You'll need Allen head wrenches to install this circuit breaker
keeping them safe from the harsh marine environment when not in use
Industry-leading Humminbird Sonar:
and eliminating the 2" deadband of the TLM100/TLM150
Regitar USA Ignition Module f/Mercruiser Engines: 350MAG MPI, 4.3L, 5.0L, 5.7L Engines (1981-97) w/THUNDERBOLT Electronic Ignition [RMG005] Marine Navigation & Instruments | GPS - Track Plotter You'll need Allen head wrenchesIgnition Module for Mercruiser Engines: 350MAG MPI, 4. 3L, 5. 0L, 5. 7L Engines (1981 97) with THUNDERBOLT Electronic Ignition Ignition Module for Mercruiser Engines: 350MAG MPI, 4. 3L, 5. 0L, 5. 7L Engines (1981 97) with THUNDERBOLT Electronic Ignition. Engine Brand: Mercury Mercruiser Fitment: 350MAG MPI, 4. 3L, 5. 0L, 5. 7L engines (1981 97) with THUNDERBOLT electronic ignition Brochure (pdf)