YM129155-49801 71℃ Thermostat for Yanmar 3D84 4D84 3D88 4D88 3TN84 4TNE88 4TNV88

YM129155-49801 71℃ Thermostat for Yanmar 3D84 4D84 3D88 4D88 3TN84 4TNE88 4TNV88

This YM129155-49801 71℃ thermostat for Yanmar 3D84 4D84 3D88 4D88 3TN84 4TNE88 4TNV88 opens at 71 degrees Celsius to regulate engine coolant temperature, referencing OEM cross-reference YM129155-49801.

Overview

This YM129155-49801 71℃ thermostat for Yanmar 3D84 4D84 3D88 4D88 3TN84 4TNE88 4TNV88 maintains proper engine operating temperature by controlling coolant circulation. Designed for Yanmar diesel engines, this YM129155-49801 71℃ thermostat ensures efficient fuel combustion and reduced engine stress across a range of compact models. It is an aftermarket replacement that matches the original thermal rating.

Built For Performance

• Opens at 71℃ to maintain a consistent engine temperature
• Rugged wax-pellet design provides reliable actuation over time
• Precision-machined seating for leak-free operation
• Corrosion-resistant materials extend service life in coolant systems
• Compatible with multiple Yanmar engine families for broad utility

Fits These Machines

• for Yanmar 3D84 engine
• for Yanmar 4D84 engine
• for Yanmar 3D88 engine
• for Yanmar 4D88 engine
• for Yanmar 3TN84 engine
• for Yanmar 4TNE88 engine
• for Yanmar 4TNV88 engine

On-The-Job Use

• Commonly installed in compact construction equipment such as skid steers and backhoes
• Applied in marine auxiliary engines and small generator sets
• Used in agricultural machinery like small tractors and cultivators

Specs At A Glance

Good To Know

Q: How do I verify the correct temperature rating? A: Confirm the original thermostat's rated opening temperature in your service manual. This 71℃ unit should match the specification for your specific Yanmar engine model.

Q: Can this thermostat be used in a high-load application? A: Yes, it is designed for continuous operation under standard loads, but always ensure the cooling system is clean and properly pressurized for best results.

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