Product Details: Non-greaseable 1555 series 1.375" cap diameter (D1 and D2 on the diagram) 3.737" snap ring distance (K1 on the diagram: distance between the ears on the axle shafts) Cold forged cross with heat treated caps NOTE: Keep caps MATCHED to the trunnions they are removed from! The volume of grease is precise. Interchanges with: AAM 74081555 (axle shaft location ONLY) Parts Included: (1) universal joint (4) internal snap rings Fits: 2010 and newer Dodge Ram 2500 and 3500 4x4 trucks with the AAM 9.25" front axle at the axle shaft location Brand: Dana Spicer Part Number: Dana Spicer 5-3212X Warranty: 6 month warranty and case by case basis. When you see the Spicer name, you know you are buying the highest quality product available. Spicer universal joints are no exception. Dana manufactures a full line of Spicer universal joints that are engineered to ensure longer life for vehicles in a wide variety of applications, from light vehicle to commercial and off-highway. 2010 Dodge Ram 3500 2011 - 2017 Ram 2500 2011 - 2017 Ram 3500