Eastern Industries provides a low-cost OE style water pump replacement solution for your 6.6L Duramax. While buying the pump and housing together can be rather cruel to the wallet, purchasing just the pump side with the included gaskets is a great way to save a little money, and cure that itch to do it yourself. All the o-rings and gaskets you need are included, so you can get your truck right back to work. With an aluminum case and polymer impeller, you get the same OE style part, without parts you don't need so you can yourself a little extra cash.