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Bestway OEM 58323 spa filter (Type VI)
Bestway Lay-Z-Spa and SaluSpa inflatable hot tubs
Replacement numbers
Bestway Type VI
Fits Bestway OEM 58323, 58323E.
Diameter 4.2" (107 mm)Length 3.1" (79 mm)8 models listedSearch this part on Amazon
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| Unicel | not listed in Unicel 2026 guide |
|---|---|
| Pleatco | not found in source |
| Filbur | not found in Filbur catalog |
| Top | not listed |
| Bottom | not listed |
Bottom: not listed
Drawn to scale from the listed diameter and length. Handles, threads and closed ends are drawn as symbols, not to scale.
For Bestway, Type VI cartridge (Bestway 58323) sits in Bestway Lay-Z-Spa and SaluSpa inflatable hot tubs. The cross-reference prints OEM 58323, 58323E. 4.2" across, 3.1" long, no square-foot figure.
Catalog note for 58323: Bestway's US site gives the Type VI cartridge as Ø4.2" x 3.1" for its SaluSpa line, and the Lay-Z-Spa UK site sells the same Type VI cartridge as compatible with all Lay-Z-Spa hot tubs except the Monte Carlo, which takes its own rigid-spa cartridge. Neither Bestway page prints the part number; the Home Depot listing for the Bestway two-pack names it as 58323E-BW (4.2" x 4.2" x 3.1"). The Unicel, Pleatco and Filbur catalogs do not list a Bestway Type VI equivalent, and no source gives an end-cap opening size or a sq ft rating. Bestway's own documents use other numbers for the same Type VI cartridge: 58239 (VI) in the 2013 Lay-Z-Spa manual, and item 60311 (10.6 x 8.0 cm, two per pack) in the 2021 and 2025 Lay-Z-Spa catalogs, sold today as BW60311 (Lay-Z-Spa UK) and 60311E (Bestway USA). The Monte Carlo cartridge is BWA0024, and the 2011 manual for the older #54075 and #54090 tubs lists a different cartridge, 58094.
Hot tubs named for 58323: Lay-Z-Spa Vegas #54112 and Monaco #54113, years 2013, listed by Bestway owner’s manual (printed as 58239 (VI), in filter set P6600); Lay-Z-Spa AirJet: St. Lucia, Miami, Bahamas, Cancun, Tahiti, Ibiza, Honolulu, Hawaii, St. Moritz, Helsinki, years 2021, listed by Bestway Lay-Z-Spa catalog (item 60311); Lay-Z-Spa AirJet Plus: Milan, Vancouver; HydroJet Pro: Hawaii, Maldives, years 2021, listed by Bestway Lay-Z-Spa catalog (item 60311); Lay-Z-Spa Miami AirJet 4/6, Hollywood Luxe AirJet 6, Hawaii/Bali/Rome Smart AirJet 6 and 7, years 2025, listed by Bestway Lay-Z-Spa catalog (item 60311); Lay-Z-Spa Dominica and Cabo Smart HydroJet 6; Santorini, Maldives, San Francisco Smart HydroJet Pro 7, years 2025, listed by Bestway Lay-Z-Spa catalog (item 60311); Lay-Z-Spa Carrara Smart AirJet 6 and Toronto Smart AirJet 7 (ThermaCore), years 2025, listed by Bestway Lay-Z-Spa catalog (item 60311); Lay-Z-Spa hot tubs (all models except Monte Carlo), no year range printed, listed by Lay-Z-Spa UK (Bestway) product page; Bestway SaluSpa inflatable hot tubs, no year range printed, listed by Bestway USA product page (Bestway USA: “Bestway's line of SaluSpas”).
Unicel and Pleatco and Filbur do not have a number on this row. Search 58323 or the Bestway part you pulled out of the spa.
Left blank on purpose: no Unicel, Pleatco or Filbur equivalent; no end-cap opening size or sq ft rating; 58323 itself appears only on retailer listings (Bestway's current number is 60311).
Where those figures are printed: Bestway USA (manufacturer product page) on 58323 (SaluSpa Type VI Filter Cartridge 2-pack: size Ø4.2” x 3.1”, for Bestway's line of SaluSpas). Lay-Z-Spa UK (Bestway brand site) on 58323 (Filter Cartridge VI: “Compatible with all Lay-Z-Spa hot tubs (Except Monte Carlo)”). Lay-Z-Spa UK (Bestway brand site) on 58323 (Separate rigid-spa filter cartridge sold for the Monte Carlo (no part number or size printed)). Home Depot listing for Bestway Type VI (retailer) on 58323 (Bestway Type VI SaluSpa filter cartridge 2-pack, model 2 x 58323E-BW; 4.2 in W x 4.2 in D x 3.1 in H). Bestway Lay-Z-Spa 2025 catalog (manufacturer) on 58323 (Technical Features & Accessory Compatibility matrix: Filter Cartridge (60311) for every model; 60311 10.6 cm x 8.0 cm / 4.2" x 3.1"). Bestway Lay-Z-Spa Collection 2021 catalog (manufacturer) on 58323 (box contents of all 14 models list filter cartridge (VI); spare 60311, 2 cartridges, 10.6 x 8.0 cm). Bestway Lay-Z-Spa owner’s manual 2013 (manufacturer) on 58323 (Vegas #54112 / Monaco #54113: 58239(VI) Filter Cartridge, P6600 Filter Set).
Hot tubs listed for this cartridge
The rest of the Bestway model list is the Bestway filter by model and year lookup.
| Model / system | Years | Listed by |
|---|---|---|
| Lay-Z-Spa Vegas #54112 and Monaco #54113 (printed as 58239 (VI), in filter set P6600) | 2013 | Bestway owner’s manual |
| Lay-Z-Spa AirJet: St. Lucia, Miami, Bahamas, Cancun, Tahiti, Ibiza, Honolulu, Hawaii, St. Moritz, Helsinki (item 60311) | 2021 | Bestway Lay-Z-Spa catalog |
| Lay-Z-Spa AirJet Plus: Milan, Vancouver; HydroJet Pro: Hawaii, Maldives (item 60311) | 2021 | Bestway Lay-Z-Spa catalog |
| Lay-Z-Spa Miami AirJet 4/6, Hollywood Luxe AirJet 6, Hawaii/Bali/Rome Smart AirJet 6 and 7 (item 60311) | 2025 | Bestway Lay-Z-Spa catalog |
| Lay-Z-Spa Dominica and Cabo Smart HydroJet 6; Santorini, Maldives, San Francisco Smart HydroJet Pro 7 (item 60311) | 2025 | Bestway Lay-Z-Spa catalog |
| Lay-Z-Spa Carrara Smart AirJet 6 and Toronto Smart AirJet 7 (ThermaCore) (item 60311) | 2025 | Bestway Lay-Z-Spa catalog |
| Lay-Z-Spa hot tubs (all models except Monte Carlo) | not given | Lay-Z-Spa UK (Bestway) product page |
| Bestway SaluSpa inflatable hot tubs (Bestway USA: “Bestway's line of SaluSpas”) | not given | Bestway USA product page |
Check the cartridge you removed
Measure diameter, length, and both ends, then compare them with the figures above. The steps are in the measuring guide. Why the bottom decides whether it seals: open-end vs threaded filters. Power, the retainer, and not running the spa empty: how to install a cartridge. Brand notes: Intex and Bestway filters. Number formats: how Filbur, Unicel and Pleatco numbers compare.
Every number on this row, on one screen: cross-reference lookup. Published clean and replace intervals for this cartridge, and a buy link for the numbers above: replacement schedule and reorder. The interval comparison by brand: calculator.
Cleaner and test strips
Hose rinse and soak steps are in how to clean a cartridge. Named cleaners and strips are in filter cleaners and test strips.
Filter cleaner and test strips
-
Leisure Time O Filter Clean Cartridge Cleaner Listing title: cartridge cleaner, 32 fl oz.
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SpaGuard Filter Cleaner Listing title: filter cleaner for spas and hot tubs, 1 quart.
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AquaChek SPA 6-in-1 Test Strips Listing title: reads total bromine, total chlorine, free chlorine, pH, total alkalinity and total hardness.
Search this part on Amazon Opens an Amazon search for this part number, not one listing we pre-checked.
Sources
- Bestway USA (manufacturer product page): SaluSpa Type VI Filter Cartridge 2-pack: size Ø4.2” x 3.1”, for Bestway's line of SaluSpas (web page)
- Lay-Z-Spa UK (Bestway brand site): Filter Cartridge VI: “Compatible with all Lay-Z-Spa hot tubs (Except Monte Carlo)” (web page)
- Lay-Z-Spa UK (Bestway brand site): Separate rigid-spa filter cartridge sold for the Monte Carlo (no part number or size printed) (web page)
- Home Depot listing for Bestway Type VI (retailer): Bestway Type VI SaluSpa filter cartridge 2-pack, model 2 x 58323E-BW; 4.2 in W x 4.2 in D x 3.1 in H (web page)
- Bestway Lay-Z-Spa 2025 catalog (manufacturer): Technical Features & Accessory Compatibility matrix: Filter Cartridge (60311) for every model; 60311 10.6 cm x 8.0 cm / 4.2" x 3.1" (PDF)
- Bestway Lay-Z-Spa Collection 2021 catalog (manufacturer): box contents of all 14 models list filter cartridge (VI); spare 60311, 2 cartridges, 10.6 x 8.0 cm (PDF)
- Bestway Lay-Z-Spa owner’s manual 2013 (manufacturer): Vegas #54112 / Monaco #54113: 58239(VI) Filter Cartridge, P6600 Filter Set (PDF)
Not in sources: no Unicel, Pleatco or Filbur equivalent; no end-cap opening size or sq ft rating; 58323 itself appears only on retailer listings (Bestway's current number is 60311).