Installing an industrial 12 valve breather. This breather keeps crankcase pressure under control and stops oil leaks before they start. This industrial set up is an excellent design that locates the breather at the highest point of the engine and has its own built-in catch can that empties itself. Here are the part numbers to do this modification.(1) Aluminum breather valve cover 2830784(1) Plastic Breather 4899194 / 504069558(1) O-ring 4899195 / 500315795(3) Screws 4899092(3) Industrial bushing