Stop living with a dead or underperforming bathroom exhaust fan. The NBK Parts 21023K is a drop-in replacement motor assembly for the Broan NuTone S97017708 and several related model numbers, restoring full 90 CFM ventilation capacity without buying a whole new fan housing. The kit ships complete with motor, blower wheel, and mounting bracket -- everything you need for a straightforward swap.
Bathroom exhaust fans fail at the motor long before the housing or grille need replacement. Swapping just the motor assembly saves time, avoids drywall patching, and puts your fan back to original performance spec. The 21023K is purpose-built to match the Broan NuTone S97017708 motor assembly dimensionally and electrically, so it seats correctly in the existing housing with no modifications.
At 90 CFM, this assembly moves enough air to meet ASHRAE ventilation guidelines for bathrooms up to approximately 95 square feet. The single-speed, 1550 RPM motor runs on standard 120V household current and draws only 0.80 amps, keeping energy use low.
Includes motor, blower wheel (5-3/4 in. diameter), and mounting bracket -- no separate sourcing required.
Direct replacement for Broan NuTone S97017708. Also replaces model numbers 71731998, 7173-1998, 5KSM84DFK211AP, and 100600.
Restores full factory ventilation capacity, clearing moisture and odors from bathrooms up to 95 sq ft.
Backed by a limited 2-year manufacturer warranty from NBK Parts for peace of mind after installation.
The 21023K directly replaces the following Broan NuTone part numbers:
This motor assembly is designed specifically for Broan NuTone housings listed above. Verify your existing part number against the replacement list before purchase. It is not intended as a universal retrofit for other brands or housing styles.