Description
The Eaton Detroit Locker 250S27 is a locking differential designed for General Motors one-ton HD truck rear axles rated at 11,000 lb., through model year 1986. It fits the GM 12-inch ring gear housing and uses a 27-spline, 1.75-inch diameter axle shaft. The No-SPIN locking design works across all ring gear ratios, so ratio changes do not require a different unit. Applications span street and muscle cars, drag racing, circle track, restoration builds, rock crawling, extreme off-road, and heavy towing. Call us to confirm fitment for your specific axle build before ordering.
Features
Eaton Detroit Locker No-SPIN locking differential, part number 250S27 or 250S-27
Fits General Motors one-ton HD truck rear axles rated at 11,000 lb., through 1986
12-inch ring gear housing; compatible with all available ring gear ratios
27-spline axle shaft engagement; 1.75-inch axle shaft diameter
Rear axle location; suits on-road and off-road use including rock crawl, towing, and drag racing
Tech Specs
- Differential Type: Locking (No-SPIN)
- Axle Description: GM 11,000 lb. One-Ton HD Truck
- Axle Location: Rear
- Ring Gear Size: 12 in.
- Gear Spline Tooth Count: 27
- Axle Shaft Diameter: 1.75 in.
- Gear Ratio Compatibility: All
- Vehicle Make: General Motors
- Model Year: Through 1986
- Vehicle Usage: On-Road (Street, Drag Racing, Circle Track, Restoration, Work Truck/Towing); Off-Road (Rock Crawl, Extreme Off-Road, Light Trail/Sand Sports, Work Truck/Towing)
