Quicksilver 8M6010302 Thermostat 143°F for Evinrude Johnson OMC 2-Stroke Outboards

The Quicksilver 8M6010302 is a 143°F replacement thermostat engineered to OEM specifications for select Evinrude, Johnson, and OMC 2-stroke outboard engines. Designed as a direct-fit replacement, this thermostat helps maintain proper engine operating temperature to protect against overheating and ensure reliable performance on the water.

Key Features:

• 143°F (62°C) thermostat engineered to meet OEM specifications
• Compatible with select 6–55hp Evinrude, Johnson, and OMC 2-stroke outboards
• Also compatible with V4 and V6 Crossflow outboard engines
• Thermostat only — hardware, gaskets, and seals sold separately
• Replaces OEM part numbers: 434841, 378065, 393659
• Aftermarket cross-reference: Sierra 18-3553

Refer to your engine's owner's manual or service manual for specific application details and installation procedures. This thermostat is a thermostat-only replacement; all associated hardware, gaskets, and seals must be sourced separately.