This is our “Super Duty” oil pump plate kits. They are approximately .250″ thick and are machined with anti-cavitation / anti-gall grooves. These plates are nearly twice as thick as the stock plates (.125″) which means they will not flex like the stockers. That helps your engine maintain steady, consistent oil pressure under severe loads. The plates are precision ground to be flat with the pump housing as well. A MAJOR improvement over the plates that come with most Pontiac oil pumps.