Introducing the OEM 4638628 Muffler for HITACHI Excavators, compatible with models ZX450-3, ZX450-3F, and ZX470H-3. This high-quality engine part ensures optimal performance and durability. Packaged in standard export cartons, it’s ready for quick shipping—within just 1-3 days! With 15+ years of experience and a 12-month warranty, we guarantee top-notch service and reliability. Welcome to visit our website!