RTS OE Spicer 1350 non greasable u-joint. Fits many GM productsSpicer OEM quality service replacement U-joints feature journal crosses that are manufactured from high-quality alloy forgings and heat treated for maximum life. The bearing cups are case hardened for strength and durability. The seals are made from nitrile rubber for optimum grease retention and contaminant exclusion. All of this is why we can say that genuine Spicer parts meet the rigorous Dana standards that have made Spicer the global leader in automotive u-joint technology. Yoke U-Joint Series:1350 Yoke Width: 3.625" MFG. Part #:5-178X Cap Diameter A:1.188" Cap Diameter B:1.188" Width A:3.625" Width B:3.625" Material Type:Steel Sold in Quantity:Each