King Engine Bearings Main Bearing Set

2011–2023 Chrysler 300 / Dodge Challenger / Dodge Charger / Dodge Durango / Jeep Grand Cherokee / Jeep Wrangler / Ram 1500 3.6L V6

Part #: MB4518SI0.25

Overview

The King Engine Bearings Main Bearing Set +0.25mm is engineered to provide superior durability and precision fitment for a range of popular 3.6L V6 engines found in Chrysler, Dodge, Jeep, and Ram vehicles from 2011 through 2023. Designed for professional mechanics and automotive enthusiasts alike, this bearing set ensures reliable engine performance by maintaining optimal clearance and reducing friction between the crankshaft and engine block.

King Engine Bearings has specialized exclusively in engine bearings since 1960, delivering products that meet or exceed OEM specifications. This main bearing set is ideal for engine rebuilds, repairs, or performance upgrades where precise bearing sizing is critical to engine longevity and smooth operation.

Key Features

King Engine Bearings combines decades of expertise with advanced manufacturing techniques to produce main bearings that deliver consistent quality and performance. Key features include:

• +0.25mm oversize main bearings for precise fitment during engine rebuilds
• Engineered specifically for 3.6L V6 engines in Chrysler 300, Dodge Challenger, Dodge Charger, Dodge Durango, Jeep Grand Cherokee, Jeep Wrangler, and Ram 1500 models
• High-quality materials and surface treatments to reduce wear and extend engine life
• Strict manufacturing tolerances to ensure optimal bearing clearance and minimize friction
• Corrosion-resistant coatings for enhanced durability under demanding operating conditions
• Compatibility with both stock and mildly modified engines
• Comprehensive quality control and testing to meet industry standards

Construction & Design

King Engine Bearings utilizes premium bearing alloys and advanced metallurgical processes to produce main bearings that withstand high loads and thermal stresses. The +0.25mm size indicates these bearings are slightly oversized to accommodate crankshaft journals that have been machined during engine rebuilding. This precise sizing helps maintain proper oil clearance, which is essential for effective lubrication and preventing premature wear.

The bearing shells feature a multi-layer design with a durable backing and a soft, conformable overlay to ensure excellent compatibility with the crankshaft surface. This construction reduces the risk of metal-to-metal contact and enhances the bearing’s ability to absorb contaminants and debris.

Installation & Fitment

This main bearing set is designed for direct fitment in 3.6L V6 engines across multiple vehicle models and years, including Chrysler 300 (2011–2023), Dodge Challenger (2011–2023), Dodge Charger (2011–2023), Dodge Durango (2011–2015), Jeep Grand Cherokee (2011–2015), Jeep Wrangler JK and other Wrangler models (2012–2018), and Ram 1500 Classic and standard Ram 1500 (2013–2024).

Installation requires standard engine rebuilding procedures, including proper crankshaft journal machining and cleaning. The +0.25mm size must match the crankshaft journal diameter to ensure correct bearing clearance. Professional installation is recommended to guarantee optimal engine performance and longevity.

What's Included

• Main bearing shells sized +0.25mm for 3.6L V6 engines
• Complete set to replace all main bearings in the engine block
• Packaging with part number and fitment details for easy identification

Ideal For

This King Engine Bearings Main Bearing Set is ideal for automotive professionals, engine rebuilders, and enthusiasts performing engine overhauls or repairs on 3.6L V6 Chrysler, Dodge, Jeep, and Ram vehicles. It is especially suited for applications requiring precise bearing sizing after crankshaft machining or when upgrading engine components to maintain reliable performance and 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.