Kubota D902 Engine Thermostat 82°C | OEM 15521-73010 Compatible

Product Details

Product Overview

This high-quality thermostat is specifically designed for the Kubota D902 diesel engine, ensuring optimal engine operating temperature at 82°C (179.6°F). As a critical component of the engine’s cooling system, this thermostat regulates coolant flow to maintain efficient combustion, reduce emissions, and prolong engine life. Suitable for global distribution, this part is a direct replacement for OEM number 15521-73010 and is stocked for rapid delivery to major markets including North America, Europe, and Asia-Pacific.

Key Features & Benefits

• Precision Temperature Control: Opens at 82°C to ensure the engine reaches and maintains its ideal operating temperature quickly, reducing cold-start wear and improving fuel efficiency.
• Durable Construction: Manufactured from high-grade stainless steel and engineered wax-pellet elements for reliable, long-term performance under extreme thermal cycling.
• Direct Fit Replacement: Matches OEM dimensions and specifications exactly, ensuring a hassle-free installation without the need for modifications.
• Enhanced Engine Protection: Prevents overheating and overcooling, which can lead to thermal stress, increased emissions, and reduced engine lifespan.
• Rigorous Quality Testing: Each thermostat is tested for opening temperature and flow characteristics to meet or exceed OEM standards.

Technical Specifications

OEM Cross-Reference

This thermostat is a direct cross-reference for the following OEM numbers, ensuring compatibility with genuine Kubota parts:

• Kubota: 15521-73010
• Alternative Part Numbers: 15521-73011, 15521-73012 (where applicable)

Compatibility

• Engine Models: Kubota D902 (specifically D902-E, D902-E2 series)
• Applications:
  • Kubota BX Series Sub-Compact Tractors (e.g., BX1860, BX2360, BX2660)
  • Kubota RTV400 / RTV500 Utility Vehicles
  • Kubota ZD Series Zero-Turn Mowers (e.g., ZD326)
  • Kubota KX Series Mini-Excavators (e.g., KX41-3)
  • Generators, welders, and other industrial equipment powered by the Kubota D902 engine

Global Supply & Distribution

We specialize in the global distribution of Kubota engine components, serving a diverse network of dealers, repair shops, and OEM distributors. Our logistics network ensures:

• Worldwide Shipping: Reliable courier and freight options to over 50 countries, including the USA, Canada, Germany, Australia, and Japan.
• Fast Delivery: Stock items shipped within 24 hours to major ports (e.g., Los Angeles, Rotterdam, Shanghai) and industrial hubs.
• Bulk & Wholesale Orders: Volume discounts available for commercial buyers and workshops.
• Trade Compliance: All products are packaged and documented for smooth customs clearance (HS Code 8483.40).

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001:2015 certified facilities with strict quality control.
• Testing: Each thermostat undergoes a functional test to verify the opening temperature (82°C ± 2°C) and valve lift.
• Warranty: Backed by a 12-month warranty against manufacturing defects.

FAQ

1. Is this thermostat a direct replacement for my Kubota D902 engine?
Yes, this thermostat (OEM 15521-73010) is a direct drop-in replacement for the Kubota D902 engine. It matches the factory dimensions and opening temperature of 82°C. Always ensure your engine model is D902 (check the engine data plate) and that the gasket surface is clean before installation.

2. What happens if I install a thermostat with a different temperature rating (e.g., 71°C or 88°C)?
Using an incorrect temperature rating can cause the engine to run too cold or too hot. A 71°C thermostat may prevent the engine from reaching optimal operating temperature, leading to increased fuel consumption and carbon buildup. An 88°C thermostat may cause overheating, especially in warmer climates. Always use the specified 82°C thermostat for the D902 engine to maintain proper thermal management.

3. How do I test if my old thermostat is faulty?
To test the thermostat, remove it from the engine and place it in a pot of water with a thermometer. Heat the water slowly. The thermostat should begin to open around 80°C and be fully open by 82-85°C. If it remains closed at 90°C or fails to close after cooling, it is faulty and requires replacement. We recommend replacing the thermostat and gasket together as a maintenance set every 1000 operating hours.