Please contact us directly before purchasing so we can make sure we have the locker for your application if not listed in the drop down menu Free shipping for all locker purchases Application Chart TRE4x4 Locker Deffirential Catalog Specs: Shaft spline: 27 Original ring and pinon gear ratio: 3.73&up Color: Silver Material: Forged alloy steel Axle diameter: 29.5mm (1.16 inches) Gear material: 4320 chromoly alloy steel Note: The locker's design is based on the original ring and pinion gear ratio, when you confirm the locker model , please based on your car's original data. The package includes: 1x Electric locker Switch Wiring harness Wiring connectors Installation manual All necessary mounting hardware Important notes: We prioritize the safety and satisfaction of our customers. We highly recommend professional installation. Specialists ensure efficiency without compromising quality. For any questions or clarifications regarding package contents, specifications, pricing, shipment, installation, and more, feel free to contact us at any time. (See the contact page for more information) About the product: The TRE electric locker, featuring 27 spline, is designed for 1.16″ axle shaft diameter. Made from forged steel alloy, it delivers exceptional strength and stability. With the simple press of a button, the electric locking differential engages, locking the wheels to ensure maximum traction and the ability to overcome any obstacle with ease. The system offers a perfect balance of power and stability, making it an excellent choice for daily adventures as well as the most demanding conditions.