Detroit Locker 19555-010 Eaton Posi Limited-Slip Differential GM - 12-Bolt 30-Spline 4-Series

The Detroit Locker 19555-010 is an Eaton Posi limited-slip differential carrier designed specifically for 1964-1972 GM 12-bolt passenger car rear axles. This high-performance differential prevents wheel slip before it starts by utilizing race-bred carbon disc clutch packs that are pre-loaded by a central spring assembly, providing superior traction for muscle cars, street rods, and performance applications.

Key Features:

• Clutch-type limited-slip design with pyrolytic carbon friction discs
• 30-spline configuration with 1.29-inch axle shaft diameter
• Designed for 4.10 and numerically higher gear ratios (4-Series carrier)
• Fits GM 8.875-inch (12-bolt) passenger car axles with 12 cover bolts
• Steel construction for maximum durability
• Smooth, automatic operation requiring no driver input
• Rebuildable design for long-term serviceability
• Net-forged gears for added strength

How It Works: When torque input increases or one wheel begins to slip, the clamping load on the clutch packs automatically increases, causing them to smoothly and quietly transfer power to the wheel with better traction. This chatter-free operation delivers consistent performance throughout the life of your vehicle.

Application: This 4-Series carrier is specifically engineered for GM passenger cars including Chevelle, Camaro, Nova, Impala, GTO, Monte Carlo, and El Camino models from 1964-1972. Carrier bearings are not included and must be purchased separately.

Note: Eaton's Posi limited-slip differential technology dates back to 1961 and achieved icon status when offered as an option on GM muscle cars throughout the 1960s and 1970s. Backed by Eaton's century of engineering expertise and rigorous testing standards.