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

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

In time, the rubber in your vehicle's Radiator Coolant Hose (Upper) can wear out. When this occurs, the Radiator Coolant Hose (Upper) may become brittle and crack, causing coolant to leak out. If enough coolant leaks out, the engine may not get enough coolant to keep the engine temperature under control, which could cause your Nissan to overheat. An overheated engine could lead to additional repairs and even damage to the vehicle.

In addition, your Radiator Coolant Hose (Upper) can become bloated, meaning the hose swells. An overheating engine due to low coolant may cause extremely hot coolant to travel through the Radiator Coolant Hose (Upper), which can make the rubber swell and bloat, possibly causing additional cracks and damage to your Radiator Coolant Hose (Upper).

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

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

In addition, look on your dashboard if you think your Radiator Coolant Hose (Upper) is bad. 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 dashboard lights and their meanings.

Is it time to replace the Radiator Coolant Hose (Upper) on your Nissan? Order a genuine replacement Cooling System Radiator Coolant Hose (Upper) for your Nissan Frontier or Nissan Xterra. See the What This Fits tab for more details.

Fits Frontier, Xterra