SKU: HLY241-230
UPC: 090127715192
MPN: 241-230
The Holley Aluminum Fill Cap Kit with 4-Bolt Bung (Part 241-230) is a direct-replacement fuel cell filler cap assembly engineered for auxiliary fuel tank systems, motorsport applications, and off-road vehicle setups. This screw-in cap mounts via a raised cell configuration and features a secure 4-bolt bung interface, making it the go-to choice for builders and operators maintaining custom fuel systems in high-performance and expedition vehicles.
The aluminum construction provides lightweight durability without sacrificing strength at connection points. The 4-bolt bung design ensures positive mechanical retention and reduces vibration-induced loosening common in rough terrain or high-rpm environments. Compact at 3.2 x 3.1 x 4.4 inches and weighing just 0.4 lbs, this cap integrates seamlessly into tight engine bays and fabricated fuel cell installations. The Holley 241-230 is manufactured to OEM tolerances, guaranteeing fit and function with fuel cell systems designed for this bung pattern.
This cap assembly suits off-road enthusiasts, motorsport competitors, and vehicle builders who demand reliability during extended field operations or track duty. Whether managing fuel in a rock-crawling rig, desert buggy, rally vehicle, or custom auxiliary system, the aluminum construction resists corrosion while the multi-bolt design prevents fuel leakage under load or extreme terrain conditions. Replacement or upgrade kits benefit operators who have experienced cap failure or are retrofitting newer fuel cell technology into existing platforms.
Holley is recognized within the motorsports and performance fuel systems sector for engineering components that prioritize consistency and durability. The 241-230 represents the standard aluminum bung-cap solution across multiple vehicle platforms, from light-duty auxiliary tanks to competition-spec fuel cells.
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