Yukon Gear & Axle SL Spartan Locker for GM Spline Differential Spool

The Yukon Gear & Axle Spartan Locker is a mechanical differential locker. It installs in an open differential carrier and replaces the factory spider gears. It is a more robust alternative to a typical lunchbox-style locker. It is also sold under the USA Standard Gear Spartan Locker name.

Key Features:

• Drop-in design: fits inside a standard open carrier case, so you don't need a full differential replacement.
• Heavy-duty cross pin shaft: included with the locker.
• Made in the USA: built under the Yukon Gear & Axle and USA Standard Gear brands.
• Built for traction: helps deliver more consistent power to both wheels in off-road, trail and performance use.
• Open carrier applications: intended for open carriers rather than limited-slip units.

Yukon Gear & Axle is a well-known name in ring and pinion gears, lockers, axles and differential components. The Spartan Locker gives enthusiasts a durable, cost-effective way to upgrade traction. Choose the child item that matches your differential and axle configuration.