Will this seal kit fit my Monarch hydraulic unit, or do I need to check some numbers first?
Question by: Carl A on May 6, 2025, 12:40 PM
This seal kit is a direct replacement from Monarch Industries, so it should fit perfectly if you're servicing the hydraulic power unit it was originally designed for. It's always a good idea to double-check your unit's model number against the 639573 part number just to be sure.
Answer by: Customer Support on May 8, 2025, 7:54 AM
Is this seal kit made by Monarch themselves, or is it just a third-party kit with their part number on it?
Question by: Neal W on Oct 24, 2025, 12:24 PM
Monarch Industries manufactures this kit directly. It carries their part number 639573 and is built to match the original seals used in their hydraulic power units, so you're getting OEM-spec dimensions rather than an aftermarket approximation. That matters when you're trying to avoid fitment headaches down the road.
Answer by: Customer Support on Oct 26, 2025, 6:47 AM
