Waterdrop WD-KJF Replacement Filter | 5-in-1 RO Cartridge for K6 System (12-Month Lifespan)

Premium Replacement Filter for Your K6 Instant Hot Water RO System

The Waterdrop WD-KJF Filter is specifically made for the K6™ Reverse Osmosis Instant Hot Water Dispenser (model K6-W and KJ-600). Upgrade today to maintain clean, great-tasting water—and protect your system’s performance.

Why You Need the WD-KJF Filter

• 5-in-1 Deep Filtration: Integrates PP cotton, activated carbon, and an RO membrane (0.0001 µm) to remove TDS, heavy metals, fluoride, PFAS, chromium, organic matter, and more. 
• Zero Limescale: The advanced RO membrane plus carbon block prevent limescale buildup—protecting your heating module and extending lifespan. 
• Long-Lasting Performance: Enjoy up to 12 months or approximately 1,600 gallons of cleaner water. 
• 3-Second Twist-to-Replace: Hassle-free replacement—no tools needed, no plumber required. 

Product Specifications

• Model: WD-KJF Replacement Filter
• Compatible With: Waterdrop K6-W & KJ-600 Instant Hot Water RO Systems
• Filter Life: 12 Months or ~1,600 Gallons
• Dimensions: 16.7 × 6.3 × 6.3 inches
• Weight: 6.17 lb

Keep your Waterdrop K6 system delivering hot, pure water—replace with a WD-KJF cartridge and restore performance, taste, and safety today.