Lower radiator coolant hose for Nissan/Infiniti

Why you need it

This molded coolant line keeps your engine at a safe temperature by carrying chilled antifreeze from the radiator outlet to the water pump. A healthy hose protects the head gasket, maintains heater performance, and prevents power loss. Built to handle heat, pressure, and vibration, it seals tightly at both ends to stop leaks and keeps the cooling system efficient mile after mile.

How it works

When the thermostat opens, coolant leaves the bottom of the radiator and flows through this hose into the pump, then back through the engine. Quality EPDM rubber with fabric reinforcement resists swelling, ozone, and electrochemical degradation. Its molded curves avoid kinks, and the wall strength prevents vacuum collapse during cooldown or high RPM pulls. Proper clamps lock it in place for a leak-free circuit.

What if it fails

Cracks, soft spots, oil-soaked rubber, or bulges lead to leaks, steam, and rapid overheating. You may see low coolant, temp spikes, weak cabin heat, or the hose collapsing under load—risking warped heads and tow bills.

Tech notes

Replace old clamps, clean necks, seat fully, torque evenly, refill with spec coolant, and bleed air.

Compatibility

• Q40/G Sedan
• Qx50/Ex
• Q60/G Coupe
• Q60/G Convertible
• G37 Sedan