What does '0.25 undersize' mean for these main bearings?

This means the bearings are designed for a crankshaft where the main journals have been machined down by 0.025 inches. This is common during engine rebuilds when the crankshaft has wear or needs to be refinished.

Are these bearings sold individually or as a set?

This is a main bearing set, which includes all the necessary bearings to replace the main bearings for your engine's crankshaft.

What is the typical application for this type of bearing?

These bearings are typically used during an engine rebuild where the crankshaft has been machined to an undersize specification. They ensure proper oil clearance and support for the crankshaft.

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Specifications

Brand: King Engine Bearings
Part #: MB5734MC0.25
UPC: 611500618536

King Engine Bearings Ford 302 CID Coyote (Size 0.25) Main Bearing Set

Name: King Engine Bearings Ford 302 CID Coyote (Size 0.25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-302-cid-coyote-size-0-25-main-bea-t14-432500
Price: 103.46 USD
Availability: BackOrder

$103.46

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King Engine Bearings Ford 302 CID Coyote Main Bearing Set (Size 0.25). Essential for engine rebuilds needing precise crankshaft alignment.

Key Features

Main bearing set for Ford 302 CID Coyote engines.
Size is 0.25 undersize, for use with a machined crankshaft.
Multi-layer bearing material for heat and wear management.
Helps maintain proper oil clearance and pressure.

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About this part

Product Details

If you're rebuilding the bottom end of your Ford 302 CID Coyote engine and need to get the crankshaft spinning true, a fresh set of main bearings is critical. These main bearings from King Engine Bearings are specifically sized at 0.25 undersize, meaning they're designed to work with a crankshaft that has been machined down by 0.025 inches. This ensures a proper fit and oil clearance, which is vital for the longevity and performance of your engine.

King Engine Bearings is a well-known name in engine components, and this set is built to handle the demands of a performance or rebuilt engine. They use a multi-layer bearing material that helps manage heat and wear, ensuring consistent oil pressure and smooth operation. Getting the right size bearing is key during an engine rebuild, and this 0.25 undersize set is for those applications where the main journals have been turned down to match.