Sundance Spas MicroClean Ultra Inner Core Filter 6473-164S

The 6473-164S Inner Core Filter is a critical component of the MicroClean® Ultra Filtration System used in select Sundance® Spas. Designed exclusively for use with the MicroClean® Ultra Outer Filter (sold separately), this inner core filter adds a second stage of filtration, helping trap ultra-fine particles that other filters might miss.

Crafted with a dense polyester media, the inner core captures impurities like body oils, debris, and microscopic contaminants—ensuring your hot tub water stays clean, clear, and safe. This two-stage filtration system is an essential part of Sundance’s advanced water care technology, delivering improved performance and longer-lasting cleanliness with minimal effort.

Replace regularly as part of your spa’s maintenance routine to maintain optimal filtration and extend the life of your spa components.

Key Benefits:

• OEM part for Sundance® Spas using MicroClean® Ultra filters

• Acts as Stage 2 filtration in a two-part system

• Captures ultra-fine particles and impurities

• Made with high-density polyester for superior filtration

• For use with compatible Sundance® spa models only

• Helps reduce sanitizer demand and extend water clarity

We want you to be completely satisfied with your purchase. If for any reason you need to return an item, please review our policy below:

• Returns are accepted on unopened, unused items in their original packaging.

• Items must be returned within 30 days of purchase.

• Customers are responsible for return shipping costs.

• Once the returned item is received and inspected, a refund will be issued to the original payment method within 5–7 business days.

• Opened or used items cannot be returned.

To initiate a return, please contact us at 970-259-0468 with your order number.

All orders are processed and shipped within 2 business days via standard ground shipping. Free local delivery is available for residents within the Durango, CO area—qualifying zip codes will automatically receive this option at checkout. Shipping rates are calculated at checkout based on order weight.