King Engine Bearings Main Bearing Set

2005–2010 Chrysler 300 / 2005–2008 Dodge Magnum / 2006–2010 Dodge Charger 2.7L Engine

MB4074SI0.25

Overview:

The King Engine Bearings +0.25mm Main Bearing Set is engineered to provide reliable, high-quality performance for Chrysler 300, Dodge Charger, and Dodge Magnum vehicles equipped with the 2.7L engine. Founded in 1960, King Engine Bearings has specialized exclusively in engine bearings, delivering precision components designed to meet or exceed OEM standards. This main bearing set is ideal for medium-load engines, offering enhanced durability and protection during engine rebuilds or upgrades.

Whether you are a professional mechanic or an automotive enthusiast performing an engine overhaul, these bearings ensure optimal crankshaft support and smooth operation. The +0.25mm sizing accommodates machining tolerances and wear, making it a perfect choice for restoring engine performance and longevity.

Key Features:

King Engine Bearings combines advanced materials and manufacturing techniques to deliver superior engine protection. Key features include:

• Bimetal construction with an aluminum-silicon base for excellent wear resistance and durability
• Lead-free and environmentally safe composite materials, supporting eco-friendly engine rebuilding
• Includes thrust washers to control axial crankshaft movement and maintain proper bearing clearance
• Precision +0.25mm sizing to accommodate engine block machining and ensure a perfect fit
• Designed specifically for medium-load engines, balancing strength and flexibility
• Extensive fitment coverage for Chrysler and Dodge models with the 2.7L V6 engine
• Manufactured under strict quality control standards for consistent performance

Construction & Design:

This main bearing set features a bi-metal design, combining an aluminum-silicon alloy base with a durable overlay to provide excellent fatigue resistance and conformability. The aluminum base offers lightweight strength, while the silicon enhances wear resistance under high-load conditions. The lead-free composite overlay ensures environmental safety without compromising bearing performance.

Each bearing shell is engineered to maintain precise clearances and withstand the stresses of daily driving and performance applications. The included thrust washers are designed to absorb axial loads, preventing crankshaft end play and ensuring smooth engine operation.

Installation & Fitment:

Installation of the King Engine Bearings +0.25mm Main Bearing Set requires standard engine rebuild procedures, including proper cleaning, measuring, and machining of the engine block and crankshaft journals. The +0.25mm sizing is intended for use when the crankshaft has been machined undersize by 0.25mm to restore proper bearing clearance.

This bearing set fits a wide range of Chrysler and Dodge vehicles equipped with the 2.7L V6 engine, including the Chrysler 300 (2005–2010), Dodge Charger (2006–2010), and Dodge Magnum (2005–2008). Always verify compatibility with your specific engine model and year before installation.

What's Included:

• Main bearing shells sized +0.25mm for all main journals
• Thrust washers for crankshaft axial control
• Installation instructions and specifications

Ideal For:

This main bearing set is ideal for engine rebuilders, mechanics, and automotive enthusiasts seeking reliable, OEM-quality replacement bearings for Chrysler and Dodge 2.7L engines. It is especially suited for engines that have undergone crankshaft machining or require precise bearing clearance adjustments to restore optimal performance and longevity.

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.