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Boat Deck Fills, Gas Caps & Tank Keys

To protect your fuel tank, make sure you install a quality boat fuel cap. A proper boat gas cap comes with a clear label for the type of fuel, can include a vent and might even lock to protect your fuel. Having a boat gas cap key within easy reach is also vital during the busy summer months. Fisheries Supply is your premier supplier of marine gas caps and boat water fills from the top brands. We offer a full-range of deck fills – including boat fuel filler fittings, marine water fills, and waste fills – along with a variety of multi-purpose boat fuel cap keys and replacement marine fuel caps. We even offer EPA compliant fuel fills for your sailboat, power or pontoon boat – so shop today and save. If you are also setting up the tank, browse our great selection of boat fuel tank vents.


Push-Up Deck Fills

Whitecap Industries

Whitecap Deck Fills

Available in 5 options

In Stock
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Ships immediately
ssdf66124 of Marine Hardware Deck Fill - Toggle Cap

Marine Hardware

Deck Fill - Toggle Cap

Available in 4 options

In Stock
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Ships immediately
07-n-11-8 of PSS Shaft Seals O-Ring Pack and Screw Set

PSS Shaft Seals

O-Ring Pack and Screw Set

SKU: 195885 | Item ID: PSS 07-N-11-8

In Stock
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Ships immediately
Splash-Stop for Fuel

Vetus

Splash-Stop for Fuel

Available in 3 options

In Stock
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Ships immediately
Stainless Deck Fills

Vetus

Stainless Deck Fills

Available in 4 options

In Stock
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Ships immediately
Deck Fill

Vetus

Deck Fill

Available in 4 options

Special Order Only
Snap Tool - Stainless Steel Multi Purpose Deck Key

Davis Instruments

Snap Tool - Stainless Steel Multi Purpose Deck Key

SKU: 455668 | Item ID: DAV 382

In Stock
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Ships immediately
Deck Plate Keys

Perko

Deck Plate Keys

Available in 4 options

In Stock
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Ships immediately
Deck Plate Key

Perko

Deck Plate Key

SKU: 24512 | Item ID: PKO 1247DP0BLK

In Stock
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Ships immediately
dpa4 of Beckson Beckson DPA-4 Deck Plate Key

Beckson

Beckson DPA-4 Deck Plate Key

SKU: 389882 | Item ID: BEC DPA-4

Special Order Only
Universal Deck Fill Key

Sea-Dog Line

Universal Deck Fill Key

Available in 2 options

In Stock
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Ships immediately
Universal Deck Fill Key - Small

Sea-Dog Line

Universal Deck Fill Key - Small

SKU: 70814 | Item ID: SDL 335695-1

In Stock
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Ships immediately
Fuel Inlet Check Valve - NPTF Threaded, Straight, EPA Compliant

Perko

Fuel Inlet Check Valve - NPTF Threaded, Straight, EPA Compliant

SKU: 392600 | Item ID: PKO 0584T00

In Stock
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Ships immediately
EPA Compliant Sealed Ratcheting Stainless Steel Scalloped Cap Angled Neck Fuel Fill - with Metallic Decal

Perko

EPA Compliant Sealed Ratcheting Stainless Steel Scalloped Cap Angled Neck Fuel Fill - with Metallic Decal

SKU: 377588 | Item ID: PKO 0780DPGSTS

In Stock
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Ships immediately
main of Perko EPA Sealed Ratcheting Chrome Cap Fuel Fill w/ Pressure Relief Valve - Straight Neck

Perko

EPA Sealed Ratcheting Chrome Cap Fuel Fill w/ Pressure Relief Valve

SKU: 377568 | Item ID: PKO 0661DPGCHR

Out of Stock
EPA Compliant Sealed Ratcheting Chromed Dimpled Cap Angled Neck Fuel Fill

Perko

EPA Compliant Sealed Ratcheting Chromed Dimpled Cap Angled Neck Fuel Fill

SKU: 377608 | Item ID: PKO 0790DPGCHR

In Stock
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Ships immediately
Sealed Flip-Top Cap Fuel Fills - EPA Compliant

Perko

Sealed Flip-Top Cap Fuel Fills - EPA Compliant

SKU: 377614 | Item ID: PKO 1418G00WHT

Special Order Only
EPA Compliant Sealed Ratcheting Straight Fuel Fill - Gas

Perko

EPA Compliant Sealed Ratcheting Straight Fuel Fill - Gas

Available in 2 options

Special Order Only
EPA Compliant Sealed Ratcheting Chromed Scalloped Cap Straight Neck Fuel Fill - with Metallic Decal

Perko

EPA Compliant Sealed Ratcheting Chromed Scalloped Cap Straight Neck Fuel Fill - with Metallic Decal

SKU: 457665 | Item ID: PKO 0781G00STS

Out of Stock
0791 of Perko EPA Straight Gas Fill

Perko

EPA Straight Gas Fill

SKU: 1003522 | Item ID: PKO 0791DPGCHR

Out of Stock
EPA Compliant Sealed Ratcheting Cap Fill for 1-1/2" Hose

Perko

EPA Compliant Sealed Ratcheting Cap Fill for 1-1/2" Hose

SKU: 456431 | Item ID: PKO 0663G00BLK

In Stock
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Ships immediately
EPA Compliant Sealed Stainless Ratcheting Scalloped Cap Angled Fuel Fill

Perko

EPA Compliant Sealed Stainless Ratcheting Scalloped Cap Angled Fuel Fill

SKU: 1003523 | Item ID: PKO 0782DPGSTS

Out of Stock
0782 of Perko Sealed Ratcheting Cap Fill

Perko

EPA Compliant Sealed Ratcheting Cap Fill

SKU: 1012023 | Item ID: PKO 0782DPGCHR

Special Order Only
EPA Sealed Ratcheting Chrome Cap Fuel Fill w/ Pressure Relief Valve - Angled Neck

Perko

EPA Sealed Ratcheting Chrome Cap Fuel Fill w/ Pressure Relief Valve - Angled Neck

SKU: 456430 | Item ID: PKO 0660DPGCHR

Out of Stock
0663dpgblk of Perko Sealed Ratcheting Cap - Straight Neck

Perko

EPA Compliant Sealed Ratcheting Cap - Straight Neck

SKU: 1012055 | Item ID: PKO 0663DPGBLK

In Stock
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Ships immediately
Fuel Fill with Locking Cap

Perko

Fuel Fill with Locking Cap

Available in 2 options

In Stock
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Ships immediately
Gas Fills

Perko

Gas Fills

Available in 3 options

In Stock
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Ships immediately
Fuel System Locking Cap

Perko

Fuel System Locking Cap

Available in 2 options

In Stock
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Ships immediately
Waste Deck Fill for Hose

Perko

Waste Deck Fill or Replacement Cap

Available in 2 options

In Stock
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Ships immediately
Combination Gas Fill & Tank Vent For 2" Hose

Perko

0577 Vented Straight Neck Deck Fill - 2" Hose

SKU: 165794 | Item ID: PKO 0577G00CHR

Special Order Only
Deck Plates for Pipe

Perko

0528 Pipe Deck Fills - Gas, Diesel, Water, & Unmarked

Available in 19 options

In Stock
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Ships immediately
Deck Plates for Hose

Perko

0520 Hose Deck Fill - 1-1/2" Hose

Available in 4 options

In Stock
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Ships immediately
Deck Fill for Hose

Perko

Deck Fill for Hose

Available in 7 options

In Stock
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Ships immediately
Waste Deck Fill for Pipe

Perko

Waste Deck Fill for Pipe

Available in 2 options

In Stock
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Ships immediately
Chrome Waste Deck Fill for Hose

Perko

Chrome Waste Deck Fill for Hose

Available in 2 options

In Stock
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Ships immediately
Gas Fill for Hose

Perko

Gas Fill for Hose

SKU: 56134 | Item ID: PKO 0527G08CHR

Special Order Only
0579 Vented Angled Neck Deck Fill - 2" Hose

Perko

0579 Vented Angled Neck Deck Fill - 2" Hose

Available in 3 options

Special Order Only
0557dpgchr of Perko 0557 Water & Fuel Deck Fill - 1-1/2" Hose

Perko

Fuel and Water Fills

Available in 3 options

Special Order Only
0591 Vented Straight Neck Deck Fill - 1-1/2" Hose

Perko

0591 Vented Straight Neck Deck Fill - 1-1/2" Hose

SKU: 378771 | Item ID: PKO 0591DPDCHR

In Stock
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Ships immediately
Vented Fill for 1-1/2" Hose - Straight Neck

Perko

Vented Fill for 1-1/2" Hose - Straight Neck

Available in 2 options

In Stock
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Ships immediately
0552 Deck Fill - 1-1/2" Hose, with Resin Insert

Perko

0552 Deck Fill - 1-1/2" Hose, with Resin Insert

SKU: 389813 | Item ID: PKO 0552DP0STS

Out of Stock
Combination Gas Fill & Tank Vent

Perko

1319 Vented Straight Neck Deck Fill - 1-1/2" Hose

Available in 2 options

Out of Stock
BLK STRAIGHT GAS FILL VENT

Perko

0543 Vented Straight Neck Deck Fill - 1-1/2" Hose

SKU: 190511 | Item ID: PKO 0543DPGBLK

Special Order Only
Plastic Gas Fill

Perko

Plastic Gas Fill

Available in 2 options

In Stock
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Ships immediately
CHR BRZ ANGLED WATER FILL VENT

Perko

0590 Vented Angled Neck Deck Fill - 1-1/2" Hose

SKU: 172894 | Item ID: PKO 0590DPWCHR

In Stock
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Ships immediately
Gas Fills

Perko

Gas Fills

Available in 3 options

In Stock
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Ships immediately
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