Trigger Mercury Mariner 4 Cylinder | CDI 134-6452 CDI Electronics Mercury Mariner 4 Cylinder Trigger | 134-6452 Replacement straight arm trigger for various 30 JET, 40 HP, 45 HP, 50 HP, 80 HP, & 85 HP Mercury/Mariner outboard engines from 1976-1997. CDI Electronics outboard trigger Trigger has straight linkage arm Fits many Mercury and Mariner 45 HP engines from 1981-1989 Fits many Mercury and Mariner 50 HP engines from 1976-1985 Fits many Mercury and Mariner 80 HP engines from 1978-1979 Fits many Mercury and Mariner 85 HP engines from 1976-1977 CDI determines the most common causes of component failure and designs their replacements to be better than the original Replaces Mercury 73372A1, 73410A 1, 76681A1, 77000A2, 96452A1, 96452A4, and 96452A5