Used 1997 Mercury 9.9 twin cylinder 4 stroke outboard motor Cylinder Head Assembly part# 900-825720, Cylinder Head Cover part# 825484, Fuel Pump part# 827742, Oil Pump Assembly part# 825456,  Camshaft part# 825454, Valve Rocker Arm part# 825447, Valves part# 825439 & 825440.  Part numbers are per online manuals. This Mercury outboard motor was assembled in USA with serial number 0H001645. Similar models had serial number range of 0H000058 to 0H016909. Since these parts are over 10 years old we suggest that all gaskets & seals & filters should be replaced. Re-torque all bolts, check & adjust valve clearances. To avoid injury, harm or malfunction we suggest that all parts should be installed by a certified outboard motor mechanic. We only ship to Canada & USA. NOTE: When we ship to USA, we ship with Canada Post and they forward it to USPS for final delivery which takes about 10 business days plus US Customs delays.