I can share my experience with Flowkooler. I bought one almost 2 years ago through 4wheelparts store. It arrived, they called me. I opened the box at home. Mine came with 2 gaskets. Reason being was you have to move the pump a little further away from the engine block because the pump blades had a plate pop riveted over it to capture more water apparently. Problem I had was even with the extra gasket, the rivets were still hitting the exterior wall of the piston cast on the block when I tightened the pump bolts down, and spun the pump shaft. What I had to do was literally bend the blades of the pump a little closer to the pump housing, just to get that little extra clearance away from the engine block. That was frustrating as I was pressed for time and did not have time to just return it, and I would have if I had time. I ran that pump for almost a year. I did like it, and liked the concept. It moves more volume of water through the engine at lower rpms. The bearing proved to be strong. What happened was it started leaking from the doubled gaskets. Gaskets are not made to be doubled up like that. I had a factory new waterpump, so I just replaced it with that. I still have to Flowkooler pump on the shelf, just sitting there with the pop rivets and circular sheet metal shroud secured to the blades. It is an interesting concept, but a design flaw imo in how they made mine. I don't know if they improved the design or not on the ones they are selling now. I would hope so. I would buy another one if that is the case, if not, they can keep it.
Last edited by moonshinefuel; 04-01-2010 at 12:02 AM..