Thermostat 129155-49801 for Yanmar 3TNE88 4TNV84 4TNE84 3TNV84 4TNV84T Engine

Thermostat 129155-49801 for Yanmar 3TNE88 4TNV84 4TNE84 3TNV84 4TNV84T Engine

This thermostat 129155-49801 for Yanmar 3TNE88 4TNV84 4TNE84 3TNV84 4TNV84T engine regulates engine coolant flow to maintain optimal operating temperature, referencing OEM cross-reference 129155-49801.

Overview

This thermostat 129155-49801 for Yanmar 3TNE88 4TNV84 4TNE84 3TNV84 4TNV84T engine ensures the engine reaches and holds its ideal temperature range for efficient combustion and reduced wear. Designed for Yanmar industrial diesel engines, this thermostat 129155-49801 for Yanmar 3TNE88 4TNV84 4TNE84 3TNV84 4TNV84T engine opens and closes precisely to control coolant flow. It is a direct replacement for the original unit, restoring proper thermal management for reliable operation.

Built For Performance

• Precision opening temperature for consistent engine thermal regulation
• Durable construction resists corrosion and thermal fatigue
• Factory-matched calibration for Yanmar cooling system specifications
• Direct fit design simplifies installation with standard tools
• Replaces worn or stuck thermostats to prevent overheating

Fits These Machines

• for Yanmar 3TNE88 engine
• for Yanmar 4TNV84 engine
• for Yanmar 4TNE84 engine
• for Yanmar 3TNV84 engine
• for Yanmar 4TNV84T engine

On-The-Job Use

• Used in excavators and mini excavators powered by Yanmar engines
• Installed in agricultural tractors and compact loaders
• Applied in generator sets and industrial pumps driven by Yanmar diesel engines

Specs At A Glance

Good To Know

Q: How do I know this thermostat fits my engine? A: Check your engine model plate or service manual to confirm the engine series matches the listed models. Cross-reference your original part number with 129155-49801 for added certainty.

Q: What happens if the thermostat is stuck closed? A: A stuck-closed thermostat blocks coolant flow, causing overheating and potential engine damage. Replacing it promptly restores normal temperature regulation.

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