Waterway 45 Spa Filter Cartridge (WY45) – Suits Sapphire, Signature & Oasis Spas

💧 Waterway 45 Spa Filter Cartridge (WY45)

Keep your spa water crystal clear with this high-quality Waterway 45 replacement filter cartridge, designed to suit a wide range of popular spa models including Sapphire, Signature and Oasis systems.

Manufactured using premium Reemay spun-bond polyester, this cartridge delivers superior filtration performance, capturing fine debris while maintaining strong water flow.

✅ Key Features

• Premium Reemay filter media – durable, long-lasting & high-performance
• Captures finer particles for cleaner, clearer water
• Strong continuous filament construction (won’t fray or unravel)
• Easy to clean and reusable
• Suitable for both spa and pool filtration systems

Compatible With:
- Waterway WY45
- Signature SG50
- PWW50 / PCS650
- Sapphire Spas
- Oasis Spas

📏 Specifications

• Length: approx. 204–205mm
• Diameter: approx. 145–150mm
• Top: Semi-circle handle
• Bottom: 49mm coarse thread (SAE)
  

🔁 Compatible With

This filter replaces or suits:

• Waterway WY45
• Signature SG50
• Sapphire Spas
• Oasis Spas
• PWW50 / WW50S / PCS650
• Multiple equivalent aftermarket codes

⚠️ Before You Buy

Always check:

• Length (~204mm)
• Diameter (~150mm)
• Coarse thread connection

⚠️ Important:
This filter uses a 49mm coarse thread.
Always check your existing filter before ordering.

💡 Why Choose This Filter?

This generic replacement offers OEM-level performance at a better price, using proven filtration media trusted across the pool and spa industry.

Related Searches

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Generic, Non-Genuine
Manufactured with USA-made Reemay Quality Filtration Media.



Reemay is made of continuous filaments and does not weave out. It is thicker, heavier and sturdier making it better at capturing smaller particles.