Eaton Detroit Locker Diff 29 Spline 1.21in (REAR): Fits Dodge / Jeep / Chrysler (97-11)

Eaton Detroit Locker Differential

1997–2011 Dodge / Jeep / Chrysler Models

187C179A

Overview:

The Eaton Detroit Locker Differential is a robust, 100% automatic locking differential designed to deliver maximum traction in a wide range of vehicle applications, from mild street driving to extreme off-road conditions. Engineered to keep both wheels engaged even when one is airborne, this differential ensures superior grip and control without any driver intervention. Its clutchless, maintenance-free design makes it an ideal upgrade for Dodge, Jeep, and Chrysler owners seeking enhanced drivetrain performance and reliability.

Perfectly suited for rear axle applications, the Detroit Locker is compatible with many popular models including the Dodge Dakota, Ram 1500 and 2500, Jeep Grand Cherokee, Wrangler, and various Chrysler vehicles from 1997 through 2011. Whether you’re tackling rugged trails or navigating slippery roads, this differential provides consistent power delivery and improved vehicle stability.

Key Features:

Built for durability and ease of use, the Eaton Detroit Locker Differential offers a range of advanced features that set it apart from conventional differentials:

• 100% automatic locking mechanism ensures both wheels receive power without driver input
• Clutchless design eliminates the need for maintenance and reduces wear
• Operates effectively in both forward and reverse gears for versatile traction control
• Compatible with 29 spline axle shafts and 1.21-inch axle shaft diameter for a precise fit
• Fits rear 8.375-inch axle housings with ring gear pinion ratios of 2.73 and up
• Engineered for bullet-proof strength to withstand harsh driving conditions
• Maintenance-free internal components for long-lasting performance
• Enhances vehicle control and stability on uneven or slippery surfaces

Construction & Design:

The Eaton Detroit Locker Differential is constructed from high-grade materials engineered to endure the rigors of demanding driving environments. Its rugged internal locking mechanism is designed to engage automatically, locking the axle shafts together to provide equal torque to both wheels. The clutchless design reduces friction and heat buildup, contributing to the differential’s longevity and reliability. Precision machining and quality control ensure a perfect fit and smooth operation within compatible rear axle assemblies.

This differential is specifically designed to fit vehicles equipped with 29 spline axle shafts and a 1.21-inch axle shaft diameter, making it a direct replacement for many Dodge, Jeep, and Chrysler rear axles. Its robust build quality supports both street and off-road use, delivering dependable traction when you need it most.

Installation & Fitment:

The Eaton Detroit Locker Differential is designed for straightforward installation in compatible rear axle housings. It fits a wide range of Dodge, Jeep, and Chrysler models from 1997 to 2011, including popular trucks, SUVs, and performance vehicles. Installation typically requires standard differential service procedures and may involve professional installation for optimal results. No modifications to the axle shafts or housing are generally necessary when replacing a factory-style differential with this Eaton unit.

Compatible vehicles include but are not limited to Dodge Dakota (1997–2004), Ram 1500 (1997–2004), Ram 2500 (1997–2001), Viper (1997–2009), Jeep Grand Cherokee (1997–2011), Jeep Wrangler (1997–2011), Dodge Durango (1998–2004), Dodge Neon SRT-4 (2003–2005), Chrysler 300 (2005–2009), Dodge Magnum (2005–2008), Dodge Charger (2006–2009), and Dodge Challenger (2008–2009).

What's Included:

• Eaton Detroit Locker Differential assembly
• Complete internal locking mechanism pre-installed
• Installation instructions and technical support documentation

Ideal For:

This differential is ideal for enthusiasts and professionals who demand enhanced traction and durability from their vehicle’s drivetrain. It is especially suited for off-road adventurers, performance drivers, and anyone who frequently encounters challenging driving conditions such as mud, snow, or uneven terrain. The Eaton Detroit Locker Differential provides peace of mind by ensuring power is delivered to both wheels automatically, improving vehicle control and reducing the risk of getting stuck.