Sierra Marine 18-5983 Sierra Marine Alternators Bumpers while the engineered intake tube

while the engineered intake tube delivers higher velocity airflow to the throttle body compared to the stock plumbing

Compatible with factory and aftermarket exhaust systems

Using OEM-quality marine components is critical for reliability on the water

and charging of the refrigerant system using the correct type and quantity of refrigerant is essential after any A/C component replacement

keeping gear oil from breaking down under sustained heat

Sierra Marine 18-5983 Sierra Marine Alternators Bumpers while the engineered intake tubeThe Sierra Marine 18 5983 Sierra Marine Alternators is a marine grade alternator built for demanding saltwater and freshwater applications. It meets SAE J1171 marine ignition protection standards and delivers reliable charging in corrosive environments where standard automotive alternators fail prematurely. Designed as a direct replacement for MerCruiser and OMC marine propulsion systems, it provides consistent output for batteries and electronics.