Piston Ring Sets: for Toyota. Bus, Truck, Aristo, Avensis, Caldina, Camry, Carina, Estima ... | Oil Ring We offer different versions of piston ring sets in original equipment quality as well as for older engines ... other new coatings. Piston Ring Types: ♦ UM piston ring sets are designed to suit and fit on both original and ... Vista, Vitz, Windom. Compression Rings: Oil Rings: Piston Ring Sets: for Toyota