Replaces: Mercury: 10-30206 | 10-805763 | 10-853163; GLM: 22430 Sierra: 18-2361 Years Used: 1986 - 2006 Fits: Mercury/Mariner 4-cyl, 65 Hp | 6-cyl, 70-100 Hp | V6, 150-225 Hp outboard gear housings, Propshafts, vac pumps, fuel lines, thermostat housings, carburetors and other applications. Fits:MerCruiser MC-1, R/MR/Alpha One, Bravo, SSM & Dry Six gear housings, Propshafts, vac pumps, fuel lines, thermostat housings, carburetors and other applications. 3/8" x 16 x 1.00" hex head.