sixteen components are shown in this Gl1500a Goldwing Aspencade 1992 (n) Spain / Kph Oil Filter/water Pump exploded diagram.
Some items from this specific schematic: Bolt,flange,6x95, O-ring,18.3x2.3, Oil Filter Cartri, O-ring 32.95x2.62.
With two applications this Pipe,water Inlet is the most specified part.