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Your Vehicle // Porsche // 944 (1982-1991) // Any
OE Match
OE Match main bearing set for Porsche 356A / 356B 1600 / S engines with a 50mm crank. This version combines a 0.25mm outer oversize with a 0.75mm inner undersize.
Fits
- Porsche 356A / 356B 1600 / S
Diagram Ref No 29
What This Product Does
The main bearings provide the supporting interface between the crankshaft journals and the crankcase. Working with the engine lubrication system, they accommodate crankshaft rotation and distribute operating loads. Correctly selected dimensions are essential to establishing the specified running clearance during an engine rebuild.
Functions
- Support the crankshaft within its crankcase mounting positions.
- Provide a bearing surface for lubricated journal rotation.
- Distribute forces transmitted through the crankshaft.
- Help establish the required oil clearance when matched to measured components.
Technical Details
- Supplied part reference: 54610190185.
- Crank specification: 50mm.
- Crankcase fit: first oversize, 0.25mm outer.
- Crankshaft fit: third undersize, 0.75mm inner.
- Internal diagram application identifies 1600 / S engines.
- Brand: OE Match.
Symptoms of Fault
- Rumbling or knocking from the engine, particularly under load.
- Reduced oil pressure, including pressure falling as the engine warms.
- Metallic particles found during oil or filter inspection.
- Scoring or uneven wear discovered on dismantled bearing surfaces.
These findings require diagnosis rather than confirming a bearing fault on their own. Lubrication problems, contamination and worn crankshaft journals should be investigated before new bearings are installed.
Why Replacement Matters
Renewing worn main bearings forms part of rebuilding the crankshaft support assembly. The replacement dimensions must suit both the crankcase housing and the crankshaft journals; choosing by vehicle model alone is insufficient. Inspect the supporting components and investigate any previous lubrication failure before reassembly to reduce the likelihood of recurring damage.
FAQs
Is this a standard-dimension set?
No. It is specified with 0.25mm outer oversize and 0.75mm inner undersize dimensions.
What needs measuring before installation?
Check the crankshaft journals, crankcase bearing housings and resulting oil clearances against the applicable engine specifications.
Does low oil pressure prove the bearings are worn?
No. Bearing wear is one possible cause; the lubrication system and the condition of related components also need assessment.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
54610190185
The product you are viewing cross references to these numbers
- Porsche 356A 1955-59
- Porsche 356B 1959-63
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0.25mm oversize.
Fits:
Porsche 924S 1986-88
Porsche 928 178-86
Porsche 944 1985-91
Porsche 986 1992-95
An oversize bearing for a reground (undersize) crankshaft.
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
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12 Month Warranty
Worldwide Delivery
The OE Match Main Bearing Set, Standard is a precision-engineered replacement bearing set designed to support the crankshaft within the engine block while maintaining correct oil clearance and rotational stability. Manufactured to OE specifications, these standard-size main bearings provide reliable support for the crankshaft, ensuring smooth operation and effective lubrication under all engine operating conditions.
Fits:
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Diagram Ref No 26
Main bearings are among the most critical internal engine components, carrying substantial loads while allowing the crankshaft to rotate freely. This OE Match bearing set is ideal for engine rebuilds, overhauls and repairs where standard-size crankshaft journals remain within factory tolerances.
What This Product Does:
- Supports the crankshaft within the engine block.
- Maintains precise crankshaft alignment during operation.
- Provides a low-friction bearing surface for crankshaft rotation.
- Maintains critical oil clearances for lubrication.
- Helps distribute engine loads evenly throughout the crankshaft assembly.
- Supports smooth engine operation and long-term durability.
Symptoms Of Wear Or Failure:
- Low engine oil pressure.
- Knocking, rumbling or deep engine noises from the crankshaft area.
- Metal particles or bearing material found in the engine oil.
- Excessive crankshaft movement or end play.
- Increased engine vibration.
- Premature wear of crankshaft journals.
- Oil contamination from bearing material breakdown.
- Catastrophic engine failure in severe cases.
Why Replacement Matters:
- Main bearings operate under extreme loads, temperatures and continuous lubrication demands. Over time, normal wear, inadequate lubrication, contamination or excessive engine stress can cause bearing surfaces to deteriorate. Once bearing clearances exceed specification, oil pressure can decrease and crankshaft support may become compromised.
- Worn main bearings can lead to crankshaft damage, reduced engine efficiency and potentially catastrophic engine failure if left unaddressed. During engine rebuilds or major repairs, replacing the main bearings is essential to restore proper oil clearances, maintain crankshaft stability and ensure long-term engine reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410190100
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
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Fits:
Porsche 924 1976-85
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram Ref No 27.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
113415511
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 924 S 1986-88
Porsche 944 1982-91
Porsche 968 1992-95
Diagram Ref No 8.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810314315
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Shop Securely
12 Month Warranty
Worldwide Delivery
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed