Stop fighting a noisy, weak, or dead bathroom exhaust fan. The NBK Parts 20998K is a purpose-built direct replacement for the Broan NuTone S97017705 motor assembly. It ships complete with the motor, blower wheel, and mounting bracket -- everything you need to restore full 100 CFM ventilation with a single swap and minimal tools.
The original Broan NuTone S97017705 motor assembly is a common failure point in a wide range of NuTone bath fan models. Bearings wear, blower wheels crack, and motors burn out over time -- especially in humid, high-cycle environments. The NBK 20998K matches the OEM form, fit, and function, so you get the same 100 CFM airflow the fan was rated for when it was new.
Unlike generic universal motors that require fabrication or adapter work, this assembly drops into the original housing using the existing mounting points. The 9" x 9" bracket aligns to the factory footprint, and the 5-5/8" diameter blower wheel fits the original scroll housing without modification.
Includes motor, blower wheel (5-5/8" dia. x 2" H), and 9" x 9" mounting bracket. No sourcing separate parts.
Delivers 100 CFM airflow -- same as the original S97017705 -- preventing moisture buildup and mold risk.
Fits 10+ Broan NuTone fan models in the 8663 and VL3668 series. Check the compatibility list before ordering.
Backed by a limited 2-year manufacturer warranty from NBK Parts for peace of mind after installation.
This motor assembly is confirmed compatible with the following Broan NuTone bathroom exhaust fan models:
Replacement is straightforward for a competent DIYer with basic hand tools. The general process follows standard NuTone motor swap procedure: