MERCURY MARINER 8032 2 STROKE 143 THERMOSTAT KIT 100 115 125 4 CYL "L4" 803061T1

143 Degree Thermostat Kit for Mercury Mariner 2-Stroke

This 143 degree thermostat kit for Mercury Mariner 2-stroke outboards is designed for 100HP, 115HP, and 125HP four-cylinder L4 engines, using OEM reference 803061T1 to regulate cooling flow. The thermostat kit replaces worn cooling system parts in Mercury Mariner 2-stroke outboards to help prevent overheating.

Overview

This 143 degree thermostat kit for Mercury Mariner outboards fits 2-stroke 100HP, 115HP, and 125HP four-cylinder L4 engines. The kit, referenced as 803061T1, helps maintain correct cooling system temperature and supports overheat repairs on Mercury Mariner marine motors.

Built For Performance

• 143 degree thermostat element for consistent engine temperature control
• Replacement kit identified by OEM reference 803061T1
• Designed for 2-stroke Mercury Mariner four-cylinder L4 outboards
• Compatible with 100HP, 115HP, and 125HP Mercury Mariner outboards
• Supports cooling system service on inline four-cylinder marine engines

Fits These Machines

• for Mercury Mariner 100HP L4 2-Stroke
• for Mercury Mariner 115HP L4 2-Stroke
• for Mercury Mariner 125HP L4 2-Stroke
• for Mercury Mariner 4-Cylinder L4 Engines

On-The-Job Use

• Used when servicing the cooling system on Mercury Mariner 2-stroke outboards
• Installed during thermostat replacement on 100-125HP four-cylinder marine engines
• Helps prevent overheating during steady throttle operation
• Commonly used for routine outboard engine cooling maintenance

Specs At A Glance

Good To Know

Q: Will this thermostat kit fit a Mercury Mariner 115HP 2-stroke outboard? A: It is designed for Mercury Mariner 100HP, 115HP, and 125HP 2-stroke four-cylinder L4 engines. Always verify the engine serial number against OEM 803061T1 fitment data before ordering.

Q: What is the point of a 143 degree thermostat? A: A 143 degree thermostat opens once the engine reaches that temperature, allowing coolant to flow and keeping the outboard within its normal operating range. This helps prevent overheating and promotes stable marine engine performance.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.