ACL Race Series Main Bearing Set

2003–2025 Dodge, Chrysler, Jeep & Ram 5.7L / 6.1L HEMI V8 Engines

Part #: 5M2220H-STD

Overview

The ACL Race Series Main Bearing Set is engineered for high-performance Chrysler 5.7L and 6.1L HEMI V8 engines, providing exceptional durability and reliability under demanding conditions. Designed to support engines found in a wide range of Dodge, Chrysler, Jeep, and Ram vehicles from 2003 through 2025, this bearing set is ideal for engine rebuilds, performance upgrades, and motorsport applications.

Whether you are a professional engine builder, racer, or enthusiast, these bearings deliver the critical foundation for smooth crankshaft rotation and optimal engine operation. The ACL Race Series bearings are trusted in high-stress environments, ensuring your engine’s bottom end remains robust and dependable.

Key Features

ACL Race Series main bearings utilize advanced materials and precision manufacturing to deliver outstanding performance and longevity. Key features include:

• Standard size main bearings specifically engineered for Chrysler 5.7L and 6.1L HEMI V8 engines
• High-quality tri-metal construction for superior wear resistance and load capacity
• Optimized oil groove and surface finish to maintain consistent oil film and reduce friction
• Precision manufacturing tolerances for exact fit and reliable crankshaft support
• Enhanced fatigue strength to withstand high RPM and increased power output
• Compatible with factory and aftermarket crankshafts without modification
• Designed to reduce heat buildup and improve bearing life under racing or street conditions
• Corrosion-resistant coating to protect against engine contaminants and oil breakdown

Construction & Design

The ACL Race Series bearings feature a tri-metal layering process combining a robust steel backing with a copper-lead alloy and a thin overlay of a soft, anti-friction material. This construction balances strength, conformability, and embedability, allowing the bearings to adapt to minor crankshaft imperfections while resisting wear and fatigue.

Each bearing surface is precision-machined and finished to exacting standards to ensure optimal oil clearance and film retention. This meticulous design minimizes metal-to-metal contact, reducing friction and heat generation during engine operation, which contributes to extended bearing life and reliable performance in high-stress environments.

Installation & Fitment

Installation of the ACL Race Series main bearing set is straightforward for experienced mechanics and engine builders. These bearings are direct replacements for factory main bearings in Chrysler 5.7L and 6.1L HEMI V8 engines and fit a broad range of vehicles including:

• 2005–2008 Dodge Magnum 5.7L HEMI
• 2005–2010 Chrysler 300C 6.1L SRT8
• 2005–2021 Jeep Grand Cherokee 5.7L HEMI and 6.1L SRT8
• 2006–2010 Dodge Charger 6.1L SRT8
• 2006–2025 Dodge Charger 5.7L HEMI
• 2008–2025 Dodge Challenger 5.7L HEMI and 6.1L SRT8
• 2021–2025 Dodge Durango 5.7L HEMI
• 2021–2025 Ram 1500 5.7L HEMI

No modifications to the crankshaft or engine block are typically required when using this standard size bearing set. Proper cleaning, measuring, and lubrication during installation are essential to ensure optimal performance and longevity.

What's Included

• Complete set of standard size main bearing shells for all main journal positions
• Installation instructions and specifications

Ideal For

This ACL Race Series main bearing set is perfect for:

• Engine rebuilders seeking high-quality, durable main bearings for Chrysler HEMI V8 engines
• Performance enthusiasts upgrading their engine bottom end for racing or street performance
• Motorsport applications requiring bearings that withstand high RPM and increased loads
• Anyone needing a reliable, direct-fit bearing set for Dodge, Chrysler, Jeep, and Ram vehicles equipped with 5.7L or 6.1L HEMI V8 engines

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.