OTTO Excavator Parts Zx450 6Wg1 Intake Manifold Gasket 1096236590 109623-6590 1-09623659-0 For Isuzu OTTO Gasket for ZX450 Excavators: Designed for Isuzu 6WG1 intake manifold, part nos. 1096236590/109623-6590/1-09623659-0. Prevents leaks for stable operation.