Description

This is a genuine Nissan coupling fan assembly (fan clutch) designed to regulate cooling fan speed based on engine temperature. It plays a crucial role in your vehicle’s cooling system by engaging and disengaging the radiator fan as needed, improving engine temperature control and fuel efficiency. Built to OEM specifications, this part ensures reliable cooling performance and long‑lasting durability.

---

📄 Key Features

• OEM Part Number: 210825X21D (also referenced as 21082‑5X21D)

• Part Type: Coupling‑Fan / Fan Clutch – cooling system component

• Condition: Brand new / direct replacement 

• Fitment Type: Direct OE replacement, simple bolt‑on installation

• Warranty: Backed by factory Nissan/Infiniti warranty where applicable

---

🚗 How It Works

The coupling fan (fan clutch) mounts between the engine’s water pump and cooling fan. It has a temperature‑controlled mechanism (viscous or electronic) that:
✔ Engages the fan when the engine runs hot to increase airflow through the radiator
✔ Disengages the fan when cooling demand is low to reduce load on the engine
This improves cooling efficiency and can enhance fuel economy and performance.