Perko 0582 Style Replacement Cap w/Inserts

The Perko 0582 Style Replacement Cap with Inserts is a critical component for marine and automotive fuel system integrity, designed to seal fuel tanks and prevent contaminants from entering your fuel supply. Whether you're restoring a classic boat, updating fuel system components on a vintage vehicle, or maintaining existing marine equipment, this replacement cap ensures a secure, watertight seal that protects both fuel quality and system longevity. Built to Perko's OEM standards, this cap is engineered for reliability in demanding saltwater and freshwater environments where corrosion and debris present constant threats to fuel system health.

The integrated insert design provides dual functionality: the cap itself seals the tank opening with precision-fitted threads, while the included inserts allow for secure fastening and custom configurations depending on your specific fuel system setup. Constructed from corrosion-resistant materials, the Perko 0582 resists rust and degradation caused by fuel vapors, moisture exposure, and UV radiation—common failures in caps left exposed to marine conditions. The compact 4 x 2 x 7-inch footprint makes installation straightforward on standard fuel tank openings, and the lightweight 0.5 lbs construction minimizes any impact on overall system weight while maintaining structural rigidity and seal pressure integrity.

Mechanics and boat owners benefit most from this cap when replacing worn or corroded factory components, as the OEM-equivalent design eliminates compatibility guesswork and ensures proper fitment on Perko-equipped systems. This replacement is essential maintenance for vessels experiencing fuel odors, slow fuel delivery, or visible corrosion around the tank opening—all indicators that your current cap seal has failed. Installation requires no special tools; simply remove the old cap, verify thread compatibility with your tank opening, insert the appropriate insert configuration, and hand-tighten for a secure seal. Ideal for both preventive maintenance programs and emergency fuel system repairs, the Perko 0582 Style Replacement Cap delivers reliability that serious mechanics and marine enthusiasts expect.