18-3638 Outboard Thermostat for Mercury Mariner | JLM Marine family-mercury-850hp Reinstall any retaining clips or

Reinstall any retaining clips or fasteners to secure the new cap guide firmly in place

Thoroughly clean the mounting area on the transom shield to ensure a clean surface for a proper seal

This inline fuel filter is designed for Honda 4-Stroke outboard motors from 8 HP to 30 HP (1998–Present)

You may need to tilt the drive for better access

Q: What are the signs that my ignition coil needs replacement

18-3638 Outboard Thermostat for Mercury Mariner | JLM Marine family-mercury-850hp Reinstall any retaining clips orThermostat for Mercury Mariner Outboard Fits 2. 5 6 HP Models This high quality aftermarket thermostat is engineered to fit Mercury Mariner 2 stroke outboard engines ranging from 2. 5 HP to 6 HP. Designed as a direct replacement for OEM part numbers 804540 and 853704, it ensures reliable temperature regulation for your outboard motor. The kit includes both the thermostat and a rubber seal ring, providing everything needed for a complete installation.