Hy-Pro
The Hy-Pro HPKL18-3MB is a 4µm dualglass hydraulic filter element. It measures 3.88" OD x 1.61" ID x 18.75" long. Filtration efficiency is rated at β4000 per ISO 16889. Seals are Nitrile (Buna-N), rated for -45°F to 225°F. Collapse pressure rating is 290 PSID. 44 verified cross-references are available from aftermarket manufacturers.
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Technical specifications for the Hy-Pro HPKL18-3MB filter element. Data sourced from manufacturer catalogs and verified against OEM documentation.
| Specification | Value |
|---|---|
| Performance | |
| Series | In-Tank Filter Element (HF4 Automotive Compatible) |
| Media Type | Dualglass |
| Micron Rating | 4µm |
| Max Operating Pressure | 100 psi (6.9 bar) |
| Collapse Rating | 290 PSID |
| Efficiency (ISO 16889) | β4000 |
| Operating Temperature | -45°F to 225°F |
| Dimensions | |
| Seal Material | Nitrile (Buna-N) |
| O.D. (inches) | 3.88" |
| I.D. (inches) | 1.61" |
| O.A.L. (inches) | 18.75" |
| Additional | |
| Filter Type | In-Tank Element |
| Element Length | 18" (457 mm) |
| Beta Ratio | β5[C] ≥ 4000 |
| Max Temperature | 225°F (107°C) |
Last verified: February 2026
44 verified replacements available from Commercial, Denison, Donaldson, Fairey Arlon, Fleetguard and 15 more
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The HY-PRO HPKL18-3MB is designed for use in hydraulic and lubrication filtration systems. With a 4µm rating, this element is suitable for servo valve protection and high-precision hydraulic systems. Nitrile (Buna-N) seals provide compatibility with standard petroleum-based fluids and mineral oils.
The 290 PSID collapse rating indicates the maximum differential pressure this element can withstand during cold starts or bypass conditions without structural failure. Ensure your system's maximum differential pressure does not exceed this rating.
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