King Engine Bearings Main Bearing Set

2005–Present Chrysler/Dodge Gen III HEMI 5.7, 6.1, 6.4 Engines

MB5840SI0.5

Overview:

The King Engine Bearings Crankshaft Main Bearing Set is engineered specifically for Chrysler and Dodge Gen III HEMI engines, including the 5.7L, 6.1L, and 6.4L variants. This set of five main bearings is designed to provide reliable, long-lasting support for the crankshaft, ensuring optimal engine performance and durability under demanding conditions. Ideal for enthusiasts and professional rebuilders alike, these bearings help maintain precise clearances and reduce friction, contributing to smoother engine operation and extended component life.

Whether you are performing a routine engine rebuild or upgrading your powerplant for enhanced performance, King Engine Bearings offers a trusted solution that meets or exceeds OEM specifications. The bimetal construction with an aluminum-silicon base provides excellent wear resistance and conformability, making this bearing set a dependable choice for high-performance Chrysler and Dodge HEMI engines.

Key Features:

King Engine Bearings main bearings combine advanced materials and precision manufacturing to deliver superior engine protection and performance. Key features include:

• Bimetal construction featuring an aluminum-silicon base for enhanced durability and wear resistance
• Precision-machined to maintain exact tolerances for optimal crankshaft fitment
• Designed specifically for Chrysler/Dodge Gen III HEMI 5.7L, 6.1L, and 6.4L engines
• Set of five main bearings to cover all main journals in the engine block
• Improved conformability to accommodate slight crankshaft imperfections and reduce risk of damage
• High fatigue strength to withstand the stresses of high-performance and daily driving applications
• Compatible with both stock and modified engines requiring reliable bearing performance

Construction & Design:

King Engine Bearings utilizes a bimetal design with an aluminum-silicon alloy base layer that provides excellent conformability and embedability. This construction helps the bearings adapt to minor crankshaft surface irregularities, reducing the risk of scoring and premature wear. The overlay material is engineered to resist fatigue and maintain structural integrity under high loads and temperatures common in HEMI V8 engines.

Each bearing is manufactured to exacting standards, ensuring consistent thickness and surface finish for proper oil clearance and lubrication. This precision engineering supports smooth crankshaft rotation and helps prevent metal-to-metal contact, which is critical for engine longevity and performance.

Installation & Fitment:

These main bearings are designed as direct replacements for Chrysler and Dodge Gen III HEMI engines with 5.7L, 6.1L, and 6.4L displacements. Installation requires standard engine rebuild procedures, including careful measurement of bearing clearances and proper lubrication during assembly. No modifications to the engine block or crankshaft are necessary when using this bearing set, making it a straightforward upgrade or replacement option for rebuilders and performance enthusiasts.

What's Included:

• Set of 5 main bearings engineered for Chrysler/Dodge Gen III HEMI 5.7L, 6.1L, and 6.4L engines

Ideal For:

This King Engine Bearings main bearing set is ideal for engine builders, mechanics, and performance enthusiasts who are rebuilding or upgrading Chrysler and Dodge Gen III HEMI engines. It is well suited for applications ranging from daily driving to high-performance street and mild racing use, providing reliable crankshaft support and enhanced engine durability.

King Engine Bearings specializes in engine bearings with a strong footprint in performance and racing, developing advanced bearing materials and designs for high-load engines. Builders and racers rely on King for main and rod bearings engineered to handle higher cylinder pressures and sustained RPM without sacrificing reliability.