Quicksilver 8M0162139 Replacement 140 Degree F Thermostat for Select Mercury Outboards

Thermostat 8M0162139 is for 175-300hp and 450R 3.4L V6 and 4.6L V8 4-stroke outboards (serial No. 2B529482 & above). It is a 140°F thermostat. Thermostat only. Additional seals or gaskets may be required. See your owner's manual or service manual for more information.

• 140°F thermostat for select 175-300hp and 450R 3.4L V6 and 4.6L V8 4-stroke outboards (serial no. 2B529482 & above)

• Corrosion-resistant stainless steel delivers increased service life

• Self-cleaning design allows cooling system contaminants to flush through closing surfaces

• Calibrated for proper cooling system temperature response to deliver peak engine performance and highest efficiency

• Easy to replace with common tools

• See your owner's manual for removal of non-functioning thermostat and replacement of new thermostat