Perko Deck Fills
Perko 0782DPG98S Fuel Fill Cap with Vacuum Pressure Relief Valve, Stainless Steel
Perko 0540DPG99A Chrome Plated Bronze Vented Replacement Gas Cap with O-Ring and Chain
Perko 0660DPG99A EPA Compliant Sealed Fuel Fill Cap with Vacuum Pressure Relief
Perko 1270DPW99A Replacement Water Fill Cap for 1270 Series Deck Plates Black
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Perko Deck Fills: Precision Engineering for Every Vessel
When it comes to safely transferring fuel, water, or waste through a boat's deck, the fitting you choose matters as much as the hose behind it. Perko has spent more than a century earning the trust of boatbuilders, boatyards, and serious recreational boaters alike, and their deck fills are one of the clearest expressions of that legacy. Precision-machined and built to survive the marine environment, Perko deck fills are specified on new builds and relied upon for replacements across a massive range of vessels.
Marinium Alloy & Bronze Construction
One of the defining characteristics of Perko's deck fill lineup is the material selection. Perko produces deck fills in their proprietary Marinium alloy — a marine-grade material engineered to resist the corrosion, UV exposure, and salt spray that destroy lesser hardware — as well as in chrome-plated bronze and chrome-plated zinc alloy options for different application needs. Whether you're outfitting a freshwater runabout or a bluewater cruiser, there's a Perko fill built for the conditions you face.
Key Features of Perko Deck Fills
- Integral tank vent with flame arrestor — select models include a built-in flame arrestor on the vent, a critical safety feature for gasoline fuel systems that meets U.S. Coast Guard safety standards (33 CFR 183)
- Angled-neck options — for tight-space installations where a straight neck won't clear the deck structure, Perko offers angled-neck variants that simplify routing
- O-ring and integral cap retainer — every cap ships with a sealing O-ring and an integral retainer so the cap stays with the fitting, eliminating the frustrating problem of lost caps underway
- Deck plate key included — Perko bundles the appropriate opening key (Fig. No. 1248 style) with compatible fills, ensuring you have what you need right out of the box
- Available in multiple hose sizes — the lineup spans 1-1/4" and 1-1/2" hose connections, covering the most common marine plumbing configurations
- Marked for fuel, water, or unmarked — caps and bodies are labeled to prevent cross-filling, a simple but essential safety measure on multi-tank vessels
A Legacy of American Manufacturing
Perko is a fully vertically integrated manufacturer based in Miami, Florida, with a product catalog spanning over 1,000 individual products across more than 5,000 SKUs. Their deck fills are a cornerstone of that catalog — precision-machined hardware that has been trusted by OEM boatbuilders and aftermarket installers for generations. That "Made in America" commitment, combined with a design philosophy that prioritizes durability and ease of installation, is what sets Perko deck fills apart from generic alternatives.
Choosing the Right Perko Deck Fill
Selecting the correct Perko deck fill comes down to three key factors: hose diameter, fluid type (fuel, water, or waste), and whether a flame arrestor-equipped vent is required by your fuel system's configuration. For gasoline systems especially, choosing a fill with an integral tank vent and flame arrestor is not just a best practice — it's a Coast Guard requirement. Perko's catalog makes it straightforward to identify the right specification, and replacement O-rings, keys, and caps are readily available to keep existing installations in top shape for years.