Thermostat

🔧 Linhai Thermostat Assembly

📦 Part Number: 22901 / 1BB-12411-00

⚙️ Thermostat · Temperature Control Valve · OEM Specification

📍 Installation Position: Engine Cooling System / Between Water Pump and Radiator

✅ Wax-Type Control · Automatic Regulation · Precise Temperature Control · Suitable for Multiple Linhai ATV/UTV Models

This product is a Linhai OEM specification thermostat assembly, part number 22901 / 1BB-12411-00. The thermostat is a critical component of the engine cooling system, installed between the water pump and radiator. It automatically controls the flow of coolant between small and large circulation loops based on coolant temperature, keeping the engine operating within the optimal temperature range. Manufactured with a wax-type temperature sensing element, the thermostat closes when coolant temperature is below the set point, allowing the coolant to circulate within the engine (small loop) for faster warm-up. When the temperature exceeds the set point, it opens to allow coolant flow through the radiator (large loop) to prevent overheating.

Over time, the thermostat may experience wax core aging, sticking, inaccurate opening temperature, or failure to close, leading to engine overheating or slow warm-up, affecting engine performance and longevity. Timely replacement of a damaged thermostat is critical to ensuring proper engine operation and extending service life.

• ✅ OEM Original Specification: Manufactured strictly to Linhai original technical standards. Opening temperature matches original parts completely.
• 🛡️ Wax-Type Temperature Control: High-quality wax-type sensing element for sensitive temperature response and reliable operation.
• 🔧 Precise Temperature Control: Ensures engine operates within optimal temperature range, improving fuel economy and power output.
• 💪 Corrosion Resistant Material: Housing made from corrosion-resistant materials with excellent sealing performance.
• 🔄 Direct Replacement: Directly replaces sticking, inaccurate, or damaged original thermostats.

✅ Typical Signs That Thermostat Replacement Is Needed:
• Engine overheating (overheat warning light illuminates).
• Engine warms up too slowly; coolant temperature remains low even after extended driving.
• Temperature gauge reading is erratic or unstable.
• Large temperature difference between upper and lower radiator hoses (upper hose hot, lower hose cold).
• Thermostat stuck in open or closed position.
If you experience any of these symptoms, please inspect and replace the thermostat promptly.

✅ Installation Tips:
1. Ensure the engine is completely cool before replacing the thermostat to avoid burns.
2. Drain some coolant until the level is below the thermostat mounting position.
3. Remove the thermostat housing cover, take out the old thermostat, and clean the mounting surface.
4. When installing the new thermostat, pay attention to orientation (spring side typically faces the engine) and ensure the seal is properly seated.
5. Tighten the housing cover bolts to OEM torque specifications and refill with coolant.
6. Start the engine, check for leaks, and verify proper thermostat operation (the upper radiator hose should become hot as the temperature reaches normal range).
Professional installation by a qualified technician is recommended.

⚠️ Important Notice: This product is a Linhai thermostat assembly, part number 22901 / 1BB-12411-00. Suitable for the Linhai ATV/UTV models listed above. Minor variations may exist between production batches. If your specific model is not listed, please contact us for compatibility verification. Images are for reference only; actual product may vary.