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

The +0.50mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 0.50mm. This is a common practice during engine rebuilds to remove wear or damage from the original journals.

What is the advantage of bimetal construction for engine bearings?

Bimetal bearings, like these from King Engine Bearings, combine the strength of an aluminum alloy with other materials. This construction offers good load-carrying capacity and wear resistance, making them suitable for the demanding environment inside an engine.

What is the typical application for this type of main bearing set?

This main bearing set is typically used during an engine rebuild for a Mitsubishi 4G63 engine. It's essential when the crankshaft has been re-ground to a +0.50mm undersize to restore proper bearing surface condition.

Specifications

Brand: King Engine Bearings
Part #: MB524AM1.5
UPC: 611500163432

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

Name: King Engine Bearings Mitsubishi 4G63 (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mitsubishi-4g63-size-0-50mm-main-beari-t14-770595
Price: 65.86 USD
Availability: BackOrder

$65.86

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King Engine Bearings Mitsubishi 4G63 (Size +0.50mm) Main Bearing Set. Bimetal construction for reliable engine performance.

Key Features

Fits a wide range of vehicles with the Mitsubishi 4G63 engine.
Main bearing set is sized +0.50mm for use with machined crankshaft journals.
Constructed with a bimetal aluminum base for durability and performance.
Designed to support the crankshaft and maintain proper oil clearance.

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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 engines that have been machined to a +0.50mm undersize. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. They are a popular choice for rebuilds where the original bearing surfaces have wear or damage, and the block has been machined to correct for it.

King Engine Bearings uses a bimetal construction, which combines the strength of aluminum with other materials to create a bearing surface that can handle the loads and temperatures found in an engine. This particular set is sized at +0.50mm, meaning it's intended for crankshaft journals that have been ground down by 0.50mm to remove imperfections and prepare for new bearings. Proper installation is key, as these bearings must be seated correctly to maintain oil clearance and prevent premature wear.

This main bearing set fits a wide range of vehicles, including many Mitsubishi Eclipse models, Dodge Challengers from the late 70s, and various Dodge and Plymouth Colt variants. If you're rebuilding a 4G63 engine and need a reliable main bearing set for a machined crankshaft, this King Engine Bearings set is a solid option.