Mitchel has the horizontal cooler listed at 7.4 hrs. I believe you can buy and EGR cooler kit that contains all the needed parts to replace the cooler. You only really need the 2 gaskets, rear bolts, front studs and nuts, and the 2 clamps. If you are not picky about putting the little clamp holder thingys in, you don't need to remove the holder off the exhaust manifold. If you are, then you will also need exhaust manifold gaskets. Note: the labour time includes time for exhaust manifold removal.