King Engine Bearings Main Bearing Set

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

MB5840SI1.0

Overview:

The King Engine Bearings Main Bearing Set is engineered specifically for Chrysler and Dodge Gen III HEMI engines, including the 5.7L, 6.1L, and 6.4L variants. Designed to meet the demanding requirements of high-performance and daily-driven vehicles, this bearing set ensures reliable crankshaft support and optimal engine longevity. Ideal for enthusiasts and professional rebuilders alike, these main bearings provide a critical foundation for smooth engine operation and durability under varying load conditions.

King Engine Bearings is renowned for precision manufacturing and quality materials, making this main bearing set a trusted choice for maintaining or upgrading your HEMI engine’s bottom end. Whether you’re performing a routine rebuild or enhancing your engine’s performance, these bearings deliver consistent performance and protection.

Key Features:

King Engine Bearings incorporates advanced technology and rigorous quality control to produce main bearings that stand up to the stresses of modern HEMI engines. Key features include:

• Bimetal construction with an aluminum-silicon base for excellent wear resistance and durability
• Precision-machined surfaces to ensure tight tolerances and optimal oil clearance
• Compatibility with Chrysler/Dodge Gen III HEMI 5.7L, 6.1L, and 6.4L engines
• Enhanced fatigue strength to withstand high RPM and heavy load conditions
• Corrosion-resistant coating to protect against engine contaminants and oil breakdown
• Designed to maintain proper oil film thickness for superior lubrication
• Manufactured to meet or exceed OEM specifications for fit and performance

Construction & Design:

This main bearing set features a bimetal design, combining an aluminum-silicon alloy overlay on a steel backing. This construction offers a balance of strength, conformability, and fatigue resistance, essential for the demanding environment inside Gen III HEMI engines. The aluminum-silicon base provides excellent embedability and compatibility with modern engine oils, reducing the risk of premature wear.

King Engine Bearings utilizes advanced manufacturing processes including precision grinding and surface finishing to ensure each bearing shell meets strict dimensional and surface quality standards. This attention to detail helps maintain consistent oil clearance and reduces the likelihood of bearing failure due to uneven wear or improper fitment.

Installation & Fitment:

The King Engine Bearings Main Bearing Set is designed for direct replacement in Chrysler and Dodge Gen III HEMI engines with 5.7L, 6.1L, and 6.4L displacements. Installation requires standard engine rebuild procedures, including proper cleaning of bearing surfaces, checking crankshaft journals for wear, and verifying oil clearances with plastigage or micrometers.

No modifications are necessary when installing this bearing set, making it suitable for both professional engine builders and experienced enthusiasts performing rebuilds or upgrades. Always follow manufacturer torque specifications and assembly guidelines to ensure optimal performance and longevity.

What's Included:

• Main bearing shells for all main journals of Gen III HEMI 5.7L, 6.1L, and 6.4L engines
• Upper and lower bearing halves designed for precise fitment
• Packaging and documentation from King Engine Bearings

Ideal For:

This main bearing set is ideal for:

• Engine rebuilders restoring Chrysler/Dodge Gen III HEMI engines
• Performance enthusiasts upgrading bottom-end components for reliability
• Daily drivers requiring durable and OEM-quality bearing replacements
• Motorsport applications where consistent bearing performance is critical

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.