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Main Bearing set. Porsche 356C / 912 - 0.50 case oversize - 616100138
616100138
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356C 1963-65
Information
Set Of Main Bearings For Porsche 356C / 912.
Oversize: 0.50 mm Case
Restore correct crankshaft support, oil clearance, and dependable engine operation with this OE Match Set of Main Bearings for Porsche 356C and Porsche 912, available under references 61610013895A, 61610013895AO1, 616100138100A, and 61610013890A.
Engine: Porsche 356C and 912
Sizes available: in "MM"
0.50mm Case / STD Crank
0.50mm Case / STD Crank / Thrust +1mm
0.50mm Case / 0.25mm Crank
0.50mm Case / 0.25mm Crank / Thrust +1mm
0.50mm Case / 0.50mm Crank
Please Pick size when ordering below:
Main bearings are precision internal engine components located between the crankshaft main journals and the engine crankcase. Their purpose is to support the crankshaft while allowing it to rotate smoothly on a controlled film of pressurised engine oil. Correct bearing clearances are essential for maintaining lubrication, controlling crankshaft movement, reducing friction, and protecting the crankshaft and crankcase from excessive wear.
What This Product Does:
Symptoms Of Wear Or Failure:
Why Replacement Matters:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
616100138
The product you are viewing cross references to these numbers
Oversize: 0.50 mm Case
Restore correct crankshaft support, oil clearance, and dependable engine operation with this OE Match Set of Main Bearings for Porsche 356C and Porsche 912, available under references 61610013895A, 61610013895AO1, 616100138100A, and 61610013890A.
Engine: Porsche 356C and 912
Sizes available: in "MM"
0.50mm Case / STD Crank
0.50mm Case / STD Crank / Thrust +1mm
0.50mm Case / 0.25mm Crank
0.50mm Case / 0.25mm Crank / Thrust +1mm
0.50mm Case / 0.50mm Crank
Please Pick size when ordering below:
Main bearings are precision internal engine components located between the crankshaft main journals and the engine crankcase. Their purpose is to support the crankshaft while allowing it to rotate smoothly on a controlled film of pressurised engine oil. Correct bearing clearances are essential for maintaining lubrication, controlling crankshaft movement, reducing friction, and protecting the crankshaft and crankcase from excessive wear.
What This Product Does:
- Supports the crankshaft within the engine crankcase.
- Provides a precision running surface for the crankshaft main journals.
- Allows the crankshaft to rotate smoothly on a lubricating oil film.
- Helps maintain correct crankshaft alignment.
- Controls radial crankshaft movement.
- Helps control crankshaft end float where applicable.
- Reduces direct metal-to-metal contact and friction.
- Supports correct engine oil clearances and lubrication.
- Protects crankshaft journals against excessive wear.
- Withstands substantial combustion and rotational loads.
- Replaces worn or damaged main bearings during an engine rebuild.
- Is intended for compatible Porsche 356C and Porsche 912 engine applications.
Symptoms Of Wear Or Failure:
- Low engine oil pressure.
- Oil pressure becoming particularly low when the engine is hot.
- Deep knocking or rumbling noises from the lower engine.
- Excessive crankshaft movement or end float.
- Metallic particles or bearing material in the engine oil.
- Metallic debris in the oil filter or strainer.
- Excessive main bearing clearance during engine inspection.
- Scoring or abnormal wear of the crankshaft journals.
- Scratched, pitted, or discoloured bearing surfaces.
- Evidence of bearing overheating or oil starvation.
- Uneven or accelerated crankshaft journal wear.
- Serious internal engine damage in advanced cases.
Why Replacement Matters:
- Main bearings are fundamental to the reliability of the engine because they support and locate the crankshaft every time the engine operates. Combustion forces place considerable loads on the crankshaft, and the bearings must maintain a precise lubricated clearance while allowing smooth rotation.
- As main bearings wear, the clearance between the bearing surface and crankshaft journal can increase. Excessive clearance can reduce oil pressure, increase crankshaft movement, and accelerate wear of both the bearings and crankshaft journals. This can eventually result in knocking, poor lubrication, and deterioration of other internal engine components.
- Severe bearing wear can cause the protective oil film to break down, resulting in direct metal-to-metal contact. This may generate excessive heat, score or damage the crankshaft, contaminate the lubrication system with bearing material, and potentially cause major engine failure.
- Correct bearing sizing is especially important when rebuilding a classic Porsche 356C or Porsche 912 engine. Previous crankshaft grinding or crankcase machining can change the required bearing dimensions, meaning a standard-size bearing set may no longer provide the correct running clearance.
- Replacing worn components with the correctly sized OE Match Main Bearing Set – 61610013895A, 61610013895AO1, 616100138100A, or 61610013890A – for Porsche 356C / 912 helps restore correct crankshaft support, oil clearance, lubrication, and dependable engine performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
616100138
61610013055
The product you are viewing cross references to these numbers
Prices from: €340.72
Related products
Vehicle Group
- 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
Information
Main Crankshaft Bearing Shell Standard.
SET OF 14
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610120510
The product you are viewing cross references to these numbers
SET OF 14
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
99610120510
37189600
98710120501
99610101250
99610101252
99610101254
99610101255
99610101262
99610120507
The product you are viewing cross references to these numbers
Price: €91.33
In stock
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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
Information
Crankshaft bearing STANDARD size.
A complete set of crankshaft main bearings - these are the half-shells (upper and lower) that support the crankshaft main journals inside the engine block. The set replaces all main-bearing shells to renew the engine bottom end’s bearing surfaces.
SET OF 14 Bearing Shells
Fits:
Engine code: M96.03
Porsche 996 3.6L
Engine code: M97.21 / M97.22
Porsche 987 Cayman
Porsche 987 Boxster
Porsche 997 3.6L / 3.8L
Diagram Ref No 13.
Sold as a full set of 14 bearing shells - enough to rebuild the entire main bearing bank of a six-cylinder boxer engine.
When installed, this bearing set:
• Provides a precise, low-friction journal surface for the crankshaft to rotate on
• Maintains correct bearing clearance and oil film under high loads and RPMs, ensuring smooth rotation and reducing wear.
• Helps preserve oil pressure and lubrication flow, preventing oil starvation and bearing damage.
• Restores engine reliability and reduces risk of bearing knock, wear or failure, especially on re-built or high-mileage engines.
Over time and use, main bearings wear down - surfaces can score, bearings can become pitted, clearance can increase, oil film may degrade, leading to:
• Engine knocks or bearing rumble
• Loss of oil pressure
• Excess crankshaft play or vibration
• Accelerated wear of crank pins, journals and engine internals
Replacing main bearings with a fresh set restores factory-correct clearances and bearing surfaces, ensuring smooth crankshaft rotation, proper oil flow, and long engine life - especially important after high mileage, rebuilding, or performance modification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610120904
The product you are viewing cross references to these numbers
A complete set of crankshaft main bearings - these are the half-shells (upper and lower) that support the crankshaft main journals inside the engine block. The set replaces all main-bearing shells to renew the engine bottom end’s bearing surfaces.
SET OF 14 Bearing Shells
Fits:
Engine code: M96.03
Porsche 996 3.6L
Engine code: M97.21 / M97.22
Porsche 987 Cayman
Porsche 987 Boxster
Porsche 997 3.6L / 3.8L
Diagram Ref No 13.
Sold as a full set of 14 bearing shells - enough to rebuild the entire main bearing bank of a six-cylinder boxer engine.
When installed, this bearing set:
• Provides a precise, low-friction journal surface for the crankshaft to rotate on
• Maintains correct bearing clearance and oil film under high loads and RPMs, ensuring smooth rotation and reducing wear.
• Helps preserve oil pressure and lubrication flow, preventing oil starvation and bearing damage.
• Restores engine reliability and reduces risk of bearing knock, wear or failure, especially on re-built or high-mileage engines.
Over time and use, main bearings wear down - surfaces can score, bearings can become pitted, clearance can increase, oil film may degrade, leading to:
• Engine knocks or bearing rumble
• Loss of oil pressure
• Excess crankshaft play or vibration
• Accelerated wear of crank pins, journals and engine internals
Replacing main bearings with a fresh set restores factory-correct clearances and bearing surfaces, ensuring smooth crankshaft rotation, proper oil flow, and long engine life - especially important after high mileage, rebuilding, or performance modification.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610120904
99610120904
99610120901
911088-03
37190600
The product you are viewing cross references to these numbers
Price: €128.52
In stock
Vehicle Group
- 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
Information
Big end bearing shell. Standard size bearings
OE Match set of 12 big end bearing shells in standard size engineered to replace the original connecting rod bearings used on Porsche Boxster 986 / 987 and 911 996 / 997 and 987 Cayman platforms
Set of 12 Bearing Shells
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2006 - 2008
Porsche 996 1997 - 2005
Porsche 997 2005 - 2008
Diagram ref no 12.
Each bearing shell is produced with smooth, low-friction bearing surfaces and consistent wall thickness to maintain correct rod-to-crankshaft clearances when installed in the rod big end. The standard size designation indicates these bearings retain factory bore dimensions, ideal for engines where no crankshaft undersize machining has been performed.
Big end bearing shells provide the low-friction interface between the connecting rod and crankshaft journal. They help to support dynamic engine loads and maintain a stable lubricating oil film that protects both the rod and crankshaft from metal-to‐metal contact. With proper oil flow and clearance, these bearings help ensure reliable rotation and reduce wear under normal and high-load conditions.
Installed in pairs inside each connecting rod’s big end bore, these bearing shells support the rotating crankshaft by maintaining correct clearance and offering a durable, smooth surface for the journal to ride on. Their design promotes even oil distribution and stable hydrodynamic lubrication - essential for wear resistance, smooth engine operation, and long service life.
Big end bearings are central to engine bottom-end integrity. They endure high loads, RPMs, and constant motion. Over time or due to lubrication issues, bearings can wear, lose material, or show surface degradation - leading to increased clearances, knocking noises, reduced oil pressure, and accelerated wear of the crankshaft journal. Replacing worn bearings with OE Match shells during a rebuild restores proper oil clearances and hydrodynamic lubrication, helping protect the crankshaft and rod journals from premature wear while supporting smooth, reliable engine operation.
When to replace:
• Engine is undergoing rebuild or overhaul
• Bearing wear, noise, or rod knock detected
• After lubrication or oil starvation incident
• During high-mile preventive maintenance
• When crankshaft journals are within standard size (no undersize needed)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610312162
The product you are viewing cross references to these numbers
OE Match set of 12 big end bearing shells in standard size engineered to replace the original connecting rod bearings used on Porsche Boxster 986 / 987 and 911 996 / 997 and 987 Cayman platforms
Set of 12 Bearing Shells
Fits:
Porsche 986 Boxster 1997 - 2004
Porsche 987.1 Boxster 2005 - 2008
Porsche 987C.1 Cayman 2006 - 2008
Porsche 996 1997 - 2005
Porsche 997 2005 - 2008
Diagram ref no 12.
Each bearing shell is produced with smooth, low-friction bearing surfaces and consistent wall thickness to maintain correct rod-to-crankshaft clearances when installed in the rod big end. The standard size designation indicates these bearings retain factory bore dimensions, ideal for engines where no crankshaft undersize machining has been performed.
Big end bearing shells provide the low-friction interface between the connecting rod and crankshaft journal. They help to support dynamic engine loads and maintain a stable lubricating oil film that protects both the rod and crankshaft from metal-to‐metal contact. With proper oil flow and clearance, these bearings help ensure reliable rotation and reduce wear under normal and high-load conditions.
Installed in pairs inside each connecting rod’s big end bore, these bearing shells support the rotating crankshaft by maintaining correct clearance and offering a durable, smooth surface for the journal to ride on. Their design promotes even oil distribution and stable hydrodynamic lubrication - essential for wear resistance, smooth engine operation, and long service life.
Big end bearings are central to engine bottom-end integrity. They endure high loads, RPMs, and constant motion. Over time or due to lubrication issues, bearings can wear, lose material, or show surface degradation - leading to increased clearances, knocking noises, reduced oil pressure, and accelerated wear of the crankshaft journal. Replacing worn bearings with OE Match shells during a rebuild restores proper oil clearances and hydrodynamic lubrication, helping protect the crankshaft and rod journals from premature wear while supporting smooth, reliable engine operation.
When to replace:
• Engine is undergoing rebuild or overhaul
• Bearing wear, noise, or rod knock detected
• After lubrication or oil starvation incident
• During high-mile preventive maintenance
• When crankshaft journals are within standard size (no undersize needed)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610312162
99610312162
The product you are viewing cross references to these numbers
Price: €89.25
In stock