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Boat Deck Fills, Gas Caps & Tank Keys

95 results

Protect boat investments by installing secure, EPA-compliant deck fills from Fisheries Supply, leading supplier of marine gas caps and stainless steel boat water intakes preventing spills, leaks or theft. Discover combination cap/vents plus spare gas cap keys simplifying access and locking marine gas caps deterring siphoning by opportunistic thieves targeting isolated boats. Whether you need sealed, gasketed stainless intakes for freshwater tanks or vapor-tight diesel deck fills meeting USCG mandates, our representatives specify optimal parts compliant across applications - from sailboats to bass boats to pontoons. As specialists equipping boats of all sizes and purpose, Fisheries Supply stocks every deck fill configuration imaginable - including spare gas cap replacements clearly labeled by contents. Invest in durable, precision-built deck fills with fittings tested to maintain leak-free connections, providing proper ventilation while keeping contents safe from contamination. If you are also setting up the tank, browse our great selection of boat fuel tank vents.

CategoryBoat Plumbing Fixtures & Supplies
CategoryBoat Deck Fills, Gas Caps & Tank Keys
Show In-Stock Only

Hose Deck Fill - 316 S.S

Sea-Dog Line

Hose Deck Fill - 316 S.S

Available in 10 options

In Stock
Image coming soon

Perko

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

SKU: 457665 | Item ID: PKO 0781G00STS

In Stock
Deck Fill with Keyless Cap - Nylon

Sea-Dog Line

Deck Fill with Keyless Cap - Nylon

Available in 9 options

In Stock
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
Deck Fills with Slotted Caps

Sea-Dog Line

Deck Fills with Slotted Caps

Available in 4 options

In Stock
Image coming soon

Perko

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

SKU: 378771 | Item ID: PKO 0591DPDCHR

Out of Stock
EPA Compliant Vented Straight 1/4 Turn Deck Fill

White Water Marine Hardware

EPA Compliant Vented Straight 1/4 Turn Deck Fill

Available in 2 options

In Stock
1429 of Perko Flip Top Cap Fills

Perko

Flip Top Cap Fills

SKU: 456221 | Item ID: PKO 1429G00BLK

In Stock
SS GAS DECK FILL W/KEY 1-1/2IN BARB

Sea-Dog Line

Hose Deck Fill With Key

Available in 2 options

In Stock
Image coming soon

Perko

Perko Replacement Caps for Flush Style Deck Fills

Available in 11 options

In Stock
ALUMINUM FLIP TOP GAS FILL

Sea-Dog Line

Flip Top Gas Fill - Cast Aluminum

SKU: 206371 | Item ID: SDL 351800

In Stock
Image coming soon

Sea-Dog Line

Angled Hose Deck Fill

Available in 7 options

In Stock
Gas Fills

Perko

Gas Fills

Available in 3 options

In Stock
Image coming soon

Sea-Dog Line

Sea-Dog Replacement Deck Fill Caps

Available in 4 options

In Stock
EPA Compliant Vented Angled 1/4 Turn Deck Fill

White Water Marine Hardware

EPA Compliant Vented Angled 1/4 Turn Deck Fill

Available in 2 options

Out of Stock
Flip Top Gas Fill

Sea-Dog Line

Flip Top Gas Fill - Investment Cast Stainless

Available in 2 options

In Stock
Deck Fill with Guard

Sea-Dog Line

Deck Fill with Guard

Available in 2 options

In Stock
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
deck fill cap

Attwood

Replacement Deck Fill Cap & Chain

SKU: 63209 | Item ID: ATT 66074-3

In Stock
Fuel Fill with Locking Cap

Perko

Fuel Fill with Locking Cap

Available in 2 options

In Stock
Deck Fill with Keyless Cap - 316 S.S

Sea-Dog Line

Deck Fill with Keyless Cap - 316 S.S

Available in 4 options

In Stock
Pipe Deck Fill

Buck Algonquin

Pipe Deck Fill

Available in 7 options

In Stock
1-1/2IN HOSE BLK 35DEG GAS FILL/VENT

Perko

1318 Vented Angled Neck Deck Fill - 1-1/2" Hose

SKU: 131150 | Item ID: PKO 1318DPGBLK

In Stock
316 SS Cast Deck Fill Flip-Tab

White Water Marine Hardware

316 SS Cast Deck Fill Flip-Tab

Available in 6 options

In Stock
Image coming soon

Perko

EPA Compliant Sealed Stainless Ratcheting Scalloped Cap Angled Fuel Fill

SKU: 1003523 | Item ID: PKO 0782DPGSTS

In Stock
Deck Plate Fill Key

Sea-Dog Line

Deck Plate Fill Key

Available in 2 options

In Stock
357390 of Sea-Dog Line Emergency Deck Fill Plug - Bulks

Sea-Dog Line

Emergency Deck Fill Plug - Bulk

SKU: 1022856 | Item ID: SDL 357390

In Stock
0553dp0 of Perko Fuel Vent Surge Protector

Perko

Fuel Vent Surge Protector

SKU: 1017030 | Item ID: PKO 0553DP0

In Stock
Image coming soon

Perko

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

SKU: 377588 | Item ID: PKO 0780DPGSTS

In Stock
Waste Deck Fill for Pipe

Perko

Waste Deck Fill for Pipe

Available in 2 options

In Stock
Deck Plates for Pipe

Perko

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

Available in 20 options

In Stock
REPLACE. CAP FOR 351520-351523

Sea-Dog Line

Replacement Deck Fill Cap For SeaDog Deck Fills 351320 - 351323

SKU: 49337 | Item ID: SDL 351390-1

In Stock
Deck Fill for Hose

Perko

Deck Fill for Hose

Available in 7 options

In Stock
Image coming soon

Perko

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

SKU: 389813 | Item ID: PKO 0552DP0STS

In Stock
BLK ZINC LOCKING INSERT F/0540/0541

Perko

Fuel System Locking Insert - 0525

SKU: 168985 | Item ID: PKO 0525DP0BLK

In Stock
Fuel System Locking Cap

Perko

Fuel System Locking Cap

Available in 2 options

In Stock
0540dpdchr of Perko Diesel Fill

Perko

Diesel Fill

SKU: 1000944 | Item ID: PKO 0540DPDCHR

In Stock
Pipe Deck Fill - 316 S.S

Sea-Dog Line

Pipe Deck Fill - 316 S.S

Available in 5 options

In Stock
2IN BRZ DIESEL PIPE DECK PLATE

Buck Algonquin

Pipe Deck Fill - Diesel

SKU: 126194 | Item ID: B/A 00PDP200D

In Stock
REPLACEMENT CAP FOR 351750

Sea-Dog Line

Replacement Cap - for Hose Deck Fill With Splash Guard

SKU: 84245 | Item ID: SDL 351755-1

In Stock
357390 of Sea-Dog Line Emergency Deck Fill Plugs

Sea-Dog Line

Emergency Deck Fill Plug

SKU: 1022245 | Item ID: SDL 357390-1

In Stock
Push-Up Deck Fills

Whitecap Industries

Whitecap Deck Fills

Available in 5 options

In Stock
Image coming soon

Perko

0579 Vented Angled Neck Deck Fill - 2" Hose

Available in 3 options

Due to Extreme Lead Times Contact Customer Service for Options
Combination Gas Fill & Tank Vent

Perko

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

Available in 2 options

Out of Stock
0662 of Perko Angled Neck Cap Fill

Perko

Angled Neck Cap Fill

SKU: 1010757 | Item ID: PKO 0662G00BLK

Out of Stock
Image coming soon

Perko

0579 Vented Angled Neck Deck Fill - 2" Hose

Available in 3 options

Due to Extreme Lead Times Contact Customer Service for Options
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