Perko 0543 Vented Deck Fill, 1-1/2 in Hose, Straight Neck, 5/8 in Vent Hose

Overview

The Perko 0543 is a vented straight-neck deck fill for 1-1/2" fill hose, built for boat fuel or water fill locations where the fill and vent need to be handled at the deck fitting. It uses a black polymer body with a polymer cap, an integral tank vent, a black polymer cap strap, and a straight neck that suits installations where the hose can run directly below the deck plate.

This fill is sized for 1-1/2" fill hose and 5/8" vent hose. Key installation dimensions include a 3-5/8" outside flange, 2-7/16" neck length, 2-1/8" mounting hole diameter, and #8 screw size, giving installers the measurements needed before cutting or replacing an existing deck fill.

The gas-marked versions include a flame arrestor and anti-surge valve as part of the integral tank vent. For gasoline fuel systems, this series meets U.S.C.G. Safety Standards, 33 CFR 183, but it is not built to meet 40 CFR 1060 subpart B emissions requirements.

Key features

• Vented deck fill layout combines the fill opening and tank vent at one deck location, helping simplify older fuel or water fill installations that use this style of fitting.
• Fits 1-1/2" fill hose and 5/8" vent hose, two critical sizes to confirm before replacing an existing deck fill.
• Straight neck works well where there is clear space below the deck plate for a direct hose run.
• Black polymer body with black polymer strap keeps the cap attached during fueling, filling, and routine deck access.
• No ground wire is required, which can reduce installation complexity when replacing a compatible non-metallic fill.
• Gas and water markings are available, with cap color options that help match the deck layout and reduce mix-ups at the fill point.

Variants

This Perko 0543 fill is offered in separate configurations for gas and water service, with the visible marking and cap color changing by variant.

The 1-1/2" fill hose size, 5/8" vent hose size, straight neck layout, black polymer body, black polymer strap, and main installation dimensions remain consistent across these listed configurations.

• 0543DPGBLK: Marked for gas with a black cap. This version suits gasoline fill locations where a black cap matches the deck hardware or surrounding finish.
• 0543DPGWHT: Marked for gas with a white cap. This version keeps the gas marking while using a white cap for boats with lighter deck fittings or cockpit trim.
• 0543DPWBLK: Marked for water with a black cap. This version separates the water fill point from fuel fills through its water marking while keeping the same black cap appearance.

Installation and fit

Before installation, check the available space under the deck because the straight neck needs room for the fill hose to run without a hard bend. The 2-1/8" mounting hole diameter and 3-5/8" outside flange are the main deck measurements to compare against the existing opening or the planned cutout.

Use hose and clamps appropriate for the tank system being connected. For fuel installations, the vent hose connection, flame arrestor, and anti-surge valve should be treated as part of the fuel system layout, not just as deck hardware.

Use on board

This fill is a practical match for small powerboats, fishing boats, and other vessels using a traditional vented deck fill with a 1-1/2" fill hose. It is most useful when replacing a worn deck fill or setting up a straightforward tank access point where the service marking, cap color, hose size, and mounting dimensions all match the boat.