What is a lunchbox locker and how does it install?

A lunchbox locker, like the Spartan Locker, is designed to fit inside your vehicle's existing differential carrier. This typically makes installation simpler than a full case locker, as it doesn't require removing the entire differential. The Spartan Locker uses a unique spring and pin system to aid in installation.

What does 100% lockup mean for my vehicle?

100% lockup means that both wheels on the axle are forced to spin at the exact same speed, regardless of traction. This is highly beneficial for off-roading or in slippery conditions, as it ensures power is sent to the wheel with grip, preventing you from getting stuck.

Does this locker come with all the necessary installation hardware?

The Spartan Locker includes a heavy-duty cross pin shaft. However, it's always recommended to consult the manufacturer's installation instructions or a professional mechanic to ensure you have all other required components and tools for a complete and proper installation.

USA Standard Spartan Locker For Model 35 w/ 27 Spline Axles and a 1.560in Carrier

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Specifications

Brand: Yukon Gear & Axle
Part #: SL M35-1.5-27
UPC: 883584170075

USA Standard Spartan Locker For Model 35 w/ 27 Spline Axles and a 1.560in Carrier

Name: USA Standard Spartan Locker For Model 35 w/ 27 Spline Axles and a 1.560in Carrier
Brand: Yukon Gear & Axle
Price: 708.89 USD
Availability: InStock

$708.89

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Yukon Gear & Axle Spartan Locker for Dana 35 axles with 27 spline. Delivers 100% lockup for reliable traction.

Key Features

Fits Dana Model 35 axles with 27 spline axles and a 1.560-inch carrier bore.
Provides reliable 100% lockup for maximum traction on demand.
Lunchbox-style locker design fits inside the factory differential case.
Features a unique spring and pin design that simplifies installation.
Includes a heavy-duty cross pin shaft for increased durability.
Eliminates the need for thrust washers in its design.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

Yukon Gear & Axle is well-known for making strong drivetrain components, and their Spartan Locker is a popular choice for drivers looking to significantly improve traction. This particular locker is designed for the Dana Model 35 axle with 27 spline axles and a 1.560-inch carrier bore. It's a lunchbox-style locker, meaning it fits inside your existing differential case, making installation more straightforward than a full case locker.

What makes the Spartan Locker stand out is its ability to provide a reliable 100% lockup. This means both wheels on the axle will spin at the same speed, no matter what, giving you maximum grip when you need it most, whether you're crawling over rocks or navigating slippery trails. The design is clever, eliminating the need for thrust washers and using a unique spring and pin system that simplifies the installation process. It also includes a heavy-duty cross pin shaft for added durability.

This locker is a solid option for a wide range of vehicles, including many Jeep models like the Cherokee, Wrangler, and Grand Cherokee, as well as older American Motors vehicles like the Eagle and Concord. If you're looking to get more out of your off-road adventures or need dependable traction in challenging conditions, the Spartan Locker is a well-built component that can make a big difference.