Main Bearing Set For BMW N55 B30A, N53 B30A, N52 B30A - MB7776SI

In stock
(Only %1 left)
As low as $82.75
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
Position 1:
64.98 / 64.96 mm
2.5583 / 2.5575 inch

Positions 2,3,5,6,7,4:
55.98 / 55.96 mm
2.2039 / 2.2032 inch
Position 1:
70.02 / 70.00 mm
2.7567 / 2.7559 inch

Positions 2,3,5,6,7,4:
61.02 / 61.00 mm
2.4023 / 2.4016 inch
Position 1:
19.8 mm
0.780 inch

Positions 2,3,5,6,7:
18.8 mm
0.740 inch

Position 4:
23.9 mm
0.943 inch
2.508 mm
0.0987 inch
Main Bearing Set For BMW N55 B30A, N53 B30A, N52 B30A - MB7776SI

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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