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OE-Replacement Bi-metal For Chevrolet L20, LS1/2/4/6 (HOUSING BORE + .01 - MB5766SI

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PartNo
MB5766SI
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Racing Main Bearings Set For Chevrolet LS Gen III IV / GM Vortec - Coated Tri-Metal - MB5013XPC
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OE-Replacement Bi-metal For Chevrolet L20, LS1/2/4/6 (HOUSING BORE + .01 - MB5766SI
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OE-Replacement Bi-metal For GM Vortec /LS-SERIES GEN III IV - MB5875SI
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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
65.01 / 64.99 mm
2.5593 / 2.5588 inch		 70.14 / 70.13 mm
2.7614 / 2.7609 inch		 Positions 1,2,4,5:
20.4 mm
0.805 inch

Position 3:
26.2 mm
1.031 inch		 2.553 mm
0.1005 inch
Bearings are designed with .010" oversize diameter, allowing to repair the housing of block by line honing block
Main Bearing Set For CHEVROLET L20, LS1/2/4/6 (HOUSING BORE + .01 - MB5766SI
Suitable for models
Suitable for engines
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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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