Diagnetics
Diagnetics HPB439B03
Industrial filter element
Diagnetics HPB439B03 specifications
The Diagnetics HPB439B03 is a 5µm microglass filter element. It measures 3.735" OD x 2.19" ID x 39" long. Filtration efficiency is rated at 1000 per ISO 16889. 2 verified cross-references are available from aftermarket manufacturers. Specifications verified. Last reviewed: April 2026
Physical fit
- Outer Diameter (O.D.)
- 3.735"Verified via cross-reference
- Inner Diameter (I.D.)
- 2.19"Verified via cross-reference
- Overall Length
- 39"Verified via cross-reference
- Micron Rating
- 5µmVerified via cross-reference
- Seal Material
- Not yet verified from an OEM source
- Connection / Thread
- Not yet verified from an OEM source
Performance: Diagnetics published values
These are Diagnetics's own published numbers. Performance specs differ by brand and are never inherited across cross-references.
- Efficiency (ISO 16889)
- 1000
- Media Type
- Microglass
What replaces the Diagnetics HPB439B03?
2 published cross-references on file. Select to expand.
What replaces the Diagnetics HPB439B03?
2 published cross-references on file. Select to expand.
A cross-reference confirms dimensional fit and micron rating, not performance equivalence. Beta ratio, collapse rating, media, and service life can differ between brands.
Published cross-references
| Part Number | Manufacturer | Match |
|---|---|---|
| HP91L39-2MB | Hy-Pro | Verified |
| SF9901-39-3UM | Swift Filters | Sourced |
Application & Compatibility
The DIAGNETICS HPB439B03 is designed for use in hydraulic and lubrication filtration systems. With a 5µm rating, this element is suitable for servo valve protection and high-precision hydraulic systems.
Frequently Asked Questions
What micron rating is the Diagnetics HPB439B03?
What are the dimensions of the Diagnetics HPB439B03?
Is there a cross-reference for the Diagnetics HPB439B03?
How this entry is verified
Every specification on this page names its source: manufacturer documents first, distributor catalogs second, decoded part-number patterns labeled as such. When a value has not been verified from an OEM source, the cell says so. Cross-references are fit claims, never performance claims.
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