What does the +0.25mm sizing mean for these bearings?

The +0.25mm designation indicates that these bearings are slightly larger than standard size. They are intended for use when the crankshaft journals have been machined down by 0.25mm (or 0.010 inches) due to wear or damage. This allows the engine to be rebuilt to its proper specifications.

What is the construction of these main bearings?

These bearings are made with a bimetal construction, featuring an aluminum base. This design helps in managing heat effectively and provides a durable surface for the crankshaft to rotate against.

Do these bearings come with any installation hardware?

This listing is for the main bearing set only. Installation hardware, such as main cap bolts or seals, are typically sold separately. Always refer to the manufacturer's instructions for a complete list of required components for your engine rebuild.

Specifications

Brand: King Engine Bearings
Part #: MB5195AM0.25
UPC: 611500167317

King Engine Bearings Mitsubishi G25B/4G54/4G53 (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Mitsubishi G25B/4G54/4G53 (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mitsubishi-g25b-4g54-4g53-size-0-25mm--t14-770525
Price: 80.50 USD
Availability: BackOrder

$80.50

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King Engine Bearings main bearing set for Mitsubishi G25B, 4G54, 4G53 engines. Size +0.25mm.

Key Features

Fits a wide range of vehicles including Chrysler, Dodge, and Mitsubishi models.
Main bearing set for Mitsubishi G25B, 4G54, and 4G53 engines.
Bearing size is +0.25mm, intended for machined crankshafts.
Constructed with a bimetal (aluminum base) material for reliable performance.
Supports the crankshaft in the engine block for smooth rotation.

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About this part

Product Details

If you're rebuilding the bottom end of your Mitsubishi G25B, 4G54, or 4G53 engine, a fresh set of main bearings is essential. These bearings sit between the crankshaft and the engine block, supporting the rotating assembly and ensuring smooth operation. This set from King Engine Bearings is specifically sized at +0.25mm, meaning it's intended for crankshafts that have been machined to this undersize to correct wear or runout.

King uses a bimetal construction with an aluminum base for these bearings. This material choice helps manage heat and provides a solid foundation for the bearing surface. They fit a wide range of vehicles, including popular models like the Dodge Ram 50, Mitsubishi Mighty Max, and Chrysler LeBaron, among many others. Installing these bearings correctly is key to a long-lasting engine rebuild, so be sure to follow manufacturer torque specifications and use a quality assembly lube.