Ford part number is F81Z-9C968-AB (replaces the F81Z-9C968-AA). This is an OEM replacement part new. The IPR valve (Injector Pressure Regulator) fits all the Powerstroke 7.3 Turbo Diesel from '95.5 (with an engine serial number higher then 187100) to '03 models.

This is the Injector Pressure Regulator mounted on the high pressure oil pump. Without the edge filter.* 1995 1/2 to 2003 E-Series Super Duty vans & F-Series Super Duty trucks with 7.3 DI Powerstroke Turbo Diesel (with engine serial higher then 187100)