What does the 0.25 size designation mean for these bearings?

The 0.25 size designation indicates that these main bearings are 0.25 undersize. This means they are designed to be used when the engine's crankshaft has been machined down by 0.010 inches during a rebuild.

What type of material are these bearings made from?

These bearings are constructed from a tri-metal material, which is known for its balance of strength and conformability. They also feature a high-performance overlay that is 0.0005 inches thick.

Are these bearings suitable for a performance build?

Yes, King Engine Bearings are a popular choice for engine builders seeking reliable components for both standard and performance applications. Their tri-metal construction and high-performance overlay are designed to handle increased demands.

King Engine Bearings Main Bearing Set MB621MC0.25 - Ford 415

Name: King Engine Bearings Ford 415 (Size 0.25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-415-size-0-25-main-bearing-set-t14-432578
Price: 130.39 USD
Availability: BackOrder

King Engine Bearings Ford 415 (Size 0.25) Main Bearing Set

$130.39

On Backorder

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

King Engine Bearings Ford 415 (Size 0.25) Main Bearing Set

Key Features

This set is 0.25 undersize, intended for a crankshaft machined by 0.010 inches.
Features King's high-performance overlay, 0.0005 inches thick.
Constructed with a tri-metal material for improved strength and conformability.
Designed for Ford 415 engines.
Helps reduce friction and wear in the engine's rotating assembly.

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Product Details

These King Engine Bearings are built with a high-performance overlay that's 0.0005 inches thick, offering a solid foundation for your Ford 415 engine rebuild. This specific set is sized 0.25, meaning it's designed to compensate for a crankshaft that has been machined down by 0.010 inches. King uses a specialized tri-metal material that balances strength and conformability, helping to reduce friction and wear in your engine's rotating assembly.

The MB621MC0.25 set is a popular choice for engine builders looking for reliable main bearings that can handle the demands of a rebuilt engine. King's manufacturing process focuses on creating a well-built bearing that fits right and performs consistently. This set is designed to work with the main journals of your Ford 415 engine, ensuring proper oil clearance and support for the crankshaft.

When rebuilding your Ford 415, using the correct bearing size is crucial for proper oil pressure and engine longevity. This 0.25 undersize set is intended for use when the crankshaft has been ground down by 0.010 inches. Always consult your engine's service manual for specific installation procedures and torque specifications.