Termostater

Thermostat kit that fits Mercury F8-30 and 40HP EFI 3-Cyl with serial numbers 1C456300 & up.

Thermostat 62°C that fits Mercury V-6 OPTIMAX (2.5L, NON-PRO MODELS) 1B227000 & up

THERMOSTAT 62°C that fits Mercury 75-90-115 OPTIMAX (1.5L) 1B227000 & up

Includes 43°C degree thermostat and gaskets. Fits various Mercury / Mariner 40/50/55/60 hp. 2 cycle 3-cyl outboards. See application chart for specific engine models.

Thermostat 54°C that fits Mercury V-6 OPTIMAX (3.0L, NON-PRO MODELS) 1B227000 AND ABOVE

Includes thermostat and housing that fits Mercury 75-90-115 HP FOURSTROKE 1B366823 & up, 75-90-115/115 PRO XS HP FOURSTROKE 2B094996 & up, 150 EFI FOURSTROKE 1B905505 & up

60°C degree thermostat for select Mercury 175‑300hp and 450R 3.4L V6 and 4.6L V8 4‑stroke outboards (s/n: 2B529482 & above)

Thermostat 49C that fits Mercury F40/50/60 s/n 2B094996 & up

Thermostat housing, 60°C. The additional seals, gaskets, clamps and attaching hardware sold separately. See your owner's manual or service manual for more information. 135‑175hp L4, 200‑400hp L6, and 400R L6 FourStroke outboards.

Includes top and bottom housing, 71°C degree thermostat, 60°C degree thermostat, spring, retainer, gasket, O‑ring, plate, and hardware. Thermostat assambly fits Mercury 7.6L V12 600HP VERADO & 500HP SEAPRO

THERMOSTAT ASSY Mercury 5.7L V10 350hp and 400hp Verado