71℃ 160℉ Thermostat for Yanmar Komatsu 4D84 4TNE84 4D88 Excavator Loader Tractor

Thermostat for Yanmar Komatsu

This 71℃ 160℉ thermostat is a replacement coolant temperature regulator for Yanmar and Komatsu engines, including 4D84, 4TNE84, and 4D88, used in excavators, loaders, and tractors.

Overview

This 71℃ 160℉ thermostat for Yanmar Komatsu maintains proper engine temperature across a range of diesel machines. It controls coolant flow by opening at the rated temperature, helping prevent overheating and reducing wear on critical components. This thermostat for Yanmar Komatsu suits mixed fleets using 4D84, 4TNE84, or 4D88 engines.

Built For Performance

• Calibrated opening at 71℃ (160℉) for consistent thermal management
• High-grade metal and heat-resistant construction for durability
• Compatible with multiple engine models for versatile replacement use
• Direct-fit design sized for standard Yanmar and Komatsu cooling systems
• Reliable wax element for responsive operation across temperature ranges

Fits These Machines

• for Yanmar 4D84 engine
• for Yanmar 4TNE84 engine
• for Komatsu 4D88 engine
• for excavators, loaders, and tractors using compatible engines

On-The-Job Use

• Replacing a failed thermostat in excavators during service intervals
• Maintaining stable coolant temperature in loaders under high load
• Improving cold-start performance in tractors operating in varied weather
• Ensuring proper warm-up and preventing thermal shock in diesel engines

Specs At A Glance

Good To Know

Q: Will this thermostat fit both Yanmar and Komatsu engines directly? A: Yes, it is designed for these engine families, but confirm the housing style and flange dimensions match your specific engine model.

Q: What happens if the thermostat is stuck closed? A: It blocks coolant flow, causing rapid overheating and potential engine damage. Replacing it with this unit restores proper circulation.

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