The reason I went with the OEM lift pump ($139.00 @ www.hoelsidiesel.com ) is because they are available every where in the country, and since I mounted it off engine I expect it to last longer not having to deal with the engine vibration. The original one to the truck had 96K on it when I swaped it out for a new one. Also I can change the pump out on the frame in about 15 minutes since its all out in the open now.