Hydraulic Filter Finder: Find a Replacement by Part Number
Identifying the correct replacement hydraulic filter element often starts with the manufacturer and part number printed on the existing filter. Hydraulic filter manufacturers use different reference systems, which means the replacement element may have a completely different part number even when it is intended for the same application.
A hydraulic filter cross reference can be used to compare an existing filter reference with a corresponding replacement element. This is particularly useful when replacing hydraulic filters from manufacturers such as Fleetguard, Donaldson, Parker and other established filtration brands.
If you already have the manufacturer and part number from the existing filter, you can search the Flowfit Hydraulic Filter Finder .
Quick answer
A hydraulic filter cross reference is used to identify a replacement filter element from an existing manufacturer's part number. Record the manufacturer and complete reference from the filter already fitted, enter the part number into the Hydraulic Filter Finder and compare the returned Filtrec element with the original specification before ordering.
- 1) What is a hydraulic filter cross reference?
- 2) How does the Hydraulic Filter Finder work?
- 3) Where do I find the hydraulic filter part number?
- 4) Hydraulic filter cross-reference examples
- 5) What should I check before fitting a replacement filter?
- 6) What if the filter part number cannot be found?
- 7) Hydraulic filter cross-reference checklist
- 8) Hydraulic Filter Finder FAQs
1. What Is a Hydraulic Filter Cross Reference?
A hydraulic filter cross reference links one manufacturer's filter part number with an alternative filter element designed for a corresponding application.
Filter manufacturers use their own product references. As a result, a Fleetguard, Donaldson, Parker or Filtrec filter element may have a different part number even where the elements are intended to provide comparable fit and filtration characteristics.
Cross-referencing provides a starting point when an existing hydraulic filter needs to be replaced and the original manufacturer's reference is already known.
What information is useful?
The manufacturer name and complete filter part number printed on the existing element provide the most useful starting point for a cross-reference search.
A cross reference still needs to be checked
A cross-reference result should be checked against the original filter specification. Filtration rating, media, dimensions, seals, collapse pressure and other operating requirements may need to be confirmed before the replacement element is installed.
2. How Does the Hydraulic Filter Finder Work?
The Hydraulic Filter Finder uses the reference from an existing filter element to search for a corresponding Filtrec replacement.
The search begins with the part number already fitted to the machine or hydraulic system rather than requiring the Filtrec reference to be known in advance.
The Basic Stages of a Filter Cross-Reference Search
1. Identify the existing filter
Record the manufacturer and complete part number shown on the hydraulic filter element.
2. Search the reference
Enter the complete part number into the Hydraulic Filter Finder, following any formatting instructions shown beside the search field.
3. Review the Filtrec reference
Check the corresponding Filtrec filter element returned by the cross-reference search.
4. Check the specification
Confirm the filtration rating, media, dimensions, seals and other relevant element requirements.
Filter cross-referencing in simple terms
Existing filter reference → Hydraulic Filter Finder → Filtrec reference → specification check → replacement element.
3. Where Do I Find the Hydraulic Filter Part Number?
The part number is normally printed, stamped or labelled on the existing hydraulic filter element.
Record the complete reference wherever possible. A single missing letter or number can result in a different filter element being identified.
If the label is damaged or difficult to read, record as much information as possible from the filter and any available maintenance records.
| Information to record | Why it is useful |
|---|---|
| Manufacturer | Identifies the original filter brand and reference system. |
| Complete part number | Provides the main reference used during the cross-reference search. |
| Micron rating | Helps confirm the filtration requirement where this information is shown. |
| Element dimensions | Allows the physical size of the replacement element to be checked. |
| Filter housing | Can provide additional information where the element reference is unclear. |
| Machine or application | Provides useful context when identifying an existing filtration arrangement. |
4. Hydraulic Filter Cross-Reference Examples
The examples below show how an existing manufacturer's hydraulic filter reference can correspond with a Filtrec replacement reference.
| Manufacturer | Existing filter reference | Filtrec reference |
|---|---|---|
| Fleetguard | HF6173 | A110C10 |
| Donaldson | P165569 | A421G25 |
| Fleetguard | HF6555 | A413G25 |
| Fleetguard | HF6553 | A413G15 |
| Donaldson | P171579 | R166G10B |
| Parker | 933253Q | D620G25 |
These examples illustrate the cross-reference process. Always confirm the current finder result and complete filter specification before ordering.
Have a different filter reference?
Enter the existing part number into the Hydraulic Filter Finder to search for a corresponding Filtrec element.
5. What Should I Check Before Fitting a Replacement Hydraulic Filter?
A matching cross-reference is only one part of selecting a replacement hydraulic filter element.
The technical specification of the replacement should be compared with the requirements of the existing filter and hydraulic system before installation.
Filtration rating
Confirm the required micron rating and filtration performance for the hydraulic system.
Filter media
Check that the replacement element uses suitable filtration media for the application.
Dimensions
Check the outside diameter, inside diameter and element length where applicable.
Seal material
Confirm that the seal material is suitable for the hydraulic fluid and operating conditions.
Collapse pressure
Confirm that the element construction is suitable for the filter housing and operating conditions.
Element configuration
Check any bypass, end-cap, flow-direction or other design requirements associated with the existing element.
Do not rely on physical size alone
Two hydraulic filter elements can have similar dimensions but different filtration media, micron ratings, seals and operating characteristics. The complete specification should be checked before a replacement is fitted.
6. What If the Filter Part Number Cannot Be Found?
If the Hydraulic Filter Finder does not return a result, first check that the reference has been entered correctly.
Older filters, damaged labels and manufacturer reference variations can make identification more difficult.
Where possible, collect additional information from the existing element and filter housing.
Useful information when a filter cannot be identified
Record the manufacturer, part number, dimensions, filtration rating, filter-housing reference and machine details. A clear photograph of the existing filter label can also help when identifying a replacement.
Contact Flowfit with the information available for help identifying the filter.
7. Hydraulic Filter Cross-Reference Checklist
Collecting the main filter information before searching makes it easier to identify and verify a replacement element.
| Check | Why it matters |
|---|---|
| Manufacturer | Confirms the original filter brand. |
| Complete part number | Provides the main cross-reference search term. |
| Filtration rating | Helps confirm the required level of contamination control. |
| Filter media | Confirms that the replacement media is suitable for the application. |
| Element dimensions | Helps check physical fit alongside the connection and end-cap arrangement. |
| Seal material | Helps confirm compatibility with the hydraulic fluid. |
8. Hydraulic Filter Finder FAQs
What is a hydraulic filter cross reference?
A hydraulic filter cross reference links an existing manufacturer's filter number with an alternative replacement element.
How do I find a replacement hydraulic filter?
Record the manufacturer and complete part number from the existing
element and enter the reference into the Hydraulic Filter Finder.
Check the returned replacement against the original filter specification
before ordering.
Do I need to know the Filtrec part number?
No. The existing manufacturer's filter reference can be used as the starting point for the search.
What if the Filter Finder does not recognise my part number?
Check the complete reference carefully and follow the formatting instructions shown in the finder. If no result is available, record the manufacturer, filter dimensions, filtration rating, housing details and machine information before contacting Flowfit.
Should I check the filter specification after cross-referencing it?
Yes. The filtration rating, media, dimensions, seals and other technical requirements should be checked before the replacement element is fitted.
Finding the Correct Replacement Hydraulic Filter
The existing manufacturer's filter reference provides a useful starting point when identifying a replacement hydraulic filter element.
Before ordering, confirm:
- The original filter manufacturer
- The complete filter part number
- The required filtration rating
- The filter media
- The element dimensions
- The seal material
- The relevant operating requirements
Search the Hydraulic Filter Finder
Enter the manufacturer part number from your existing hydraulic filter element to search for a corresponding Filtrec replacement.
Tip: Before disposing of an old hydraulic filter element, photograph the product label and record the manufacturer and complete part number. This information can make future cross-referencing much easier.
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