Toro 117-0390 Hydro Filter (Cross-Reference Chart)
Toro part number 117-0390 is identified for hydraulic-filter use, but that number alone does not confirm fit on every Toro machine. I cannot verify an aftermarket cross-reference from the part number alone. Check your machine’s model and serial number in Toro parts information, then compare any proposed substitute’s full specifications before buying or installing it.
You may have a filter that looks right, a listing that says “replaces 117-0390,” and a machine that still needs to get back to work. The risky part is that appearance and thread fit do not prove a hydraulic filter is suitable. A mismatch can affect oil flow or bypass behavior, so verify the application before you install anything.
What Toro 117-0390 identifies
This part number is identified for hydraulic-filter applications. It does not, by itself, identify every compatible Toro machine or prove that another filter is an equal replacement. Use the machine’s model and serial number, plus the applicable parts listing, to confirm fit before ordering.
In practical terms, treat 117-0390 as a starting point for research, not a universal fitment code. Toro machines can use different hydraulic components. A filter that fits the mounting head may still have an unsuitable filtration rating, bypass setting, or seal arrangement.
I would first find the model and serial number on the machine’s identification label. Then I would use Toro’s model- and serial-specific parts information, or ask an authorized Toro dealer to check the hydraulic-system listing. Compare the listing with the number on the installed filter, if it is readable.
Do not use chainsaw fuel ratios, chain sizes, bar oil, or engine-speed figures to judge this part. They have no bearing on hydraulic-filter fitment.
Cross-reference chart and verification status
A cross-reference chart is useful only when the listed substitute is supported by application data. I cannot confirm an aftermarket equivalent for 117-0390 here. The chart below separates what is identified from what still needs proof, so an unverified sales claim is not mistaken for confirmed compatibility.
| Item to check | What can be stated | What you need to verify |
|---|---|---|
| Toro part number | 117-0390 is identified for hydraulic-filter applications | That it is listed for your exact machine model and serial number |
| Aftermarket cross-reference | No equivalent is verified here | Written application support from the filter maker or supplier |
| Thread and pitch | Not established by the part number alone | Exact thread size and pitch in technical data |
| Gasket and seal | Fit cannot be confirmed by appearance | Gasket dimensions and where it seals |
| Filter size and clearance | Not established here | Overall dimensions and clearance on the machine |
| Filtration rating | No rating or test basis is confirmed here | Rating and the test method used to report it |
| Bypass valve | Setting, or whether one is present, is not confirmed here | The specified setting or confirmation that no bypass is used |
| Fluid suitability | Must match the machine’s hydraulic system | Filter maker’s stated application and fluid suitability |
A listing that says “fits Toro” or “replaces 117-0390” is not enough on its own. Ask the seller to identify the exact machine application and provide the filter’s relevant specifications. If those details are not available, treat the cross-reference as unconfirmed.
The best confirmation is agreement between the machine’s parts information and the filter maker’s application data. If they conflict, pause and ask Toro or an authorized dealer to resolve the difference.
How to confirm the correct filter
Fitment means that a part is suitable for a specific machine and system, not merely that it can be screwed into place. Before purchasing a replacement, match the filter to the machine’s exact model and serial number, then check the technical details that affect sealing, clearance, and oil flow.
Follow this check in order:
- Record the machine details. Write down the model and serial number from the machine label. Avoid relying on a family name or a similar model number.
- Check the parts listing. Use Toro’s parts lookup or an authorized dealer to find the hydraulic filter listed for that exact machine.
- Read the filter marking. If the installed filter number is visible, record it. A prior owner may have installed a substitute, so do not treat the old filter as proof of correct fit.
- Compare technical data. For any proposed replacement, verify thread and pitch, gasket dimensions and sealing position, overall clearance, filtration rating and test basis, bypass setting or lack of a bypass, and hydraulic-fluid suitability.
- Resolve gaps before ordering. If the listing or data sheet leaves a critical item unclear, ask the supplier or Toro for confirmation. Do not fill in missing values by guessing.
Keep a record of the machine model, serial number, installed filter number, replacement number, and source used to confirm fitment. That record can save time at the next service and help you spot a mismatch in a future parts listing.
Safe filter replacement
A hydraulic filter change can expose you to hot oil, stored pressure, and contamination entering the system. Prepare the machine as its manual directs, keep dirt away from the open filter head, and follow the model-specific instructions for installation, oil level, and any required system purge.
Before removing the filter
Park on level ground, lower attachments, disengage the PTO, set the brake, stop the engine, and remove the key. Let hydraulic parts cool. Relieve stored pressure only by the procedure in the machine manual; do not loosen a filter or fitting to release pressure.
Clean dirt and debris from around the filter and mounting head before removal. Place a drain pan below the filter. Hydraulic oil can remain hot, and the system may still hold pressure, so use care when loosening the old filter.
Remove and install
Take off the old filter without allowing dirt to enter the exposed filter head. Check that its gasket came off with it. If the old gasket sticks to the mounting surface and a new filter is installed over it, the two seals can fail to seal properly and oil can escape.
Confirm once more that the replacement is listed for 117-0390 or for your machine’s exact model and serial application. Follow the manual’s directions for gasket lubrication and tightening. Do not guess a torque value or substitute a general rule for the machine’s instructions.
After installation, start the machine and check for leaks only as directed by the manual. Verify the reservoir level and complete any required purge or function test before returning the machine to work. If you see a leak or notice abnormal operation, stop and investigate rather than continuing to use the machine.
Service scenarios: how to handle common choices
These examples are decision scenarios, not reports of specific repairs. They show how to use the parts information and cross-reference checks when the installed filter, a supplier listing, and the machine itself do not all point to the same answer.
| Situation | Safer next step | Why |
|---|---|---|
| A replacement listing says it replaces 117-0390 but gives no machine applications | Ask for written application details and technical data; hold off if they are unavailable | A replacement claim alone does not confirm fit or hydraulic performance |
| The old filter number differs from the number in the Toro parts listing | Check the machine’s model and serial number with Toro or an authorized dealer | The old filter may not be the correct one for the machine |
| The new filter threads on but its seal or dimensions appear different | Do not install it; compare the specifications with the correct application | Thread fit alone does not confirm sealing or clearance |
| The machine leaks after filter service | Stop operation and inspect the installation under the manual’s guidance | A doubled gasket or other sealing problem can cause oil loss |
| Hydraulic function is poor after service | Stop and follow the manual’s checks, including any required oil-level or purge steps | Continued operation with a fault may risk damage |
I would not call a filter “compatible” based on a visual match or a successful first turn onto the mounting head. Those checks do not establish the internal rating or bypass behavior. When information is missing, a short pause for parts confirmation is safer than testing an uncertain filter on the machine.
Storage, records, and warning signs
Correct storage and clear service records help preserve a new filter and make the next replacement easier to verify. Keep the part clean and in its original packaging until use, protect its gasket and ports from dirt, and follow local requirements for disposing of used filters and hydraulic oil.
During service, inspect the filter head and nearby hoses for signs of leaks or damage. After service, stop using the machine if you find oil leaking, hear abnormal noise, see overheating, or lose hydraulic function. Do not run it with a leaking filter, a doubled gasket, or a replacement whose application has not been confirmed.
An incompatible filter can restrict oil flow or open a bypass incorrectly. That may lead to overheating, poor machine control, or component damage. If the machine shows any of these warning signs, use the manual’s troubleshooting steps and contact a qualified service source if the cause is not clear.
Frequently asked questions
Is 117-0390 a hydraulic filter?
It is identified for hydraulic-filter applications. Confirm that it is the correct filter for your machine by checking the model- and serial-specific parts information.
What aftermarket filter replaces 117-0390?
No aftermarket equivalent is verified here. Treat replacement claims as unconfirmed until the supplier documents the exact application and relevant technical specifications.
Will any filter with the same thread fit?
No. Thread fit alone does not prove correct sealing, clearance, filtration rating, bypass behavior, or hydraulic-fluid suitability.
How do I confirm the right filter for my Toro machine?
Use the machine’s model and serial number in Toro parts information or ask an authorized Toro dealer. Compare any proposed substitute with the system’s listed filter and technical requirements.
What specifications should I compare before buying a substitute?
Check thread and pitch, gasket dimensions and sealing position, overall clearance, filtration rating and test basis, bypass setting or absence, and hydraulic-fluid suitability.
Can I identify the correct filter from the old filter alone?
Not reliably. The old filter may be a substitute or may have been installed incorrectly. Compare its number with the machine’s parts listing.
Should I install a filter that looks the same?
No. External appearance does not confirm internal specifications or application. Verify the machine fit and technical data first.
What should I do if the filter leaks after installation?
Stop operation. Follow the manual’s guidance to inspect the seal and installation. Check that the old gasket was removed, and do not run the machine while it is leaking.
Do I need to purge the hydraulic system after changing the filter?
That depends on the machine. Follow its manual for oil-level checks, startup, purging, and function tests; do not assume one procedure applies to every Toro model.
How should I store a replacement filter?
Keep it clean, dry, and in its original packaging. Protect the gasket and keep dirt out of the ports until installation.
(This article was written by one of our staff writers, Harrison Croft. Visit our Meet the Team page.)
