OTTO Oil Cooler Gasket 8-97603889-0 (8976038890) is a dedicated sealing part for Isuzu engine oil cooler on ZX450-3 excavator. It forms a tight seal at the oil cooler mating surface to prevent engine oil leakage and maintain normal lubricating oil circulation.

OTTO Connecting Rod Bearing Set 9-12271608-0 (9122716080) is a core engine sliding bearing assembly specially designed for Isuzu 6BG1 engine equipped on Hitachi ZX200 excavator. It provides smooth friction buffer between connecting rod and crankshaft, reducing mechanical wear and ensuring stable high-speed rotation of engine internal components during construction operation.