What does the +0.50mm size mean for these bearings?

The +0.50mm designation indicates that these bearings are slightly larger than standard size. This is typically used when the crankshaft journals have been machined down by 0.50mm during an engine rebuild to ensure a proper fit and oil clearance.

What is the benefit of a bi-metal aluminum material?

Bi-metal construction typically involves a steel backing for strength and an aluminum alloy overlay for good bearing properties like conformability and embeddability. This combination offers a good balance for engine bearing performance.

Are these bearings suitable for high-performance or heavy-duty use?

These bearings are noted as ideal for medium-load engines. For extreme performance or very heavy-duty applications, it's always best to consult the manufacturer's specific recommendations for your engine build.

King Engine Bearings Ford 415 (Size +0.50mm) Main Bearing Set

Specifications

Brand: King Engine Bearings
Part #: MB621SI0.5
UPC: 611500450495

King Engine Bearings Ford 415 (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Ford 415 (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-415-size-0-50mm-main-bearing-set-t14-771064
Price: 54.12 USD
Availability: BackOrder

$54.12

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King Engine Bearings MB621SI0.5 Main Bearing Set for Ford 415 engines. Size +0.50mm. Lead-free composite, bi-metal aluminum.

Key Features

Fits a range of Ford vehicles including E-350 Super Duty, Excursion, and F-250 Super Duty.
Main bearing set sized at +0.50mm for Ford 415 engines.
Constructed with a bi-metal aluminum material.
Features a lead-free composite that is environmentally safe.
Ideal for medium-load engine applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

King Engine Bearings has been a specialist in engine bearings since 1960, focused on supplying the highest quality bearings. This main bearing set, part number MB621SI0.5, is designed for Ford 415 engines and is sized at +0.50mm. It's a well-built option for medium-load engines, fitting a range of Ford vehicles like the E-350 Super Duty, Excursion, and F-250 Super Duty.

This set features a bi-metal aluminum material construction. The lead-free composite is an environmentally safe choice, making it suitable for many applications. These bearings are a solid option when rebuilding or repairing your engine, ensuring proper crankshaft support.