Replacement O-Ring Kit For The KRP4300 KRP4320

The King Racing Products Replacement O-Ring Kit for KRP4300 and KRP4320 fuel filter housings is a purpose-built maintenance package for marine fuel systems. It supplies the exact seals needed to restore airtight and leak-free connections at the filter housing interfaces. Boaters who handle their own service work will find this kit essential for keeping fuel delivery systems running safely.

Manufactured from synthetic rubber compounds formulated for fuel compatibility, these o-rings resist swelling, hardening, and degradation caused by ethanol-blended gasoline and diesel. The kit contains matched pairs in 6 AN and 12 AN sizes, engineered to produce the correct compression against the KRP4300 and KRP4320 housing surfaces. This precise fitment eliminates the guesswork associated with sourcing generic replacements.

Replacing worn o-rings at regular service intervals is one of the most effective ways to prevent fuel leaks and maintain consistent filter performance. This kit is a practical addition to any onboard maintenance supplies, whether you operate a recreational fishing boat, a cruising yacht, or a commercial vessel. Having the correct seals on hand means fewer delays and greater peace of mind on the water.