This is a Prestolite marine distributor moisture guard.   Prestolite #SRP-2805 (97-97).  4 cylinder.

These kits remove/neutralize corrosive gases that develop within distributors!

New old stock (NOS).  Will combine shipping with multiple purchases!  Will ship internationally using Ebay's Global Shipping Program.  Please note Ebay will charge and collect sales tax based on your state.