Eaton 14232-1 Selectable ELocker Differential for 2007-2025 Toyota Tundra 5.7L V

Vehicle Fitment

• 2007-2025 Toyota Tundra (CrewMax, Double Cab, Access Cab; 5.7L V8; RWD / 4WD, 10.5" rear end)

Fitment Notes

• Only works with housings **not** equipped with OEM electric lockers.

Features

• Selectable (push-button) electrically-controlled locker differential for on-demand rear axle locking. 
• Net-forged 4-pinion gears for high strength and durability. 
• 36-spline axle shaft compatibility. 
• 10.5-inch ring gear diameter, 12-bolt pattern. 
• Designed for both off-road (rock crawl, trail, sand) and towing / work-truck duty. 
• Full enclosure, sealed housing; works in forward and reverse when locked. 
• Includes wiring harness and switch for control. 
• Validated performance and durability through Eaton's differential product line.

Specifications

• Part Number: 14232-1, Eaton ELocker Differential.
• Ring Gear Diameter: 10.5 inches. 
• Spline Count: 36 splines.
• Axle Position: Rear. 
• Engine: 5.7L V8. 
• Fitment through Year: 2025 confirmed. 
• Vehicle Drivetrain: RWD or 4WD (depending on the Tundra model). 
• Ring Gear Bolt Pattern: 12 bolt. 

Included Components

• 1x Eaton 14232-1 ELocker Differential assembly
• 1x Wiring Harness & Dash Switch for electronic locking control. 

Product Description

The Eaton 14232-1 ELocker Differential is a selectable, electrically controlled rear differential designed to give your 2007-2025 Toyota Tundra with a 5.7L V8 maximum traction when you need it, and open differential behavior when you don't. With its 10.5-inch ring gear and 36-spline axle shafts, this unit upgrades the rear axle for serious off-road, trail, or towing applications. The operation is simple: flip the dash-mounted switch and the ELocker locks both wheels for full torque delivery; flip again and it reverts to normal open differential mode, preserving tire life and drivability on pavement.

Installation requires replacing the existing rear differential carrier. Make sure your housing **does not** already have an OEM electronic locker, as the Eaton 14232-1 is incompatible in those housings. OEM ring gear bolts, carrier bearings, and shims from your current setup may need to be reused or replaced depending on wear and condition. Gear oil at the specification recommended by Eaton (GL-5 gear oil, correct viscosity) is needed. Fitment is confirmed through 2025.