Short answer

If your Hoshizaki ice machine uses the common 4HC-H style cartridge, the replacement cartridge may be Hoshizaki H9655-11 for a single cartridge or Hoshizaki H9655-06 for a 6-pack. For some AM-50 series machines, the complete water filter head with cartridge is Hoshizaki H9320-51. For some larger KM series machines, the triple-head system is Hoshizaki H9320-53.

Do not order from this chart unless your model and current filter setup match. If your existing cartridge label is readable, use the cartridge number first. If it is not readable, verify through the model plate, serial number, Hoshizaki parts resources, or a qualified service technician.

Verified Hoshizaki water filter replacement chart

This chart includes only combinations that could be verified from Hoshizaki or Parts Town pages. It does not attempt to cover every Hoshizaki ice machine.

Hoshizaki filter part numbers explained

Hoshizaki H9655-11

Hoshizaki H9655-11 is a 4HC-H water filter cartridge. Parts Town describes it as a water filter cartridge that filters and traps debris and harmful contaminants in an ice maker. Parts Town also lists previous part numbers for H9655-11, including HOS9655-07H, HOS9655-08, HOS9656-01, HOS9656-11, HOS9656-11H, EVEH09655-07H, EVE965508, EVE9655-07H, and EVE9655-07.

Hoshizaki H9655-06

Hoshizaki H9655-06 is a 6-pack of 4HC-H water filter cartridges. Parts Town lists it as a pack with a 21,000-gallon capacity and describes it as eliminating dirt, rust, and chlorine tastes from affecting ice quality.

Hoshizaki H9320-51

Hoshizaki H9320-51 is a water filter head with cartridge. Parts Town lists it with a 2 gpm flow rate, 10–125 psi working pressure, and 35–100°F temperature range. It is shown as a popular fit for AM-50BAE, AM-50BAE-AD, and AM-50BAE-ADDS.

Hoshizaki H9320-53

Hoshizaki H9320-53 is a triple-head water filter system with cartridges. Parts Town lists it with a 6 gpm flow rate, 10–125 psi working pressure, and 35–100°F temperature range. It is shown as a popular fit for KM-1301SAH and KM-1301SAH-E.

How to verify your Hoshizaki water filter before ordering

The safest way to avoid ordering the wrong Hoshizaki filter is to match more than one identifier. Do not rely on brand name alone.

1. Check the ice machine model plate. Write down the full Hoshizaki model number exactly as printed.
2. Check the serial number and auxiliary code. Hoshizaki says model category results in its parts lookup can be organized by auxiliary codes, which are the first two characters in the serial number.
3. Read the existing cartridge label. If the cartridge says H9655-11, H9655-06, 4HC-H, or an older related part number, compare it carefully to the part number summary above.
4. Identify whether you are replacing a cartridge or a full system. H9655-11 and H9655-06 are cartridges. H9320-51 and H9320-53 are filter system/head assemblies with cartridges.
5. Confirm the setup physically fits. Check the filter head, available clearance, water line connections, and installation orientation.

Which Hoshizaki filter should you buy?

Use this simple decision guide:

• Replacing one 4HC-H cartridge? Start by checking Hoshizaki H9655-11.
• Buying cartridges in bulk? Check Hoshizaki H9655-06, the 6-pack version.
• Replacing the filter head and cartridge on an AM-50 series machine? Check Hoshizaki H9320-51.
• Replacing a larger triple-head filter system for a KM-1301SAH or KM-1301SAH-E setup? Check Hoshizaki H9320-53.

If your current filter system does not match these part numbers, do not force the fit. Use the Hoshizaki parts lookup, the machine manual, or a qualified service technician.

Common mistakes when replacing Hoshizaki ice machine filters

Mistake 1: Ordering by brand only

“Hoshizaki water filter” is not specific enough. Hoshizaki has different machines, capacities, filter systems, and cartridge setups. Always use the model number and existing cartridge number.

Mistake 2: Confusing a cartridge with a full filter system

H9655-11 and H9655-06 are cartridges. H9320-51 and H9320-53 are filter system/head assemblies with cartridges. If you only need the cartridge, do not buy the complete head assembly by accident.

Mistake 3: Ignoring serial or auxiliary-code differences

Some parts can vary by serial range or auxiliary code. Hoshizaki’s own parts lookup says model category results may be organized by auxiliary codes. If your serial number or aux code changes the required part, the model name alone may not be enough.

Mistake 4: Replacing a scale-control cartridge with a basic filter

If your existing filter setup handles scale, do not replace it with a lower-grade cartridge unless a technician or manufacturer resource confirms that the replacement is appropriate for your water conditions.

When should you replace a Hoshizaki ice machine water filter?

Replacement timing depends on water quality, usage, filter capacity, and the cartridge or system used. Follow the cartridge manufacturer’s rating and your service schedule.

Common signs that a filter may need replacement include:

• reduced ice production,
• slow water fill,
• cloudy ice,
• off taste or odor,
• visible scale buildup,
• an overdue service sticker,
• the cartridge has reached its rated capacity,
• a technician recommended replacement during service.

FAQ

Is Hoshizaki H9655-11 the same as H9655-06?

No. H9655-11 is a single water filter cartridge. H9655-06 is listed as a 6-pack of 4HC-H cartridges with a 21,000-gallon capacity.

Does H9655-11 fit the Hoshizaki AM-50BAE?

Parts Town lists AM-50BAE as a popular model fit for Hoshizaki H9655-11. You should still verify your existing cartridge, filter head, serial number, and aux code before ordering.

Does H9320-51 fit the Hoshizaki AM-50BAE?

Parts Town lists AM-50BAE as a popular model fit for Hoshizaki H9320-51. H9320-51 is a water filter head with cartridge, not just a replacement cartridge.

Does H9655-11 fit the KM-520MAJ?

Parts Town’s KM-520MAJ model page lists Hoshizaki H9655-11 among parts for that model. Confirm your actual filter setup before ordering.

What is Hoshizaki H9320-53?

H9320-53 is a triple-head water filter system with cartridges. Parts Town lists it with a 6 gpm flow rate and popular model fits including KM-1301SAH and KM-1301SAH-E.

Should I use a generic cartridge instead of a Hoshizaki OEM cartridge?

Use caution. A generic cartridge may look similar but still differ in fit, capacity, filtration type, or scale-control performance. For commercial equipment, verify compatibility before ordering.

Sources used to verify this chart

• Hoshizaki America Parts Manual Lookup
• Parts Town: Hoshizaki AM-50BAE Parts & Manuals
• Parts Town: Hoshizaki KM-520MAJ Parts & Manuals
• Parts Town: Hoshizaki H9655-11 Water Filter Cartridge
• Parts Town: Hoshizaki H9655-06 Water Filter Cartridge, 6-Pack
• Parts Town: Hoshizaki H9320-51 Water Filter Head with Cartridge
• Parts Town: Hoshizaki H9320-53 Triple-Head Water Filter System

Before you order

Match your machine model, serial number, aux code, and existing cartridge number before buying a replacement filter. If you are unsure whether you need a cartridge or a full filter system, take a photo of the current filter and contact your parts supplier or service technician.

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