The gasket for the Oil filter housing is discontinued and is NOT included in the master overhaul set. I decided to have some custom made, the part number is 15239-6P000. Manufactured in the USA, the gaskets are custom made stainless steel and graphite coated material, Graphite Sheet with 316SS Insert (BSSC) - Grey. I have them listed on Ebay, but I will discount them for NICO subscribers.
Ed