Thermostat 129155-49801 for Yanmar 3D84E 3D88E 4D88E Komatsu PC35R-8 PC45R-8

Product Overview

This thermostat 129155-49801 regulates engine coolant temperature to prevent overheating in Yanmar and Komatsu equipment. Designed for diesel engines in compact excavators and industrial machinery, this thermostat ensures consistent operating temperatures for reliable performance. Replacing a worn thermostat helps maintain fuel efficiency and engine longevity.

Key Features & Performance

• Direct replacement thermostat for Yanmar 3D84E, 3D88E, 4D88E and Komatsu PC35R-8, PC45R-8
• Precision temperature control for optimal engine warm-up and cooling
• Rugged construction withstands high-temperature engine environments
• Engineered to match OEM specifications for seamless installation
• Helps prevent engine overheating and reduces wear on cooling system components

Fitment & Compatibility

• Yanmar 3D84E
• Yanmar 3D88E
• Yanmar 4D88E
• Komatsu PC35R-8
• Komatsu PC45R-8

Common Uses

• Cooling system maintenance for compact excavators
• Replacement for worn or stuck-open thermostats in diesel engines
• Ensures proper engine temperature during heavy lifting and digging operations

Technical Specifications

• Part Number(s): 129155-49801
• Type: Wax pellet thermostat

Frequently Asked Questions

Q: Will this thermostat fit my Yanmar 3TNE84 engine? A: This part is designed for Yanmar 3D84E, 3D88E, and 4D88E engines. Verify your engine model before purchase.

Q: What is the opening temperature of this thermostat? A: The thermostat opens at approximately 82°C (180°F) to maintain proper engine operating temperature.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.