OTTO Excavator Parts Npr66 4Hf1 Exhaust Manifold Gasket 8970615420 897061-5420 8-97061542-0 For Isuzu This product is an exhaust manifold gasket designed for the Isuzu engine model 4HF1 in the Npr66 excavator series. It is a crucial part for maintaining the integrity of the exhaust system, ensuring optimal performance and reducing emissions.