Hose Top.
Flexible hose that is part of the engine cooling system.

• Important part of cooling system
• The hose coolant travels through to get between the radiator and engine
• Replace when cracked or leaking

Your INFINITI's cooling system is designed to keep the vehicle from overheating. And your vehicle's cooling system relies on a functioning, quality Radiator Coolant Hose (Upper) to work properly. As your vehicle's coolant fluid travels through the coolant system and radiator to the engine, it travels through a Radiator Coolant Hose (Upper). It's important your Radiator Coolant Hose (Upper) is free from damage, leaks, cracks, or bloating that could cause damage to your INFINITI.

In time, the rubber that makes up your vehicle's Radiator Coolant Hose (Upper) can wear out. When this occurs, your Radiator Coolant Hose (Upper) can get brittle and crack, causing a coolant leak. If an excess amount of coolant leaks out, the engine may not get enough coolant to control the engine's temperature, potentially causing your INFINITI to overheat. An overheated engine could lead to additional repairs and even damage to the vehicle.

Additionally, your Radiator Coolant Hose (Upper) can become bloated, which means the hose swells up. If low coolant causes the engine to overheat, it can cause superheated coolant to pass through the Radiator Coolant Hose (Upper), causing the rubber material to swell and bloat, potentially causing further cracks and damage to your vehicle's Radiator Coolant Hose (Upper).

If you think your INFINITI's Radiator Coolant Hose (Upper) needs replacing, a great place to start is a visual inspection. When checking the coolant system, always ensure the vehicle's engine and coolant system are cooled down completely, as the entire cooling system is pressurized, and extremely hot coolant fluid can spray if the Radiator Coolant Hose (Upper) breaks.

When inspecting your Radiator Coolant Hose (Upper), look for dry-rot, cracks, swelling, or warping. Check for coolant fluid leaks underneath the vehicle, especially where your Radiator Coolant Hose (Upper) is attached to the vehicle.

Also, check the dashboard if you feel you have a bad Radiator Coolant Hose (Upper). Look for a Low Coolant light or if the temperature gauge is showing the engine running too hot. Your owner's manual provides an overview of the different dashboard lights and their meanings.

Is your INFINITI in need of a new Radiator Coolant Hose (Upper)? Order a genuine replacement Cooling System Radiator Coolant Hose (Upper) for your INFINITI FX35. See the What This Fits tab for more details.

Fits FX35, FX45