Hose Bottom.
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 relies on the cooling system to prevent the engine from overheating. And the cooling system depends on a functioning, quality Radiator Coolant Hose (Lower) to operate properly. As the coolant in your INFINITI passes through the radiator and coolant system to your engine, it passes through a Radiator Coolant Hose (Lower). It's crucial that your Radiator Coolant Hose (Lower) is free from damage, leaks, cracks, or bloating that may cause further damage to your vehicle.

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

Also, your Radiator Coolant Hose (Lower) can become bloated, meaning the hose bulges out or swells in some places. If low coolant causes the engine to overheat, it could cause intensely heated coolant to pass through the hose, making the rubber in the hose bloat and swell, likely causing additional damage and cracks to the Radiator Coolant Hose (Lower).

If you think your INFINITI's Radiator Coolant Hose (Lower) needs to be exchanged, a great place to start is a visual inspection. When dealing with the coolant system, always make sure the engine and coolant system are completely cool, as the cooling system is pressurized, and extremely hot coolant fluid can spray if the Radiator Coolant Hose (Lower) becomes compromised.

When looking at the Radiator Coolant Hose (Lower), look for dry-rot, cracks, swelling, or warping. Look for coolant leaks on the ground underneath the vehicle, especially where your Radiator Coolant Hose (Lower) is attached to the vehicle.

Also, look at your dashboard if you suspect a bad Radiator Coolant Hose (Lower). Check to see if the Low Coolant light is on or if the temperature gauge is in the red, meaning your engine is running too hot. Your INFINITI owner's manual gives an overview of dashboard lights and their meanings.

Is it time to replace your INFINITI's Radiator Coolant Hose (Lower)? Order a genuine replacement Cooling System Radiator Coolant Hose (Lower) for your INFINITI QX4. See the What This Fits tab for more details.

Fits QX4