WRIARICH New CPU Cooling Fan Replacement for ASUS ZenBook UX431 BX431 UM431 U4500F S4500F S431 Series, Fan Model DFS5K121154915 FLCB

This brand-new CPU cooling fan is a direct aftermarket replacement for worn, noisy or broken original cooling fans of ASUS ZenBook slim laptops. Precisely manufactured matching fan model DFS5K121154915 with FLCB marking, it fits UX431, BX431, UM431, U4500F, S4500F and S431 full variant models without trimming or modification.

Equipped with high-quality silent brushless motor, the fan generates consistent cooling airflow to quickly draw away CPU heat. It effectively resolves typical laptop cooling faults such as grinding rattling noise, high-temperature performance lag, automatic shutdown and frame drops during browsing, document editing and light creative work.

All mounting positions, fixed brackets and power connection cables are consistent with factory original standards, enabling simple self-repair without extra adapters or professional tools. Built-in shock absorption design suppresses vibration and running noise, and strengthened fan blades improve durability for continuous daily use.

It is an affordable DIY repair part to restore your thin and light ZenBooks original heat dissipation efficiency, helping you avoid costly official maintenance and extend your laptops service life.