Yukon Gear & Axle Spider Gear Kit

2007–2011 Jeep Wrangler 3.8L V6, 2012–2018 Jeep Wrangler 3.6L V6, 2018 Jeep Wrangler 2.0L Turbo

Part #: YPKD30-S-27-JK

Overview

The Yukon Gear 27 Spline Open Spider Gear Kit is a premium replacement set designed specifically for the front differentials of select Jeep Wrangler JK models from 2007 through 2018. Engineered to outperform OEM components, this spider gear kit provides enhanced durability and reliability for off-road enthusiasts and daily drivers alike. Whether you are repairing a worn differential or upgrading for improved longevity, this kit delivers all the necessary components for a complete and proper spider gear set replacement.

Built to handle the demands of Jeep’s 3.8L V6, 3.6L V6, and 2.0L Turbo engines, the Yukon Gear spider gear kit ensures smooth differential operation and optimal power transfer. It is an ideal solution for Jeep owners seeking a high-quality, direct-fit replacement that maintains factory performance while offering increased strength and wear resistance.

Key Features

This spider gear kit incorporates advanced manufacturing techniques and premium materials to provide superior performance and durability. Key features include:

• 27 spline design for precise fitment and compatibility with Jeep Wrangler JK front differentials
• Open spider gear configuration optimized for smooth differential action
• Manufactured from high-grade alloy steel for enhanced strength and wear resistance
• Heat-treated components to improve toughness and extend service life
• Complete kit includes all necessary gears and hardware for a full replacement
• Direct OEM replacement ensuring seamless installation without modifications
• Improved manufacturing tolerances for consistent performance under load
• Designed to withstand off-road stresses and heavy-duty use

Construction & Design

Yukon Gear & Axle spider gears are crafted from premium alloy steel, selected for its excellent balance of strength, toughness, and fatigue resistance. Each gear undergoes precision machining and heat treatment processes to enhance hardness and durability, ensuring reliable operation in demanding conditions. The 27 spline count matches factory specifications, providing a secure and accurate fit within the differential assembly.

The open spider gear design facilitates smooth torque distribution between the axle shafts, reducing wear and improving drivetrain efficiency. Yukon’s stringent quality control and advanced manufacturing techniques result in components that exceed OEM standards, offering Jeep owners a dependable upgrade or replacement option.

Installation & Fitment

This spider gear kit is engineered as a direct fit replacement for the front differentials of Jeep Wrangler JK models equipped with 3.8L V6 engines from 2007 to 2011, 3.6L V6 engines from 2012 to 2018, and the 2.0L Turbo engine in 2018 models. Installation requires standard differential disassembly and reassembly procedures, with no modifications necessary. It is recommended that installation be performed by a qualified technician or experienced mechanic to ensure proper setup and torque specifications are met.

What's Included

• 27 spline open spider gears
• Cross shaft
• Side gears
• All necessary retaining clips and hardware

Ideal For

This Yukon Gear spider gear kit is ideal for Jeep Wrangler JK owners seeking a durable, high-quality replacement for worn or damaged front differential spider gears. It is well suited for off-road enthusiasts who demand reliable drivetrain components capable of handling rugged terrain, as well as daily drivers who want to maintain factory-level performance and longevity. This kit is also a smart choice for mechanics and shops performing differential rebuilds or upgrades on compatible Jeep models.

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.