What does the '0.75' size designation mean for these bearings?

The '0.75' in the part number indicates that these bearings are 0.005 inches oversize. This means they are intended for use when the engine's crankshaft journals have been machined down by 0.005 inches during an engine rebuild.

What type of material are these main bearings made from?

These main bearings are constructed with a high-performance tri-metal material, featuring a unique overlay structure. This design is chosen for its improved strength and durability under engine operating conditions.

Are these bearings suitable for a stock engine rebuild?

These bearings are 0.005 inches oversize. They are typically used in engine rebuilds where the crankshaft has been machined to this specific size. Always confirm your engine's specifications or machining requirements before ordering.

Specifications

Brand: King Engine Bearings
Part #: MB5799SI0.75
UPC: 611500620256

King Engine Bearings Subaru FA20/ Toyota 4U-GSE/ O/S Housing .005in (Size 0.75) Main Bearing Set

Name: King Engine Bearings Subaru FA20/ Toyota 4U-GSE/ O/S Housing .005in (Size 0.75) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-subaru-fa20-toyota-4u-gse-o-s-housing--t14-432517
Price: 57.28 USD
Availability: BackOrder

$57.28

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King Engine Bearings main bearing set for Subaru FA20/Toyota 4U-GSE engines. Size 0.75 (0.005in).

Key Features

This is a main bearing set from King Engine Bearings.
Designed for Subaru FA20 and Toyota 4U-GSE engines.
Features a unique overlay structure for improved strength and durability.
This set is sized 0.75, which is 0.005 inches oversize.
Built with a high-performance tri-metal material.

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About this part

Product Details

Built with a unique overlay structure, these King Engine Bearings main bearings are designed for Subaru FA20 and Toyota 4U-GSE engines. The overlay is a high-performance tri-metal material that offers improved strength and durability, especially under demanding conditions. This specific set is sized at 0.75, which translates to 0.005 inches oversize, making it suitable for applications where the crankshaft journals have been machined to accommodate this size.

King Engine Bearings uses a specialized manufacturing process to ensure these bearings have a consistent wall thickness and a smooth surface finish. This attention to detail helps reduce friction and wear within the engine's rotating assembly, contributing to better oil flow and overall engine health. When rebuilding or repairing your engine, using bearings that are precisely sized and well-constructed is crucial for long-term reliability.