长城哈弗 H3/H5 风骏3 节温器 1306100-E02 30202 原厂级控温性能

If your vehicle shows engine coolant temperature staying low for long, slow heat-up of warm air, or the temperature gauge fluctuates abnormally, the thermostat is likely aging and stuck in the open position, causing coolant to circulate in the long loop. A functioning thermostat adjusts coolant flow based on temperature to help the engine quickly reach and maintain optimal operating temperature (about 85–95°C), improving fuel economy and power. OEM number 1306100-E02; fits Great Wall/Haval H3, H5, and Wind series 3 models; part number 30202/B54GC-82; uses OEM-grade temperature control; ensure accurate response. Installation notes: perform with a cold engine; replace gasket; bleed cooling system and verify thermostat opening temperature meets OEM standards.