... Corona, Celica, Crown, etc. United Material Piston Rings: for Toyota Engines Compression Ring | Intermediate Ring | Oil Ring We offer different ... optimized in their performance with electroplated, thermal-sprayed or other new coatings. Piston Ring Types: ♦ UM piston ring sets ... are used for this purpose. Application:Piston rings set for Toyota automobiles engines.Car Models: Bus, Truck, Aristo, Avensis, ...