Yukon Gear & Axle Performance Axle

2012–2017 Jeep Wrangler, 2018 Jeep Wrangler JK 3.6L V6

Part #: YA W38831

Overview

The Yukon Gear & Axle 4340 Chromoly Right Inner Axle is engineered specifically for Jeep Wrangler models from 2012 to 2018 equipped with the 3.6L V6 engine. Designed to meet the demands of off-road enthusiasts and performance drivers alike, this axle offers exceptional strength and durability to handle increased torque and harsh driving conditions. Whether you are upgrading your drivetrain for enhanced reliability or replacing a worn factory axle, this high-performance component ensures long-lasting service and peace of mind on and off the trail.

Built to exacting standards, this axle is an ideal choice for Jeep owners who require a robust and dependable drivetrain part that maintains OEM fitment while delivering superior performance under stress.

Key Features

Yukon Gear & Axle employs advanced manufacturing techniques and premium materials to produce axles that exceed typical aftermarket standards. Key features include:

• Constructed from high-tensile strength 4340 chromoly steel for maximum durability
• Cold roll formed splines for precise fit and enhanced strength
• Advanced induction coil heat treating process to improve wear resistance and toughness
• 27 spline design compatible with Dana 30 axle assemblies
• Right inner axle shaft measuring 34.5 inches in length for exact fitment
• Engineered to withstand the rigors of off-road use and high torque applications
• Direct replacement for factory axles with no modifications required
• Corrosion-resistant finish for extended service life in harsh environments

Construction & Design

This axle is crafted from premium 4340 chromoly steel, a material known for its superior tensile strength and toughness compared to standard steel alloys. The use of cold roll forming for the splines ensures a precise, tight fit that reduces wear and improves torque transfer efficiency. Additionally, the induction coil heat treating process hardens the axle surface, enhancing its resistance to fatigue and impact damage. These combined manufacturing processes result in an axle shaft that delivers exceptional reliability and performance, even under demanding off-road conditions.

Installation & Fitment

The Yukon Gear & Axle 4340 Chromoly Right Inner Axle is designed as a direct OEM replacement for the Dana 30 axle on 2012–2017 Jeep Wrangler and 2018 Jeep Wrangler JK models equipped with the 3.6L V6 engine. Installation requires no modifications, allowing for a straightforward swap using standard tools. This ensures a hassle-free upgrade or repair process, minimizing downtime and maintaining vehicle integrity.

What's Included

• One Yukon Gear & Axle 4340 Chromoly Right Inner Axle shaft (27 spline, 34.5 inches)
• Protective coating applied for corrosion resistance
• Installation instructions (where applicable)

Ideal For

This axle is perfect for Jeep Wrangler owners seeking a durable, high-quality replacement or upgrade axle that can handle increased power and off-road abuse. It is especially suited for enthusiasts who frequently tackle rugged terrain, rock crawling, or heavy towing, where factory axles may fall short. Additionally, it benefits anyone looking to enhance drivetrain reliability without compromising OEM fitment or vehicle performance.

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.