Main Bearing Set For GENERAL MOTORS 366, 396, 402, 427, 502 - MB5274SI

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As low as $135.50
King Bearings' bi-metal SI material blends Aluminum with 2.5-3% Silicon, providing strength. Ideal for medium-load engines, particularly engines using nodular cast iron crankshafts. It excels as a Lead-free OE replacement Bearing.
Commonly use for medium-load engines particularly ones using nodular cast iron crankshafts
Crankshaft Dim. Housing Dim. Length Thickness
Positions 1,2,3,4:
69.84 / 69.81 mm
2.7495 / 2.7485 inch

Position 5:
69.82 / 69.79 mm
2.7488 / 2.7478 inch
75.13 / 75.11 mm
2.9580 / 2.9570 inch
Positions 1,2,3,4:
26.5 mm
1.043 inch

Position 5:
46.1 mm
1.815 inch
2.629 mm
0.1035 inch
Bearings are designed with .020" oversize diameter, allowing to repair the housing of block by line honing block
Main Bearing Set For GENERAL MOTORS 366, 396, 402, 427, 502 - MB5274SI
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Tech Features

Aluminum Based
aluminum base
Bi Metal Aluminum material

Lead free Aluminum based material used for low to heavy load engines

Lead free
Lead Free
Environmentally safe composite

A lead-free bearing material prioritizes environmental sustainability and safety, utilizing alternative compounds to achieve optimal performance in diverse applications.

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