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HEAVY DUTY U-JOINTS   Neapco           Other Larger Trunnion Neapco       Other Thicker Cross Good Parts recommends Neapco heavy duty Universal Joints for axles and driveshafts. Longer, larger diameter trunnions provide 44% more needle bearing contact surface to handle the load and resist wear. Larger diameter trunnions and thicker cross protects against fracture Grease fitting is placed in bearing cap to avoid weakening cross. Precision ground trunnions and bearing cups extend life.