Tier1 Pool Filter Cartridge Replacement for Hayward C500 — 19-5/8" x 7" High-Flow Trilobal Media

Tier1 Replacement for Hayward C500 is a high-flow, 19-5/8" x 7" pool filter cartridge engineered with trilobal media to capture more debris while maintaining steady water circulation.

If your pool pump struggles with cloudy water or the original cartridge is worn, this Tier1 replacement is built to restore filtration performance in systems that accept Hayward C500 and equivalent cartridges. Designed to match the key dimensions and pressure characteristics of common OEM parts, it drops into place and works with a variety of make/model listings so you don’t need a custom filter housing or adapter.

Which systems will this cartridge fit?

This Tier1 cartridge is made to be dimensionally compatible with Hayward Star Clear C500 and many comparable aftermarket and OEM part numbers, providing a direct swap in most compatible canister housings. Confirming the 19-5/8" length and 7" diameter is the fastest way to ensure fit.

• Compatible with Hayward C500/Star Clear and Hayward CX500-RE models
• Interchangeable with Filbur FC-1240, Pleatco PA50, Unicel C-7656 and others
• Matches common catalog numbers such as R173409, PLF50A, PPF50-4
• Ideal when your original cartridge measures approximately 19-5/8" by 7"

How does the trilobal media improve filtration?

The cartridge uses trilobal fibers rather than standard round filaments to boost mechanical capture of particles: that geometry increases surface area and creates more edges to trap debris without drastically increasing pressure. The result is clearer water with longer cleaning intervals.

• Trilobal dirt-lock media captures up to 40% more debris than round fibers
• Effective on leaves, hair, sand and fine particulate matter
• Maintains higher flow rates for consistent circulation
• Reduces frequency of cartridge replacement and manual cleaning

Will this cartridge affect pump or heater performance?

Tier1 engineered the internal core for high flow so circulation stays consistent without creating excessive backpressure that can stress pumps or hinder heater operation. Properly installed, it preserves normal system dynamics while delivering reliable filtration.

• Internal high-flow core supports steady water movement
• Designed to avoid undue restriction or pressure spikes
• Protects pump efficiency by minimizing flow loss over time
• Tested to NSF 50 protocols for predictable durability

How do I maintain and replace this filter cartridge?

Regular rinsing and periodic deep cleaning extend life and performance; replace the cartridge when pleats show permanent staining or damage. Follow manufacturer guidance for cleaning agents and avoid harsh scrubbing that can damage the media.

• Rinse with a garden hose after each heavy debris load
• Use a cartridge cleaner periodically for deep soil removal
• Inspect pleats and endcaps; replace if deformed or torn
• Expect service life to vary with pool conditions and maintenance

Who is this for: Pool owners and maintenance professionals seeking a reliable, affordable replacement for worn or obsolete Hayward C500-style cartridges will find this Tier1 unit a practical option. It suits residential pools, seasonal users, and anyone who needs a drop-in cartridge compatible with multiple OEM and aftermarket part numbers, offering improved debris capture without sacrificing flow or stressing pumps.