Perko Gas Fill w/ Locking Cap f/ 1-1/2" Hose

The Perko Gas Fill with Locking Cap for 1-1/2" Hose is a marine-grade fuel system component designed for vessels requiring secure fuel transfer and storage access. Built with a chrome-plated zinc alloy flange and reinforced black plastic construction, this gas fill assembly provides corrosion resistance in saltwater environments while maintaining a tight seal during operation and at rest. The locking cap mechanism with keyhole cover prevents unauthorized fuel access and protects against accidental opening during rough seas or transport.

Specifications are engineered for 1-1/2" hose compatibility, with a 3-1/8" outer diameter flange and matching neck length that accommodates standard marine fuel line diameters. The mounting hole diameter of 2-1/8" with #8 screw fastening integrates into existing deck or transom installations without modification. A stainless steel grounding screw is included to prevent static discharge during fuel transfer—a critical safety feature on gasoline-powered watercraft. The cap retainer and gasket system ensures a watertight seal, while the strap-attached cap prevents loss overboard during refueling operations.

This component serves recreational boaters, commercial fishing vessels, and military watercraft operating in coastal and offshore conditions. The locking mechanism is essential for vessels docked in high-traffic marinas or used in training environments where fuel security is mandated. Perko's marine-grade construction has established a reputation for reliability in demanding saltwater applications where standard automotive fuel caps would fail within seasons.

When sourcing fuel system upgrades or replacements for marine vessels, buyers should verify hose diameter compatibility and deck/transom material thickness to ensure proper fastening. This Perko assembly (MPN 0599DPGCHR) is a direct replacement for OEM fuel fills on many boat models and integrates seamlessly with existing 1-1/2" fuel line systems already in service.