Komatsu 6D114 6CT Engine Thermostat 6741-61-1610 5274887 for Excavator & Truck

Product Details

Product Overview

This premium replacement thermostat, identified by OEM numbers 6741-61-1610 and 5274887, is specifically designed for the Komatsu 6D114 and Cummins 6CT series diesel engines. As a critical component of the engine cooling system, this thermostat ensures the engine reaches its optimal operating temperature quickly and maintains it, reducing wear, improving fuel combustion, and extending engine life.

Manufactured to original equipment (OEM) size and specifications, this part is commonly used in heavy-duty applications where engine reliability is paramount. Whether installed in a Komatsu excavator, a Cummins-powered truck, or a heavy loader, this thermostat provides the precise temperature control required for demanding work cycles. It is a direct-fit replacement designed to restore your engine’s cooling system to factory performance standards.

Key Features & Benefits

• Direct OEM Replacement: Matches original Komatsu part number 6741-61-1610 and 5274887 for a hassle-free installation with no modifications required.
• Precise Temperature Regulation: Opens and closes at the correct temperature threshold to prevent engine overheating or running too cold, ensuring optimal combustion efficiency.
• Durable Construction: Built with corrosion-resistant materials to withstand the harsh conditions of off-road and heavy-duty environments.
• Enhanced Engine Protection: Consistent operating temperature reduces thermal stress on cylinder heads, gaskets, and other critical components.
• Improved Fuel Economy: Correct operating temperature leads to more complete fuel combustion, reducing overall fuel consumption and emissions.
• Rigorous Quality Testing: Each unit is inspected to ensure proper opening and closing function before shipment, providing high fit confidence.

Technical Specifications

OEM Cross-Reference

This thermostat is a direct cross-reference for the following original equipment numbers. Please verify your existing part number matches one of the following before ordering:

• 6741-61-1610 (Komatsu)
• 5274887 (Cummins)

Note: Always compare the physical dimensions and mounting pattern of your old thermostat with this unit to ensure a perfect fit.

Compatibility

This thermostat is commonly used for the following engine models and applications:

• Engine Models: Komatsu 6D114, Cummins 6CT (including 6CT8.3 variants)
• Vehicle Applications: Excavators, Bulldozers, Wheel Loaders, Forklifts, Dump Trucks, and Heavy-duty Buses.

Fitment is inferred based on OEM specifications. Always consult your engine service manual for the correct part number.

Global Supply & Distribution

Our inventory is strategically managed to support international B2B buyers across key markets. We offer reliable worldwide shipping to industrial hubs in:

• North America: Los Angeles, Houston, Chicago, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Singapore, Shanghai, Tokyo, Sydney
• Middle East & Africa: Dubai, Jeddah, Durban
• South America: Santos, Buenos Aires, Callao

We provide fast delivery via sea freight (FOB/CIF) and air express (DDP) for urgent orders. Our export documentation is fully compliant with international trade standards, ensuring smooth customs clearance.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities with strict quality control processes.
• Testing: Each thermostat undergoes a machinery test report and video outgoing inspection to verify activation temperature and seal integrity.
• Warranty: Backed by a 6-month warranty against manufacturing defects. Within 6 months of purchase, defective units are eligible for replacement.
• Packaging: Securely packed to prevent damage during international transit.

FAQ

Q1: Will this thermostat fit my Komatsu PC200-8 excavator with a 6D114 engine?
A: This thermostat is designed for the 6D114 engine platform, which is common in many Komatsu excavators, including the PC200-8 series. To confirm, please check your old part number. If it reads 6741-61-1610 or 5274887, this unit is a direct replacement.

Q2: What is the correct installation procedure for this thermostat?
A: Installation involves draining the coolant, removing the thermostat housing, replacing the old unit with this new one (ensuring the jiggle pin is oriented correctly for air bleed), cleaning the mating surface, installing a new gasket, and refilling the coolant. We recommend consulting your engine service manual for specific torque settings and bleeding procedures.

Q3: How do I know if my thermostat is failing?
A: Common symptoms include the engine overheating, slow warm-up, or the temperature gauge fluctuating. You can test this thermostat by placing it in a pot of water with a thermometer. It should begin to open at the specified temperature (typically around 82°C or 180°F for these engines). If it remains closed or does not open fully, it needs replacement.