The Eaton Detroit Locker 916A566 is a Truetrac limited-slip differential designed for Dana 80 rear axles. It carries a 37-spline count, a 1.6 in. axle shaft diameter, and an 11.5 in. ring gear, with compatibility covering 3.73 and numerically higher gear ratios. Application coverage spans General Motors and Ford one-ton HD trucks, vans, wagons, and cab-and-chassis configurations from 1992 through 2007 and 1996 through 2016 depending on make. Vehicle usage ratings include on-road work truck and towing duty, drag racing, circle track, street and muscle builds, and off-road use from light trail and sand sports through rock crawling and extreme off-road. Call us to confirm proper fit for your specific axle ratio and model year.
Features
Detroit Truetrac limited-slip differential design
Dana 80 rear axle fitment
37-spline gear tooth count
1.6 in. axle shaft diameter
11.5 in. ring gear size
Rated for gear ratios of 3.73 and numerically higher (deeper)
Tech Specs
- Ring Gear Ratio: 3.73 and down (numerically higher ratios included)
- Differential Type: Limited Slip (Truetrac)
- Axle Description: Dana 80
- Axle Location: Rear
- Ring Gear Size: 11.5 in.
- Axle Shaft Diameter: 1.6 in.
- Gear Spline Tooth Count: 37
- Vehicle Make: General Motors, Ford
- Vehicle Type: One-Ton HD Truck, One-Ton Truck, Van, Wagon, Cab and Chassis
- Model Year Range (GM): 1992-2007
- Model Year Range (Ford): 1996-2016
- Vehicle Usage: On-Road Work Truck / Towing, Drag Racing, Circle Track, Street and Muscle, Off-Road Light Trail / Sand Sports, Off-Road Rock Crawl, Off-Road Extreme Off-Road, Off-Road Work Truck / Towing
