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- Porsche 356A 1955-59
- Porsche 356B 1959-63
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
54610190100
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche Cayman 2.7L 987C 2006-08
14 per engine. Price is each
Fits:
Porsche Boxster 986 2.7L M96.22 / M96.23
Porsche Boxster 986 3.2L M96.21 / M96.24
Porsche 996 3.4L M96.01 / M96.02 / M96.04
Porsche Boxster 987 2.7L M97.20
Porsche Boxster 987 3.2L M96.26
Porsche Cayman 987C 2.7L M97.20
Porsche Boxster 986 2.5L M96.20*
Porsche Boxster 987 2.7L M96.25*
Diagram ref. 13.
Important fitment information – please read before ordering:
Please be aware that some early 2.5L 986 Boxster models (*) were fitted with main bearing shells with the alignment/locating tab in the centre, as opposed to offset to the side, which is what this listing is for. Please check your existing bearing shells before ordering. If you have centre-aligned bearing shells, this product is not suitable and is no longer offered by Porsche as a replacement part.
In addition, some 2.5L models may be fitted with the earlier-style crankcase carrier, meaning the bearing shells required have the alignment tab on the right, not the left as is the case with this listing. Please ensure you check your existing shells before ordering. If the alignment tab on your existing shells is located on the right, please use part no. 99610113164 instead.
Additionally, for 2005 and 2006 2.7L 987 Boxster models (M9625 engine code) (*), the existing bearing shells are no longer offered by Porsche. These have the locating tab on the opposite side, meaning these bearings are incompatible. In order to fit these bearings, the crankcase carrier will need to be updated to the later style, part no. 99610100709.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610120510
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Price is each. 12 Bearing Shells per engine.
Original Porsche Standard Size Bearings
Price Shown Is For Each Bearing
Fits:
Porsche 986 Boxster
Porsche 987 Boxster
Porsche 996
Porsche 997
Click 'Zoom in' for large parts diagram.
Diagram Ref No 12.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610312162
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche Cayman 2.7L 987C 2006-08
- Porsche 914 (1970-1976)
Fits:
Porsche 986 Boxster 1997-04 engines M96.20 / M96.22 / M96.23
Porsche 986 Boxster S 2001-04 M96.21 / M96.24
Porsche 987 Boxster 2004-08 engines M96.25 / M97.20
Porsche 987 Boxster S 3.2L >>2006 engines M96.26
(not for 3.4L engines)
Porsche 987C Cayman 2004-08 engines M97.20
Porsche 996 C2 / C4 >>2001 engines M96.01 / M96.02 / M96.04
Click 'Zoom in' for large parts diagram.
Diagram Ref No 24.