Cabin Heater Inlet Coolant Hose 🔧

This inlet hose is a small but very important part of the engine cooling and cabin heating system. It carries hot coolant from the engine side to the heater core, allowing warm air to enter the cabin when the heater is switched on. A good hose also helps keep coolant flow stable, which supports correct engine temperature.

Why This Part Is Needed ✅

Without a strong heater inlet hose, coolant cannot move properly to the heater core. The part is made to handle heat, pressure, vibration, and coolant chemicals. Replacing an old, swollen, cracked, or leaking hose prevents coolant loss and protects the engine from overheating.

How It Works ⚙️

When the engine warms up, coolant circulates through the cooling system. This hose guides hot coolant into the heater core. The blower fan then pushes air through the heated core, giving warm air inside the vehicle. The hose must seal tightly at both ends to keep pressure in the system.

What Happens If It Fails ⚠️

A damaged hose may cause coolant dripping, sweet smell, low coolant level, weak cabin heat, steam from the engine bay, or engine overheating. If ignored, it can lead to heater core problems, head gasket damage, or serious engine repair costs.

Compatible Models

• Q50
• 370Z
• Fuga Hybrid
• Q70/M
• Fuga
• Q70/M Hybrid
• Cima
• Skyline Crossover
• Firelady Z
• Skyline
• Q70