Fan Motor 1/5 Hp, 115V– Replaces Century ORV4540 | NBK-20521

NBK-20521 – Fan Motor 1/5 HP 115V – NBK The NBK-20521 Fan Motor is a dependable OEM-equivalent replacement designed for RV air conditioning systems from Dometic, Duo Therm, and Century. Operating on 115V power with a 1/5 horsepower output, this motor delivers consistent airflow and reliable cooling performance. It is a direct replacement for the widely used Century ORV4540 fan motor and multiple compatible RV AC models. Built to meet or exceed OEM specifications, the NBK-20521 offers a precise drop-in fit, making it an ideal solution for RV owners and service technicians restoring proper air circulation. Key Features OEM-Compatible Replacement: Direct replacement for Century ORV4540 fan motor Reliable Airflow: 1/5 HP output supports efficient RV AC operation Durable Construction: Designed for continuous-duty use in RV air conditioning systems Direct-Fit Design: Matches OEM mounting and electrical specifications Specifications SKU: 20521 UPC: 810069181257 Category: AC Motor / RV Parts OEM Brand: AO Smith / Century Voltage: 115V Horsepower: 1/5 HP Application: RV air conditioner fan motor Equivalent To Century: ORV4540 Dometic: 3105054.005 Duo Therm: F42B34A61, F42C40A61, F42C61A61, F42E63A61 Why Choose the NBK-20521? The NBK-20521 is a trusted replacement fan motor for RV air conditioning systems. With OEM-level compatibility, dependable airflow, and durable construction, it helps restore proper cooling performance and extend the life of RV AC equipment.