This Harken AirBlock O-ring for HK404 block is a spare part for the maintenance and service of the Harken HK404 block.
The O-ring is relevant when the block needs to be inspected, repaired, or when a wear part needs replacement as part of general boat maintenance.
A practical choice for sailors and boat service professionals who prefer a specific Harken part for the HK404 rather than a generic solution.
Key features
Spare part for Harken HK404 block
Suitable for service and maintenance
Genuine Harken product identity
Practical small part for the boat's spare parts kit
For use on maritime equipment
