- Important part of cooling system
- The hose coolant travels through to get between the radiator and engine
- Replace when cracked or leaking
Your Nissan depends on its cooling system to prevent the engine from overheating. And the cooling system depends on a functioning, quality Radiator Coolant Hose (Upper) to operate properly. As the coolant fluid in your Nissan passes through the radiator and coolant system to your engine, it passes through a Radiator Coolant Hose (Upper). It's crucial that your Radiator Coolant Hose (Upper) is free from cracks, bloating, or leaks that could cause more damage to your Nissan.
Eventually, the rubber in the Radiator Coolant Hose (Upper) on your Nissan can get old and wear out. If this happens, the Radiator Coolant Hose (Upper) may become brittle and crack, causing coolant to leak out. If an excess amount of coolant leaks out, the engine may not get enough coolant to keep the engine temperature under control, which could cause your Nissan to overheat. If overheating occurs, it could lead to added repairs and further damage to your vehicle.
Also, your Radiator Coolant Hose (Upper) can become bloated, meaning the hose swells. If low coolant causes the engine to overheat, it 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 vehicle's Radiator Coolant Hose (Upper).
If you think a Radiator Coolant Hose (Upper) on your Nissan needs to be replaced, a visual inspection is often a good place to start. When dealing with 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 something happens to the Radiator Coolant Hose (Upper).
When looking at the Radiator Coolant Hose (Upper), look for swelling, cracks, dry-rot, and warping. Look for coolant leaks on the ground underneath the vehicle, specifically underneath where the Radiator Coolant Hose (Upper) is located on the vehicle.
In addition, look at your dashboard if you suspect a bad Radiator Coolant Hose (Upper). Look for a Low Coolant light or if the temperature gauge is in the red, meaning your engine is running too hot. Your owner's manual provides an overview of the different dashboard lights and their meanings.
Is your Nissan in need of a new Radiator Coolant Hose (Upper)? Order a genuine replacement Cooling System Radiator Coolant Hose (Upper) for your Nissan Frontier. See the What This Fits tab for more details.
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