Attwood Deck Fill f/Carbon Canister System - Angled Body & Scalloped Black Plastic Cap

The Attwood Deck Fill for Carbon Canister System with angled body and scalloped black plastic cap is purpose-built for marine fuel systems requiring precision emissions control and overpressure relief. Whether you're maintaining an existing inboard or outboard fuel system or upgrading a marine engine, this deck fill assembly addresses a critical safety function: preventing fuel vapors from building excessive pressure in the tank while maintaining compliance with diurnal emission standards. Marine mechanics and boat owners recognize this component as essential infrastructure for any closed-loop fuel system that manages temperature-driven vapor expansion.

The angled body design optimizes flow geometry for deck-mounted installations, while the scalloped black plastic cap houses automatic pressure relief valves that activate during overpressure conditions. These built-in safety valves prevent tank rupture or fuel line rupture by venting excess vapor when internal pressure exceeds design limits, while the carbon canister system captures and controls emissions during thermal cycling. The 0.5 lb weight and compact 7 x 6 x 7 inch footprint make this a space-efficient solution for tight engine compartments. Attwood Marine's engineering ensures the cap seals reliably and the fill neck threads accept standard fuel filler hoses without modification.

This deck fill is ideal for marine mechanics rebuilding or repairing fuel systems on boats with enclosed fuel tanks and closed-loop emissions architecture. Installation requires basic mechanical knowledge and standard hose clamps; compatibility depends on your fuel system design and whether your boat currently runs a carbon canister system. Replacement is straightforward once the old unit is disconnected, making this a reliable upgrade for vessels that have experienced cap leakage or pressure-relief malfunction. For boats operating in warm climates where fuel temperature swings are pronounced, this component becomes even more critical to system longevity and safety compliance.