What does the '0.25' in the part number mean for these bearings?

The '0.25' indicates that these main bearings are 0.25mm undersize. This means they are intended for use on a crankshaft that has been machined down by 0.25mm to account for wear or to achieve specific clearances.

What type of engines are these main bearings designed for?

These main bearings are specifically designed for Hyundai G4HC and G series engines with a 1.0L or 1.1L displacement, featuring a SOHC 12-valve configuration.

What is the construction of these King Engine Bearings?

These bearings feature a high-performance overlay material bonded to a steel backing. This construction is intended to provide durability and handle the demanding conditions within an engine's bottom end.

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Specifications

Brand: King Engine Bearings
Part #: MB5641SI0.25
UPC: 611500472282

King Engine Bearings Hyundai G4HC/G 1.0/1.1L SOHC 12V (Size 0.25) Main Bearing Set

Name: King Engine Bearings Hyundai G4HC/G 1.0/1.1L SOHC 12V (Size 0.25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-hyundai-g4hc-g-1-0-1-1l-sohc-12v-size--t14-432484
Price: 24.69 USD
Availability: BackOrder

$24.69

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King Engine Bearings main bearing set MB5641SI0.25. This 0.25mm undersize set is for Hyundai G4HC/G 1.0/1.1L SOHC 12V engines.

Key Features

Main bearing set is 0.25mm undersize.
Designed for Hyundai G4HC/G 1.0/1.1L SOHC 12V engines.
Features a high-performance overlay material for durability.
Steel backing provides a strong foundation for the bearing surface.

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About this part

Product Details

These main bearings are 0.25mm undersize, meaning they are designed to be used when the crankshaft journals have been machined down by that amount during an engine rebuild. They are specifically made for Hyundai G4HC and G 1.0/1.1L SOHC 12V engines.

King Engine Bearings uses a high-performance overlay material that's built to handle the pressures and heat found in an engine's bottom end. This overlay is bonded to a steel backing for strength and durability. When you're rebuilding an engine, getting the bearing clearances right is critical for oil pressure and longevity, and these bearings offer a well-built option to achieve that.

When installing these bearings, it's important to follow the manufacturer's torque specifications and ensure the crankshaft journals are clean and properly prepped. Proper installation is key to getting the most out of these bearings and ensuring your engine runs smoothly.