Yukon Gear & Axle 4340 Chromoly Axle

2010–2023 Dodge Ram 2500 / 3500 5.7L Hemi, 6.4L 392, 6.7L Diesel

Part #: YA W43003

Overview

The Yukon Gear & Axle 4340 Chromoly Axle is a premium front left axle designed specifically for heavy-duty Dodge Ram 2500 and 3500 trucks from 2010 through 2023. Engineered to withstand the demanding conditions of towing, hauling, and off-road driving, this axle delivers exceptional strength and durability. It is ideal for truck owners seeking a reliable upgrade that enhances drivetrain performance and longevity under high torque loads.

Built to meet the rigorous requirements of Ram trucks equipped with 5.7L Hemi, 6.4L 392, and 6.7L diesel engines, this axle ensures a precise fit and dependable operation. Whether you’re restoring a worn axle or upgrading for enhanced toughness, Yukon’s 4340 Chromoly axle offers peace of mind and superior performance.

Key Features

This Yukon axle combines advanced materials and manufacturing techniques to provide a robust solution for demanding applications. Key features include:

• Constructed from high-tensile strength 4340 chromoly steel for maximum durability
• Cold roll formed splines for improved strength and precise fitment
• Advanced induction coil heat treating process enhances wear resistance and toughness
• Designed specifically for front left axle position on Dodge Ram 2500 and 3500 models
• Compatible with multiple engine options: 5.7L Hemi, 6.4L 392, and 6.7L diesel variants
• Manufactured to OEM specifications ensuring seamless integration and reliable performance
• Ideal for heavy-duty use including towing, hauling, and off-road conditions

Construction & Design

The Yukon 4340 Chromoly Axle is crafted from premium 4340 chromoly steel, known for its exceptional strength-to-weight ratio and toughness. This alloy steel undergoes a cold roll forming process to create splines that are both precise and highly resistant to wear. The axle is then subjected to an advanced induction coil heat treating method, which hardens the surface while maintaining a tough core, resulting in superior fatigue resistance and longevity.

Every axle is engineered to meet or exceed OEM standards, ensuring it can handle the high torque output of modern Ram engines without compromise. The combination of material quality and manufacturing precision makes this axle a dependable choice for demanding truck applications.

Installation & Fitment

This axle is designed as a direct fit replacement for the front left position on Dodge Ram 2500 and 3500 trucks from 2010 to 2023 with 5.7L Hemi, 6.4L 392, and 6.7L diesel engines. Installation requires standard axle replacement procedures and should be performed by a qualified technician to ensure proper alignment and torque specifications. No modifications are typically necessary, making it a straightforward upgrade for restoring or enhancing your vehicle’s drivetrain.

What's Included

• One Yukon 4340 Chromoly Front Left Axle (19.6 inches)
• Installation instructions (where applicable)

Ideal For

This axle is perfect for Dodge Ram owners who demand durability and reliability from their drivetrain components. It is especially suited for:

• Heavy-duty towing and hauling applications
• Off-road enthusiasts requiring rugged axle strength
• Truck restorers replacing worn or damaged axles
• Performance upgrades to handle increased torque and power

Yukon Gear & Axle supplies hardcore drivetrain components—ring & pinion gears, axles, lockers, and differential upgrades—built for off-road and high-load performance. Trusted by enthusiasts and installers, Yukon focuses on fit, strength, and proven options for re-gearing and reinforcing trucks and 4x4s running bigger tires and tougher terrain.