4 0 Eaton Rear Differential Recently Updated $1,840 USD RS402 3.90 REBUILT +$650 Core, Yoke; N/A, Side gear; 41 Spline, Input; 39 Spline, Non-Locker ConditionRemanufacturedRear End3.90 ratioStock Number12900 MLS Number13531771CategoryDifferentials, Rear Last Updated12/10/2025 LocationSpokane Valley, WA, US Sold ByHigh Mountain Horsepower (833) 913-___ SHOWNUMBERCall Seller Email Seller Save More Info