What does the +0.50mm sizing mean for these main bearings?

The +0.50mm sizing indicates that these bearings are larger than the standard size. They are intended for use when the engine's main crankshaft journals have been machined down by 0.50mm to account for wear or to achieve a specific build tolerance.

What is a bimetal aluminum base construction?

A bimetal construction typically involves a steel backing for strength and an aluminum-based overlay that provides the bearing surface. This combination helps manage heat and offers good wear characteristics for engine components.

Are these bearings sold individually or as a set?

This product is a main bearing set, meaning it includes all the necessary main bearings required for a complete installation on the specified Mitsubishi engines.

Specifications

Brand: King Engine Bearings
Part #: MB5403AM0.5
UPC: 611500458651

King Engine Bearings Mitsubishi 4G63/T/4G64 (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings Mitsubishi 4G63/T/4G64 (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mitsubishi-4g63-t-4g64-size-0-50mm-mai-t14-770685
Price: 52.88 USD
Availability: BackOrder

$52.88

On Backorder — Expected to ship by Jun 28, 2026

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

King Engine Bearings main bearing set for Mitsubishi 4G63/T and 4G64 engines. Size +0.50mm.

Key Features

Fits multiple Mitsubishi 4G63/T and 4G64 engines.
Main bearing set is sized +0.50mm for machined crankshaft journals.
Constructed with a bimetal aluminum base for reliable performance.
Compatible with vehicles such as the Dodge Stratus, Mitsubishi Eclipse, and Mitsubishi Lancer.

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About this part

Product Details

Built with a bimetal aluminum base, this main bearing set from King Engine Bearings is designed for Mitsubishi 4G63/T and 4G64 engines. These bearings are a +0.50mm size, meaning they are intended for engines that have been machined to a larger diameter to account for wear or to achieve a specific build specification. This set is suitable for a range of vehicles, including models like the Dodge Stratus, Mitsubishi Eclipse, and Mitsubishi Lancer.

King Engine Bearings uses a bimetal construction, which combines the strength of steel with the bearing properties of aluminum. This approach helps manage heat and provides a solid foundation for the bearing surface. When rebuilding or refreshing an engine, using the correct size bearings is critical for ensuring proper oil clearance and supporting the crankshaft effectively. This +0.50mm set is for applications where the main journals have been machined to that specific size.