The upper hose that carries coolant from the engine to the radiator is an essential part of the engine cooling system, as it allows hot coolant to pass from the engine head to the radiator to be cooled.
Machine head face specifications:
- Country of Origin: Japan
- Product Brand: Mitsubishi
- Product Number: 1370A426
- Compatible models: Mitsubishi Lancer EX 1600 engine
⚙️ Main function:
- ✅ Heat transfer: Transports hot coolant to the radiator to dissipate heat.
- ✅ Maintaining engine temperature: It helps keep the engine at an ideal operating temperature.
- ✅ Leakproof: Designed to withstand high pressure and temperature without leakage.
- ✅ Vibration Resilience: Withstands engine movement and vibration without damage or breakage.
🧱 Material:
- Reinforced Rubber
- Sometimes it contains an inner fabric (Textile Braided Layer) to resist pressure and heat.
- Temperature tolerance up to +120°C or more
📍 Installation location:
- At the top of the engine, heading towards the top of the radiator.
- It is often connected to the thermostat or cylinder head at one end, and the radiator at the other.
🔧 Symptoms of upper hose damage:
Coolant leak.... Crack or damage in the hose
Engine overheating.... Poor coolant flow due to blockage or damage
Excessive softness or stiffness in the hose.................. Internal damage to the rubber material
The appearance of a bulge or crack... a sign that it is about to burst under pressure.
🛠️ Tips when replacing:
- It is recommended to replace the hose every 4-5 years or as per maintenance recommendations.
- Hose clamps should also be replaced to ensure a proper seal.
- The lower hose is also checked similarly.
- Check the coolant level and quality after installation.
📘 Technical information: The difference between the upper and lower hose
Upper hose .... Lower hose
Flow direction from engine to radiator .... Flow direction from radiator to water pump
Higher temperature .... Relatively lower temperature
The possibility of corrosion is higher due to high temperature. The possibility of corrosion is affected more by pressure.
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