Main Bearing Set For General Motors 262, 267, 302, 307, 327, 350 - MB 557SI

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King Bearings' bi-metal material blends aluminum with 2.5-3% silicon, providing strength. Ideal for medium-load engines or nodular cast iron crankshafts, it excels as an OE replacement.
Commonly use for Main Bearing Set For GENERAL MOTORS 262, 267, 302, 307, 327, 350 - MB 557SI
Crankshaft Dim. Housing Dim. Length Thickness
Positions 1,2,3,4:
62.21 / 62.19 mm
2.4493 / 2.4484 inch

Position 5:
62.20 / 62.18 mm
2.4488 / 2.4479 inch
67.09 / 67.07 mm
2.6415 / 2.6406 inch
Positions 1,2,3,4:
20.4 mm
0.805 inch

Position 5:
43.7 mm
1.722 inch
2.426 mm
0.0955 inch
Main Bearing Set For GENERAL MOTORS 262, 267, 302, 307, 327, 350 - MB 557SI
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Performance features

Material features

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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