- 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 ensure your vehicle doesn't overheat. And your vehicle's cooling system relies on a functioning, quality Radiator Coolant Hose (Upper) to operate properly. As the coolant in your Nissan travels through the coolant system and radiator to the engine, it has to go through a Radiator Coolant Hose (Upper). It's important your Radiator Coolant Hose (Upper) is free from cracks, bloating, or leaks that could cause more damage to your Nissan.
In time, the rubber that makes your Nissan's Radiator Coolant Hose (Upper) can wear out. When this happens, the Radiator Coolant Hose (Upper) may become brittle and crack, allowing coolant to leak out. If too much coolant leaks out, the engine might not receive enough coolant to keep the engine temperature under control, which could cause your Nissan to overheat. If overheating occurs, it could lead to additional repairs and even damage to the vehicle.
Also, your Radiator Coolant Hose (Upper) can become bloated, meaning the hose swells. An engine overheating from low coolant could cause intensely heated coolant to pass through the hose, which can make the rubber swell and bloat, likely causing additional damage and cracks to your Radiator Coolant Hose (Upper).
If you believe the Radiator Coolant Hose (Upper) on your vehicle needs to be exchanged, a visual inspection is often a good place to start. When dealing with the coolant system, always ensure the coolant system and engine are completely cool, as the cooling system is pressurized, and extremely hot coolant fluid can spray if something happens to the Radiator Coolant Hose (Upper).
When inspecting your Radiator Coolant Hose (Upper), look for dry-rot, cracks, swelling, or warping. Check the ground underneath the vehicle for coolant leaks, specifically underneath where the Radiator Coolant Hose (Upper) is located on the vehicle.
Additionally, look at your dashboard if you suspect a bad Radiator Coolant Hose (Upper). Check if the Low Coolant light is illuminated or if the temperature gauge is in the red, meaning your engine is running too hot. Your owner's manual gives an overview of dashboard lights and their meanings.
Is it time to replace your Nissan's Radiator Coolant Hose (Upper)? Order a genuine replacement Cooling System Radiator Coolant Hose (Upper) for your Nissan Cube. See the What This Fits tab for more details.
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