What does the '1.0' size mean for these bearings?

The '1.0' designation means these bearings are 0.010 inches undersize. This is important if your engine's crankshaft journals have been machined down to this size during a rebuild to correct wear or runout.

Why are main bearings important in an engine?

Main bearings support the crankshaft within the engine block. They are crucial for maintaining the crankshaft's alignment and allowing it to rotate smoothly under high loads, preventing damage and ensuring proper oil flow.

What kind of material is used for these bearings?

King Engine Bearings uses a specialized overlay material applied in multiple layers. This design aims to provide good wear resistance and compatibility with different types of engine oil.

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Specifications

Brand: King Engine Bearings
Part #: MB621SI010

King Engine Bearings Ford 415 (Size 1.0) Main Bearing Set

Name: King Engine Bearings Ford 415 (Size 1.0) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-415-size-1-0-main-bearing-set-t14-432579
Price: 45.06 USD
Availability: BackOrder

$45.06

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Main bearing set for Ford 415 engines.
Size is 1.0, meaning 0.010 inches undersize.
Helps ensure proper crankshaft support and alignment.
Features a multi-layer overlay material for wear resistance.

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About this part

Product Details

King Engine Bearings is known for making well-built engine components. This main bearing set, part number MB621SI010, is a 1.0 size bearing set for Ford 415 engines. Main bearings are critical for keeping your crankshaft properly supported and aligned within the engine block. They handle the immense forces generated during combustion and rotation, ensuring smooth operation and preventing premature wear.

This set is designed to meet the demands of engine rebuilding. The 1.0 size indicates these bearings are 0.010 inches undersize, which is important if your crankshaft journals have been machined to this specification during a rebuild. Using the correct undersize bearing ensures proper oil clearance, which is vital for lubrication and bearing longevity. King uses a specialized overlay material that is applied in multiple layers, offering good wear resistance and compatibility with various oil types.