Nitro Phyl Float

The Nitro Phyl Float by HOLLEY is a precision fuel system component engineered for anglers and boaters who demand reliable engine performance on the water. Whether you're running a high-performance bass rig, a saltwater center console, or a utility vessel with a carbureted engine, this float manages fuel delivery with the consistency your outboard or inboard motor requires. Designed for systems where traditional gravity-fed fuel tanks aren't practical, the Nitro Phyl Float ensures steady fuel pressure and prevents vapor lock during extended runs in variable operating conditions.

This compact float assembly (5 x 2.15 x 7 inches, weighing just 0.06 lbs) integrates into your fuel system to regulate float chamber level and maintain proper carburetor fill without overflow or starvation. The Nitro Phyl design uses a buoyant chamber that responds to fuel level changes, mechanically controlling a needle valve to hold the fuel level within the precise range your engine calibration requires. At this weight and size, installation is straightforward on most vintage and modern carbureted marine engines, and the component's minimal mass reduces inertia-related fuel sloshing during acceleration or rough seas.

Boaters who restore or maintain vintage outboards, or those upgrading fuel delivery on older inboard engines, benefit most from this OEM-quality float. It pairs seamlessly with HOLLEY carburetors and compatible fuel bowl assemblies, making it ideal for anglers who want factory-level reliability without the downtime of fuel starvation or overflow issues. Proper float adjustment during installation is essential—check your engine manual for the correct fuel level setting to maximize throttle response and fuel economy on the water.