Upper Engine Coolant Hose (Radiator to Engine)

This upper coolant hose is a key link in the cooling system. It carries hot coolant from the engine outlet to the radiator, where heat is released to the air ?️. When the engine works hard, coolant temperature rises fast—this hose must stay strong, flexible, and leak-free to keep the temperature stable.

Why this part is needed

The cooling system depends on sealed pressure. This hose helps maintain correct coolant flow and system pressure so the thermostat and radiator can do their job efficiently.

How it works

As the water pump circulates coolant, the hose handles heat, vibration, and pressure pulses. Reinforced rubber walls resist swelling, while shaped bends prevent kinks and keep steady flow ✅.

What happens if it’s damaged

A cracked or soft hose can leak or burst, causing coolant loss, overheating, weak cabin heat, and possible head gasket or engine damage ?. You may notice sweet coolant smell, steam, or a collapsing hose after shutdown.

Compatibility

• Truck
• Np300
• King Cab
• Datsun Truck
• Np300 F/Sbs,Med