Fuel Bowl Sight Screw

The Holley Fuel Bowl Sight Screw (HLY26-13) is a critical replacement component for carburetor fuel bowl assemblies on marine engines and high-performance powerboats. After years on the water, seasoned boaters know that carburetor maintenance directly impacts engine reliability and fuel efficiency. This precision brass screw serves as the fastening point for fuel bowl sight plugs and gaskets, allowing you to monitor fuel levels visually and maintain proper carburetor function. Whether you're rebuilding a classic marine carburetor or performing routine maintenance, having the correct OEM Holley replacement parts ensures your engine runs clean and predictable.

Constructed from natural brass, this fuel bowl sight screw resists corrosion from saltwater spray and moisture exposure—essential for any boat operator running in coastal or freshwater environments. The brass material provides superior durability compared to steel alternatives, eliminating rust that can seize carburetor components and degrade fuel system integrity. At just 0.02 lbs and compact in profile, the screw integrates seamlessly into Holley carburetor float bowl assemblies without adding bulk or complicating installation. The gasket interface ensures a watertight seal, preventing fuel vapor leaks and maintaining consistent float bowl pressure for precise engine idle and cruise performance.

Boat owners, restoration enthusiasts, and marine mechanics rely on OEM Holley fuel bowl sight screws to restore carburetor assemblies to factory specifications. This part is ideal for anyone replacing worn sight plugs or performing a complete carburetor rebuild on classic inboard, outboard, or performance marine engines. Installation requires only basic hand tools—simply position the gasket and secure the screw into the float bowl mounting point. Keeping a spare on hand prevents downtime during extended trips, ensuring your carburetor stays sealed and your engine performs consistently across all throttle conditions.