A transfer case for a normally rear wheel drive vehicle with selective four wheel drive capabilities is provided. The transfer case has an intermediate gear driven lubrication pump, wherein the machining required for the lubrication pump is almost exclusively conducted from an interior side of the rear shell. The transfer case of the present invention also eliminates the requirement for a cover plate for the pump and an external lubrication tube. The transfer case of the current invention has an internal lubrication pump outlet which has a portion extending in a reinforcing mound of the rear shell thereby providing greater stiffness to a portion of the rear shell supporting the main input shaft rear bearings.