MOTIVE GEAR NV3500 C S 88-90 FLL SZ 1 GRV - WT290-8E

The Motive Gear D70-513 is an extreme torque 5.13 ratio gear set designed for heavy-duty towing, off-road traction, and performance driving. It is compatible with Dana 70, Dana 70HD, and Dana 70U axles, requiring a carrier for 4.56 and numerically higher gear ratios, and is for use in rear differential positions with standard gear rotation. Engineered for strength and durability, it is precision-forged from 8620 steel, featuring a 10.5" ring gear and 1.75" pinion shaft for long life under tough torque loads. The gear set meets OE-matching specs with a 12-bolt ring gear, 29-spline pinion, 8 pinion teeth, and 41 ring gear teeth, machined for quiet operation and optimal gear mesh. It offers wide compatibility, fitting select GM, Dodge, and Ford trucks and vans from 1960–2010, and is backed by a 1-year or 50,000-mile manufacturer warranty.