ACL High Performance Main Bearing Set

2003–2025 Dodge Ram 1500 / Chrysler 300 / Dodge Magnum / Jeep Grand Cherokee / Dodge Charger / Dodge Challenger / Dodge Durango 5.7L & 6.1L HEMI V8

5M2220HX-STD

Overview:

The ACL High Performance Main Bearing Set is engineered specifically for Chrysler and Dodge vehicles equipped with the 5.7L and 6.1L HEMI V8 engines, covering model years from 2003 through 2025. Designed to meet the rigorous demands of high-performance and heavy-duty applications, this bearing set provides enhanced durability and reliability for engines subjected to increased stress and power output.

Ideal for enthusiasts, professional rebuilders, and performance tuners, these main bearings ensure optimal crankshaft support and oil clearance, contributing to smoother engine operation and extended component life. Whether you are restoring a classic or upgrading a modern muscle car, ACL bearings deliver trusted performance and peace of mind.

Key Features:

ACL’s main bearing set incorporates advanced engineering and precision manufacturing to support high-performance engine builds. Key features include:

• Standard size bearings with an extra .025mm (0.001") oil clearance for improved lubrication and reduced friction
• Designed specifically for Chrysler 5.7L HEMI V8 (2003–2008) and ESF 6.1L HEMI V8 (2005–2010) engines
• High-quality materials and coatings to resist wear, fatigue, and corrosion under extreme conditions
• Precision machining for exact fitment and optimal crankshaft alignment
• Compatible with a wide range of Dodge and Chrysler models, including Ram 1500, Charger, Challenger, Durango, Magnum, and Jeep Grand Cherokee
• Enhanced oil clearance supports improved oil film strength and heat dissipation
• Manufactured to meet or exceed OEM specifications for durability and performance

Construction & Design:

ACL main bearings are crafted from premium-grade bearing alloys that provide excellent load-carrying capacity and resistance to deformation. The bearing shells feature a specialized overlay designed to reduce friction and prevent scoring under high RPM and load conditions. The extra oil clearance of .025mm (0.001") is engineered to optimize oil flow around the crankshaft journals, enhancing lubrication and reducing the risk of bearing failure during high-performance operation.

Each bearing is precision machined to ensure consistent thickness and roundness, guaranteeing a perfect fit within the engine block. This meticulous construction supports smooth crankshaft rotation and contributes to overall engine longevity.

Installation & Fitment:

The ACL High Performance Main Bearing Set is a direct replacement for the specified Chrysler and Dodge HEMI V8 engines and fits a broad range of models from 2003 through 2025. Installation requires standard engine rebuild procedures, including proper cleaning of bearing surfaces and careful measurement of crankshaft journal dimensions to confirm correct oil clearance.

These bearings are designed to work with factory components and do not require modifications, making them suitable for both professional engine builders and experienced DIY enthusiasts. Proper installation ensures optimal bearing performance and engine reliability.

What's Included:

• Complete set of main bearings sized standard with extra .025mm oil clearance
• Installation instructions and specifications for oil clearance

Ideal For:

This main bearing set is ideal for:

• Engine rebuilders upgrading Chrysler and Dodge HEMI V8 engines for performance or longevity
• Muscle car enthusiasts restoring or enhancing Dodge Charger, Challenger, Magnum, and Chrysler 300 models
• Truck owners maintaining or upgrading Dodge Ram 1500 engines for durability and reliability
• Jeep Grand Cherokee owners seeking high-quality bearing replacements for 5.7L HEMI engines
• Performance tuners requiring reliable engine components capable of handling increased power and stress

ACL Race Series is known for performance engine bearings used across motorsports, with rod and main bearing options engineered for durability under high load and heat. Their positioning centers on racing-focused design, metallurgy, and engineering intended to stand up to demanding competition engines.