... Rav4, Corona, Celica, Crown, etc. United Material Piston Rings: for Toyota Engines Compression Ring | Intermediate Ring | Oil Ring We offer different ... iron materials or steel material is used. Special coatings can be applied to the ring faces of piston rings to ... are used for this purpose. Application:Piston rings set for Toyota automobiles engines.Car Models: Bus, Truck, Aristo, Avensis, Caldina, ...