Fresh Water Anode Kit for Mercruiser Alpha 1 Gen 1 Includes Hardware Replaces: Quicksilver 888755Q04, Martyr CMALPHAGEN1KITM, Seachoice 95011, Sierra 18-6150, Tecnoseal 20800MG For Fresh Water Use. Fits MERCRUISER ALPHA I GEN I & MR ANODE KIT INCLUDES HARDWARE FOR FRESH WATER USE Complete anode kit for 1984-1990 Mercruiser MR & Alpha One drives. Kit includes: 31640 Mercury/Mercruiser Standard Trim Tab Anode 821631 Mercruiser Alpha One Block Anode 55989 Mercury/Mercruiser Nut Anode (Qty 2) Alpha One Anode Mounting Hardware Kit This is a US Military Grade Anode Kit Made To The Highest Quality. Kit Includes Hardware. For Fresh Water Use. Replaces: Quicksilver 888755Q04, Martyr CMALPHAGEN1KITM, Seachoice 95011, Sierra 18-6150, Tecnoseal 20800MG