Softub Spas Filter for Softubs Pre-2009 (4” Drain Cover) – Great Barrier 8555CA

Softub 8555CA Filter for Pre-2009 Softubs (4″ Drain Cover) – Great Barrier

This filter fits pre-2009 Softubs with a 4” drain cover and snap-on filter style (model 8555 / 8555CA).

Pro Tip: Most Softub owners keep a second filter on hand to rotate and extend filter life.

Not sure? Contact us or send a photo — we’ll confirm before you order.

If you own an older Softub, finding the correct replacement filter can be confusing — especially since many original parts are no longer supported.

This Great Barrier 8555CA snap-on filter is specifically designed for Softubs with approximately a 4-inch drain cover, commonly found on older models.

Unlike older threaded filters, this model slides over and seals around the drain cap, creating a secure fit without threading.

This is the 4” snap-on filter (8555). If your Softub uses a 5” drain cover or a threaded filter, this is NOT the correct part.

How to Identify Your Softub Filter

• 4” drain cover → 8555 (this filter)
• 5” drain cover → 5020 (different filter)
• Threaded filter → NOT compatible

Great Barrier Microban Filtration

High temperatures and constant moisture create the perfect environment for bacteria growth inside spa filters.

Great Barrier Pleats are made with genuine Reemay Advantage media infused with Microban antimicrobial protection, helping to:

• Inhibit bacteria growth on the filter surface
• Reduce odors and staining
• Improve durability in hot water environments
• Extend the life of the filter

The result:
A cleaner, longer-lasting filter that stays fresher between cleanings.

Specifications

• Part Number: 8555CA
• UPC: 818357001577
• Outer Diameter: 6″
• Length: 7 3/4″
• Top: Closed
• Bottom: 4″ Slip Collar (Snap-On Style)
• Filtration Area: 35 sq. ft.

Compatibility

Fits:

• Pre-2009 Softubs
• Softubs with approximately 4” drain/suction cover
• Snap-on style filter systems

Does NOT fit:

• Threaded filter models
• Most 2009+ Softubs
• Softubs with approximately 5″ drain/suction covers

Cross Reference

• Filbur: N/A
• Unicel: N/A

Also known as Softub 8555 / 8555CA replacement filter.

Shipping & Availability

• ✔ In stock in the USA
• ✔ Ships fast
• ✔ Carefully packaged

Installation Tip

For easier installation, soak the filter collar in warm water before installing. This helps the slip collar fit more easily over the drain cover.

Frequently Asked Questions

Does this fit all Softubs?
No. This filter only fits select pre-2009 Softubs with an approximately 4″ drain cover and snap-on filter style.

Does this filter thread in?
No. This is a snap-on filter, not a threaded filter.

What if I’m not sure?
Send us a photo of your current filter area and we’ll help confirm fit before you order.

Also searched as: Softub 8555 filter, 8555CA, FC9911 replacement, pre-2009 Softub filter, 4 inch Softub filter