This McMurdo Replacement HRU Kit is the hydrostatic release unit for McMurdo G8 series EPIRBs. The HRU holds the EPIRB in its bracket until water pressure triggers it if the vessel sinks. The EPIRB then floats free to the surface and activates.
Hydrostatic release units carry an expiration date and must be replaced on schedule to keep a float-free installation working. Check the date on your current unit before it lapses. An expired HRU may not release when it’s needed.
This kit is specific to the G8 series, so confirm your EPIRB model before ordering. Replacing it is a routine part of beacon maintenance. Check the label and fit on the intended wearer, since a PFD works properly only when it is the correct size and is worn as designed. Browse more PFD and beacon accessories.
- Replacement HRU for McMurdo G8 EPIRBs
- Releases the EPIRB to float free if the boat sinks
- Keeps a float-free installation in service
- Model-specific fit
