A sun pinion cover for an electric motor driven, off-highway vehicle transmission is provided wherein the transmission defines a hub assembly cavity and a transmission opening and wherein the transmission includes a reduction gear set having a low-speed pinion and at least one low-speed planet, wherein the reduction gear set is disposed adjacent the transmission opening. The sun pinion cover includes a cover body which defines a first lubricant port, a second lubricant port and a lubricant conduction channel which communicates the first lubricant port with the second lubricant port, such that when the cover body is attached to the transmission, the first lubricant port is disposed adjacent the low-speed pinion and the low-speed planet and the second lubricant port is disposed adjacent the hub assembly cavity to allow for a lubricant flow between the low-speed pinion, the low-speed planet and the hub assembly cavity.