Eaton Detroit Locker Differential EAT187C148A, 30-Spline Rear 8.5/8.6-Inch Axles

The Detroit Locker is a 100% automatic locking differential that provides ultimate traction for mild to extreme vehicle applications. Its unique, bullet-proof design is engineered to keep both wheels in drive mode – even if one wheel is lifted off the ground. It works in forward and reverse, and features unmatched strength, 100 percent automatic locking, and maintenance-free parts. Detroit Locker® Differential; 30 Spline; 1.32 in. Axle Shaft Diameter; 2.73 And Up Ring Gear Pinion Ratio; Rear 8.5 in.; Rear 8.6 in.;

• Provides Maximum Amount Of Traction To Both Wheel Ends
• 100 pct. automatic locking - no driver action needed
• Clutchless Maintenance Free Design
• Works In Forward And Reverse

The Eaton Detroit Locker Differential is a fully automatic locking differential designed to deliver dependable traction for mild to extreme vehicle applications. Part number EAT187C148A features a rugged, clutchless design that automatically locks both axle shafts when traction is needed, helping maintain drive to both wheels even when one wheel loses contact with the ground. No driver input, electronics, or manual controls are required.

Engineered for rear axle applications using 8.5-inch or 8.6-inch housings, this Detroit Locker accommodates 30-spline axle shafts with a 1.32-inch shaft diameter and supports ring gear and pinion ratios from 2.73 through 5.13. Its locking action functions in both forward and reverse, making it suitable for demanding street, off-road, work, and performance vehicles. The maintenance-free construction eliminates clutch packs and helps provide long-term durability under severe operating conditions.

Key Product Specifications and Technical Data

• Brand: Eaton Detroit Locker
• Part Number: EAT187C148A
• Differential Type: Fully automatic locking differential
• Application: Rear axle
• Axle Housing Compatibility: 8.5-inch and 8.6-inch rear axles
• Axle Spline Count: 30 spline
• Axle Shaft Diameter: 1.32 inches
• Supported Gear Ratio Range: 2.73 through 5.13

What's Included

One Eaton Detroit Locker Differential for the specified rear axle application. Installation hardware, bearings, seals, and additional setup components should be verified separately based on the vehicle and axle configuration.

Features:

• Maximum traction: Helps deliver power to both wheel ends for improved forward movement and control.
• Fully automatic locking: Locks without driver action, switches, or electronic controls when traction demands it.
• Clutchless maintenance-free design: Eliminates clutch packs for durable, low-maintenance operation.
• Forward and reverse operation: Provides automatic locking performance while driving in either direction.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1