Hot Tub Things® Inner Filter – Compatible with Sundance® 6473-164S
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Key Features & Benefits
Perfect Fit Guaranteed
Designed specifically for Sundance® spas requiring part 6473-164S
Superior Filtration
Engineered for seamless compatibility with original mounting points for secure placement.Captures fine particles and debris for sparkling clean water
Durable Construction
Made from premium filter media that resists chemicals, UV exposure, and wear
Easy Installation
Drop-in replacement—no tools or modifications required
Extended Lifespan
Durable construction withstands harsh spa chemicals and high temperatures
Made in USA:
Quality-tested to ensure reliability and performance
Product Overview
The Sundance® 6473-164S inner filter is a critical component of your spa's filtration system. It works alongside your outer filter to trap fine particles, oils, and debris that can cloud your water and strain your pump. This genuine replacement filter is engineered to meet or exceed OEM specifications, ensuring optimal performance and longevity.
Whether you're a longtime Sundance® spa owner or new to hot tub maintenance, replacing your inner filter regularly is essential for maintaining water clarity, reducing chemical usage, and protecting your spa equipment from premature wear.
Frequently Asked Questions
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No. It is non-washable and recommended for replacement every 3–6 months.
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Compatible with Sundance® 850 and 880 Series (2005–2023), including major models like Altamar, Capri, Cameo, Maxxus, Optima, and more.
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Yes—the inner filter works as part of a two-stage MicroClean® Ultra system and requires the outer filter (6473-165S) for optimal performance.
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This inner filter measures approximately 4-1/4 inches in diameter by 18-3/4 inches long. It's designed to pair with outer filter 6473-165S as the complete 6541-397 filter assembly, and cross-references to Filbur FC-2769.
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No — this filter is designed for the legacy MicroClean Ultra system used on 850 and 880 Series spas built before the January 2024 redesign. If your spa is a 2024 or newer 880 Series model, you'll need the updated MicroClean Ultra II filter set (6473-452S outer / 6473-453S inner) instead.
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