All oil filters feature a new improved gasket design to ensure sealing and longevity. The outer shell is constructed from heavy gauge steel to withstand many times the normal operating oil pressures and temperatures. The inner multi-pleated filter is designed to trap the smallest particles and remove them from the engine. They are supplied as original equipment by many of the world's leading automobile manufacturers. These high quality oil filters are now available for all models of VW and Porsche engines. Oil fillers are also available to fit full flow oil pumps and Rapid Cool Oil Systems.