🚗 Elevate Your Ride with Spartan Precision! Designed specifically for Dana 30 Front 27 Spline, 3.73+ ratio. Best performance with non-synthetic 80W-90 GL-5 gear oil. Experience smooth engagement and linear traction on any terrain. Crafted from forged 8620 steel alloy for superior strength. Enjoy worry-free performance with a maintenance-free design. 27 Spline Fitment Maintenance Free Forged Steel Durability The Spartan Locker Helical Limited Slip Differential is engineered for Dana 30 Front 27 Spline vehicles with a 3.73 and up ratio. Made from forged 8620 steel alloy, it ensures unmatched durability and smooth traction without the need for maintenance, making it the ideal choice for off-road enthusiasts and daily drivers alike.