6CE-12411-00-00 Yamaha 225-300 HP 4-Stroke Thermostat Replaces 6CE-12411-00-00

Thermostat for Yamaha 225-300 HP 4-Stroke

This high-grade thermostat for Yamaha 225-300 HP 4-stroke outboards is a direct replacement for the original thermostat, restoring correct warm-up time and cooling-system performance. It fits the original Yamaha part 6CE-12411-00-00-00 and keeps engine temperatures in the ideal range.

Overview

This cooling-system thermostat for Yamaha 225-300 HP 4-stroke outboards opens and closes at the correct temperature to keep the motor from running cold or overheating. Engineered as a long-lasting service replacement, it is built for daily use in tuna and offshore marine engines. A reliable thermostat for Yamaha brings cooling system performance back to spec.

Built For Performance

• Heat -responsive valve opens and closes at the set point for quicker stablization
• Corrosion-resistant body holds up to saltwater and vibrations
• Includes the mounting gasket for a leak-free seal
• Direct OEM fit with no drilling or grinding
• Pre-sets before production for set climatic ranges

Fits These Machines

• for Yamaha 225 HP 4-stroke outboard engine
• for Yamaha 250 HP 4-stroke outboard motor
• for Yamaha 275 HP 4-stroke outboard
• for Yamaha 300 HP 4-stroke outboard

On-The-Job Use

• Replacing a damaged failed thermostat when the fishing engine shows a cold-cock
• Fixing a dilapidated or stuck cooling system on older 4-stroke engines
• Seasonal cooling-system service or winterization for four stroke powerheads

Specs At A Glance

Good To Know

Q: Is this a direct Factory installation for my Yamaha outboard? A: Yes, it installs like the original and is made for the 225-300 HP 4-stroke engines.

Q: Will a bad thermostat make my motor overheat? A: If the thermostat is stuck closed, motor water can bypass back into the block, so replacing a failed unit restores correct cooling.

Slight variation in finish or dimensions may happen between production runs, and fit can depend on the serial number, so verify compatibility before order.