Replacement for Parker 938304Q Hydraulic Filter Element

Yes. Dimensionally identical to the Parker 938304Q — same OD, length, flow direction, and double open-end configuration. Drops straight in with no modification required.

A nominal rating captures roughly 50–90% of particles at the stated size — and varies between manufacturers. An absolute rating means 99.5%+ capture efficiency, verified by ISO 16889 multi-pass testing of the media. This filter is 20 Micron; B20 = 200, B26.6 = 1000.

Yes — independently verified. SONA's 20 Micron; B20 = 200, B26.6 = 1000 microglass media is tested to ISO 16889 with a Beta ratio of BX = 200, matching or exceeding performance in both efficiency and dirt-holding capacity.

Change the Parker 938304Q element when differential pressure reaches 25 PSID, or at your OEM service interval — typically every 500–2,000 operating hours depending on system load and contamination levels. Do not wait until the bypass valve activates.