Crown Auto Rear Differential Case Kit

2007–2018 Jeep Wrangler JK 3.6L/3.8L V6

Part #: 68035574AA

Overview

The Crown Auto Rear Differential Case Kit is a direct replacement solution designed specifically for the Dana 44 rear differential found in Jeep Wrangler JK models from 2007 through 2018. This kit features a 30-spline open differential case compatible with all gear ratios, making it an ideal upgrade or repair part for Jeep enthusiasts seeking reliable performance and durability. Engineered to meet or exceed OEM specifications, it ensures a seamless fit and dependable operation for both 3.6L and 3.8L V6 engine configurations.

Whether you are restoring your Jeep’s drivetrain or upgrading components for enhanced off-road capability, this kit provides a robust foundation for maintaining optimal rear axle performance. Backed by a 12-month warranty, it offers peace of mind and long-term value for daily drivers and off-road adventurers alike.

Key Features

This rear differential case kit combines precision engineering with durable materials to deliver reliable performance. Key features include:

• Direct replacement for Dana 44 rear differential cases with 30 splines
• Compatible with all gear ratios for versatile application
• Includes 1/2" ring gear bolts for secure assembly
• Designed specifically for Jeep Wrangler JK models (2007–2018) with 3.6L and 3.8L V6 engines
• Manufactured to meet or exceed OEM quality standards
• Open differential design suitable for a variety of driving conditions
• Durable construction to withstand off-road and on-road stresses
• 12-month warranty for added confidence and reliability

Construction & Design

The Crown Auto Rear Differential Case Kit is crafted from high-strength materials engineered to endure the rigors of off-road driving and daily use. The case is precision-machined to ensure proper alignment and fitment with existing axle components, minimizing installation time and potential issues. The included 1/2" ring gear bolts are made from hardened steel, providing secure fastening and resistance to loosening under heavy torque loads.

Its open differential design allows for smooth power distribution between rear wheels, maintaining traction and control in varied terrain. The robust construction ensures long-lasting durability, making it a dependable choice for Jeep owners looking to maintain or restore their vehicle’s drivetrain integrity.

Installation & Fitment

This kit is designed as a direct bolt-in replacement for the rear Dana 44 differential case on Jeep Wrangler JK models from 2007 to 2018 equipped with 3.6L or 3.8L V6 engines. Installation requires standard mechanical tools and knowledge of differential assembly. No modifications to the axle housing or surrounding components are necessary, ensuring a straightforward replacement process.

For best results, professional installation is recommended to ensure proper torque specifications and differential setup. This helps maintain optimal performance and longevity of the drivetrain components.

What's Included

• Rear Dana 44 open differential case with 30 splines
• Set of 1/2" ring gear bolts
• Installation instructions (where applicable)

Ideal For

This rear differential case kit is ideal for Jeep Wrangler JK owners who need a reliable replacement for a worn or damaged Dana 44 rear differential case. It is also suitable for off-road enthusiasts seeking a durable, OEM-quality component to maintain drivetrain integrity during demanding trail use. Perfect for both restoration projects and routine maintenance, this kit ensures your Jeep’s rear axle performs as intended.

With over 10,000 different part numbers in stock for Jeep® vehicles from 1942 on up, Crown has the largest stock of replacement parts for Jeep® vehicles, including factory-discontinued parts. In fact, many of the older Jeeps are still on (and off) the road thanks to Crown parts. The Crown line consists of axle, body, brake, clutch, cooling, driveline, electrical, engine, exhaust, fuel, steering, suspension, transmission and transfer case components. Crown Automotive also offers an exclusive line of component kits and accessory products.