What is the purpose of the +0.25mm sizing on these bearings?

The +0.25mm sizing indicates that these bearings are slightly larger than standard. This is typically used when the crankshaft journals have been machined down by 0.25mm during an engine rebuild to ensure a proper fit and oil clearance.

What is PMaxBlack technology?

PMaxBlack is a proprietary material technology developed by King Engine Bearings. It is designed to enhance the bearing's ability to withstand higher loads, making it suitable for performance applications where engines are subjected to increased stress.

Does this bearing set come with all the necessary components for installation?

This product is a set of main bearings. It is recommended to consult the manufacturer's installation guide or a professional mechanic to determine if any additional components, such as seals or gaskets, are required for your specific engine rebuild.

Specifications

Brand: King Engine Bearings
Part #: MB5227XP0.25
UPC: 611500532405

King Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM Performance Main Bearing Set - Size +0.25mm

Name: King Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM Performance Main Bearing Set - Size +0.25mm
Brand: King Engine Bearings
SKU: king-engine-bearings-king-mitsubishi-4g63-4g64-6-bolt-1st-gen-dsm-performance-ma-t14-260669
Price: 134.12 USD
Availability: BackOrder

$134.12

On Backorder — Expected to ship by Sep 16, 2026

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

King Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM Performance Main Bearing Set - Size +0.25mm. Features PMaxBlack for superior load capacity.

Key Features

Fits 1971-1974 Dodge Colt, 1990-1997 Eagle Talon, 1990-1994 Mitsubishi Eclipse, and more.
Main bearing set is sized +0.25mm for specific engine applications.
Features PMaxBlack technology for superior load capacity.
Includes Radialock for optimal crush height.
Constructed with a tri-metal copper-based material.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Built with a tri-metal copper-based material, this King main bearing set is specifically sized at +0.25mm for your Mitsubishi 4G63 or 4G64 6-bolt engine. King Engine Bearings has been a specialist in this field since 1960, focusing on creating high-quality engine bearings. This set includes their PMaxBlack technology, which offers superior load capacity, and Radialock features for optimal crush height, ensuring a solid fit within the engine block.

This bearing set is designed to fit a range of performance vehicles, including the Eagle Talon, Mitsubishi Eclipse, and Plymouth Laser. By specializing in engine bearings, King has developed a product line aimed at providing reliable performance for your engine's critical rotating assembly.