6D107 Thermostat 5256423 for Komatsu Engine Parts Excavator Loader Diesel

Product Details

Product Overview

This is a premium-quality Thermostat, specifically designed for the Komatsu 6D107 diesel engine. As a critical component of the engine cooling system, this part ensures that the engine reaches and maintains its optimal operating temperature quickly, improving fuel efficiency and reducing emissions. The part number 5256423 is the exact OEM reference for this application, guaranteeing a precise fit and reliable performance.

Sourced from a trusted manufacturer in Guangdong, China, this thermostat delivers exceptional thermal response and durability. It is a direct replacement for the original equipment part, making it an ideal solution for maintaining or repairing Komatsu heavy machinery, including excavators, loaders, and bulldozers. While primarily designed for the 6D107, we recommend verifying your specific engine serial number for absolute compatibility.

Key Features & Benefits

• Exact OEM Fitment: Manufactured to match the original 5256423 specifications, ensuring a direct, hassle-free installation without modifications.
• Optimal Engine Temperature Control: Precisely regulates coolant flow to help the engine reach operating temperature faster, reducing wear during cold starts and improving fuel economy.
• High-Temperature Resistance: Constructed with a durable wax element and corrosion-resistant materials to withstand the extreme temperatures and pressures inside a heavy-duty diesel engine.
• Rigorous Quality Testing: Each unit undergoes a machinery test report and video outgoing inspection to confirm opening temperature and stroke accuracy before shipment.
• Versatile Application: Commonly used in Komatsu equipment for construction, mining, and agriculture, including excavators, loaders, bulldozers, and trucks.
• Reliable Warranty: Backed by a 6-month warranty, providing peace of mind for your repair or maintenance project.

Technical Specifications

OEM Cross-Reference

This thermostat is a direct replacement for the following OEM part numbers:

• Komatsu: 5256423

If your engine uses a different part number, please contact us with your engine serial number for cross-referencing assistance.

Compatibility

This thermostat is specifically designed for the Komatsu 6D107 diesel engine. It is commonly used for the following types of heavy equipment:

• Excavators
• Loaders
• Bulldozers
• Forklifts
• Trucks
• Buses

Note: Always verify your engine model and part number before purchasing to ensure correct fitment.

Global Supply & Distribution

We maintain strong export capabilities to serve the global aftermarket. Our distribution network supports fast and reliable shipping to major industrial markets, including:

• North America: USA, Canada, Mexico
• Europe: Germany, UK, France, Netherlands, Poland
• Asia-Pacific: Japan, South Korea, Australia, Indonesia, Singapore
• Middle East & Africa: UAE, Saudi Arabia, South Africa, Kenya
• South America: Brazil, Chile, Peru, Argentina

We offer flexible shipping options via sea, air, or express courier (DHL, FedEx, UPS) to meet your delivery deadlines, whether you are a local repair shop or a large-scale distributor.

Quality Assurance

We prioritize quality and reliability in every component we supply. Our manufacturing process adheres to strict international standards for diesel engine parts.

• Certification: Products are manufactured in an ISO-compliant facility.
• Testing: Each batch is subject to a Machinery Test Report to verify operational performance. Video Outgoing Inspection is available upon request to confirm part quality before shipping.
• Warranty: We provide a solid 6-month warranty against manufacturing defects from the date of purchase.

FAQ

Q: How do I know if this thermostat will fit my Komatsu engine?
A: This thermostat is designed for the Komatsu 6D107 engine. The best way to confirm fitment is to check your old part for the number “5256423”. If the number matches, it is a direct replacement. If you are unsure, please provide us with your engine model and serial number so we can verify compatibility.

Q: What is the recommended installation procedure?
A: Installation is straightforward for a qualified mechanic. First, drain the coolant below the thermostat housing level. Remove the housing bolts, replace the old gasket and thermostat, and reinstall the housing. Ensure the new thermostat is oriented correctly (the spring side typically faces the engine). Refill with fresh coolant and bleed the system of air before running the engine.

Q: How often should the thermostat be replaced on a 6D107 engine?
A: It is good practice to replace the thermostat whenever the cooling system is serviced or if you notice the engine is running too cool (poor heater performance, low fuel economy) or overheating. For preventative maintenance, replacing the thermostat every 2-3 years or 2,000-3,000 operating hours is recommended to ensure reliable cooling system performance.