keeping the engine clean, lubricated and operating efficiently.

Why Do Crankshaft Oil Seals Fail?

Over time, the sealing lip is subjected to continual contact with the rotating crankshaft, as well as heat and exposure to engine oil.

Common causes of failure include:

• Age-related hardening of the seal
• Heat cycling
• Wear of the sealing lip
• Oil contamination
• Incorrect installation
• Crankshaft surface wear

As the seal deteriorates, engine oil can begin to seep or leak from the crankshaft opening.

When Should It Be Replaced?

Replacement is recommended if:

• Oil is visible around the crankshaft area
• The seal shows signs of hardening or cracking
• The engine is being rebuilt
• The flywheel or pulley has been removed
• Preventative maintenance is being carried out on an older engine

Replacing the seal during engine work is inexpensive preventative maintenance that can help avoid future oil leaks and unnecessary labour costs.

Porsche 356 & 912 Engine Seals

Engine oil seals play a vital role in maintaining the reliability of classic Porsche engines. As rubber seals age, they gradually lose their flexibility and sealing ability, allowing oil leaks to develop that can affect engine cleanliness and reliability.

Replacing crankshaft oil seals during routine servicing or engine rebuilds helps maintain correct lubrication, reduce oil loss and protect valuable engine components. OE Match seals are manufactured to provide factory-style fitment and dependable long-term performance, making them an ideal choice for restoration and maintenance projects.

Benefits of Replacing the Crankshaft Oil Seal

• Prevents engine oil leaks
• Maintains proper engine sealing
• Protects against dirt and moisture ingress
• Ideal during engine rebuilds
• Long-lasting, oil-resistant materials       

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99911301250

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Speedi Sleeve for Crank Pulley Sealing Surface. Fits 911 1974-89 , 930



Fits: Crankshaft Pulley End

Fits:
Porsche 911 1974-89
Porsche 930 Turbo

Speedi Sleeves to Repair Worn, Grooved Seal Surfaces

Over time, sealing surfaces will become grooved, making a good seal impossible.The most economical and fastest method of shaft repair is to install the CR Speedi Sleeve. Speedi Sleeve is a precision engineered piece of stainless steel. It's ultra-thin wall design allows it to be used without changing the sel size ans its finish is perfect for lip sealing applications. Speedi Sleeve is built with removable installation flange. The installation tool included in every box allows the seal to be put in. This avoids the possibility of distortion from heat or other installation methods.

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91110299189

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Woodruff key 5,0 x 6,5 - various applications

Fits:
Porsche 356 - 1950 to 1965 (intermediate shaft)
Porsche 928 - 1978 to 1995 (oil pimp drive pulley)
Porsche 944 2.5ltr - 1982 to 1984 (crankshaft pulley)
Porsche 955 Cayenne S / turbo - 2003 to 2006 (crankshaft pulley and oil pump drive pulley)
Porsche 957 Cayenne S / GTS / turbo - 2007 to 20010 (crankshaft pulley)
Porsche 957 Cayenne S / GTS / turbo - 2007 to 20010 (crankshaft pulley)
Porsche 970 Panamera 4.8ltr V8 - 2009 to 2016 (crankshaft pulley)

Diagram ref no 3

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N0127131

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Woodruff key for pulley. 6 x 9.



Fits:
Porsche 356 1950-1965 All Types
Porsche 912 1965-69

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

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N0127091

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