21501AL500 Nissan HOSE-TOP, Price: 11.78$, Weight: 0.16kg

Upper Cooling Hose for Nissan Engine Bay

This upper coolant hose is a key link between the engine and radiator, carrying hot coolant out of the engine so temperatures stay stable. When the motor heats up, coolant pressure rises and this hose must flex, seal tight, and resist heat without collapsing. A good hose keeps proper flow, supports thermostat operation, and prevents air pockets that can trigger overheating.

Why this part is needed ✅

Engines rely on a closed cooling circuit. This hose routes coolant at the highest section of the system, where heat and pressure are strongest. It’s built with reinforced rubber to handle vibration, temperature swings, and chemical exposure from antifreeze.

How it works ⚙️

Coolant exits the engine, travels through this hose to the radiator, then returns cooled fluid back into circulation. Tight clamps and formed bends keep flow smooth and prevent kinks during acceleration or engine movement.

If the hose is damaged

Cracks, soft spots, or swelling can cause leaks, low coolant, steam, and fast overheating. Continued driving may lead to warped heads, blown head gasket, and costly repairs. Replace at the first sign of seepage or bulging.

Compatible Models

• G35