Front Heater Coolant Hose (Cabin Heating Line) ?

This coolant hose is a key link between the engine’s cooling circuit and the heater core inside the dashboard. It is needed to send hot coolant forward so your cabin heater can produce warm air and help clear the windshield fast in cold or wet weather. ✅

How it works

When the engine warms up, coolant flows through this hose under pressure. The hot coolant passes into the heater core, the blower pushes air across it, and you get steady heat inside the cabin. The hose is built to handle heat cycles, vibration, and chemical exposure from coolant.

If it fails

A cracked or soft hose can leak coolant, causing:

• Loss of cabin heat ?️
• Coolant smell, steam, or wetness near the front area
• Engine overheating risk and warning lights ?
• Air pockets in the cooling system, poor circulation

Driving with a leak can quickly lead to overheating and expensive engine damage, so replacement should be done as soon as symptoms appear.

Compatibility

• 370Z
• Q50
• Q70/M
• Fuga Hybrid
• Q60/G Coupe
• Skyline Coupe
• Q40/G Sedan
• Firelady Z
• Skyline
• Q60/G Convertible
• Q70/M Hybrid
• Fuga
• Skyline Crossover
• Cima
• Q70