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      Gas Caps & Deck Fills

      • Sea Dog Cast Stainless Hose Deck Fill - Body Only
        $35.49
        $25.99

        Sea Dog Keyless Fills are made from Cast 316 Stainles steel with the cap molded from fiberglass filled nylon. Each deck fill has a specail cap with a built-in key for easy cap removal. The hinged key can be locked in the upright position to open or close...

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      • Whitecap Stainless EPA Angled Pull Up Deck Fill - Waste
        $102.99
        $72.99

        Whitecap Stainless Steel Angled EPA Pull Up Deck Fill - Waste The Whitecap Stainless Steel Angled EPA Pull Up Waste Deck Fill is EPA approved for visual/audible open/close of cap. Features imprints and color coded international standard symbols...

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      • Whitecap Stainless Water Hose Deck Fill - Chain & Key
        $70.49
        $51.49

        Whitecap Stainless Water Hose Deck Fill - Chain & Key The Whitecap Stainless Water Hose Deck Fill is keyed and comes with a cap chain. The deck fill is imprinted with international standard symbols and color coded. Features: Flange: 3" Hose:...

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      • Whitecap 6394C Stainless Gas Hose Deck Fill
        $93.99
        $68.49

        Whitecap 6394C Stainless Gas Hose Deck Fill The Whitecap Stainless Gas Hose Deck Fill is imprinted with international standard symbols. Specifications: Hose: 2" Flange: 3-1/2" Angle: 90° Chain Included Fastener: 10 Material: 316 Stainless...

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      • Whitecap Stainless Steel Tapered Hose Deck Fill - Diesel
        $112.99
        $80.49

        Whitecap Stainless Steel Tapered Hose Deck Fill - Diesel The Whitecap Stainless Steel Tapered Hose Diesel Deck Fill features a large opening to allow for a better seal with a nozzle. Features: Flange: 3-1/2" Hose: 1-1/2" Angle: 90° Fastener:...

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      • Whitecap 6395C Stainless Diesel Hose Deck Fill
        $93.99
        $68.49

        Whitecap 6395 Stainless Diesel Hose Deck Fill The Whitecap Stainless Diesel Hose Deck Fill is color coded and imprinted with international standard symbols. Specifications: Hose: 2" Flange: 3-1/2" Angle: 90° Chain Included Fastener: #10 316...

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      • Whitecap Stainless Diesel Hose Deck Fill - Chain & Key
        $62.99
        $45.99

        Whitecap Stainless Diesel Hose Deck Fill - Chain & Key The Whitecap Stainless Diesel Hose Deck Fill is keyed and comes with a cap chain. The deck fill is imprinted with international standard symbols and color coded. Features: Flange: 3" Hose:...

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      • Whitecap Stainless Gas Hose Deck Fill - Chain & Key
        $70.49
        $51.49

        Whitecap Stainless Gas Hose Deck Fill - Chain & Key The Whitecap Stainless Gas Hose Deck Fill is keyed and comes with a cap chain. The deck fill is imprinted with international standard symbols and color coded. Features: Flange: 3" Hose:...

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      • Perko Gas Tank Vent w/Swivel Elbow
        $20.49
        $15.49

        Perko Gas Tank Vent w/Swivel Elbow This Perko gas tank vent sits at a 90° angle made of zinc alloy, with a black polymer cap. It also includes a removable 30 mesh stainless steel wire screen flame arrestor. The design of this ventilator allows the...

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      • Perko Plate Key for Deck Plates
        $19.99
        $10.49

        Deck Plate Key for Perko Deck Plate models 0552,m 0568, 0580, 0581 0582 and 0583. Also fits with Perko 1 1/4" and 11/2" Deck Plates and many other "Slot" type opening decl plates. Black Plastic 2 Holes for key chain Center to Center of lugs 1...

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      • Perko Replacement Cap with VPR
        $63.99
        $47.99

        Perko Replacement Cap with VPR This Perko replacement gas cap with VPR is EPA compliant sealed. It is built from black polymer, and comes with an O-ring and retainer. Made for 1-1/2" fills for hose.

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      • Whitecap Stainless Waste Hose Deck Fill w/Key
        $102.99
        $74.99

        Whitecap Stainless Waste Hose Deck Fill w/Key The Whitecap Stainless Waste Hose Deck Fill is keyed and is imprinted with international standard symbols and color coded. Features: Flange: 3" Hose: 1-1/2" Angle: 90° Fastener: #10 Chain not...

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      • Perko Angled Neck Vented Fill for 1-1/2" Hose
        $50.99
        $37.99

        Perko Angled Neck Vented Fill for 1-1/2" Hose This angled neck vented fill gas cap from Perko has a black polymer cap, body, and strap. No ground wire is required for this item. Specifications: Fits hose size: 1-1/2" Fits vent hose: 5/8" O.D...

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      • Perko Straight Neck Vented Fill - for 1-1/2" Hose
        $38.99
        $28.99

        Perko Straight Neck Vented Fill - for 1-1/2" Hose Made from white polymer. Straight neck, with an integral tank vent with flame arrestor, and a flip top cap. No ground wire required. Specifications: For Hose Size: 1-1/2" For Vent Hose Size:...

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      • Perko Gas Fill for 1-1/2" Hose
        $15.99
        $12.49

        Perko Gas Fill for 1-1/2" Hose This Perko gas fill has a chrome plated zinc alloy flange, and a black polymer cap with strap. Included is the grounding screw and cap retainer and gasket. Specifications: For Hose Size: 1-1/2" O.D. Flange:...

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      • Whitecap 1-1/2" Gas Hose Deck Fill w/Splash Shield
        $115.49
        $85.49

        Whitecap 1-1/2" Gas Hose Deck Fill w/Splash Shield This Whitecap gas hose deck fill is made from 316 stainless steel and is designed for use in both fresh and saltwater environments. Accepts hoses up to 1-1/2" and requires no deck fill key to open...

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      Boat Gas Caps

      Some boat owners will take the trouble to use fuel additives to protect their gas from deteriorating, but overlook a leading cause of fuel contamination: water seeping in from failed boat gas caps. Since these components are your fuel line (and engine’s) first line of defense, it makes sense to ensure that they are in good working order. Make checking your boat’s gas cap part of your pre- and post-trip maintenance. Since rubber components like O-rings degrade over time, it is important to check your gas cap after every trip and replace the gas cap’s rubber parts once a year.

      Need boat gas cap replacement parts? Wholesale Marine has a great selection! We carry caps from all the best brands like Attwood, Davis Instruments, Moeller Marine, Perko Marine, and Sea Dog, and An economical choice is Perko’s Vented Fill, for gas only. Thinking of upgrading from plastic to metal?Sea Dog offers a Cast Stainless Fuel Deck Fill with Deck Key also at an affordable price that accepts a standard 1-½” fuel hose.

      Got a Question? Ask the Pros at Wholesale Marine

      Did you know that there are replacement inserts for your gas cap? This way you’ll save money and extend your gas cap’s service life. Perko has a replacement a href="https://www.wholesalemarine.com/perko-fuel-fill-locking-insert.html">Fuel Fill Locking Insert for just that purpose. Concerned about someone siphoning your tank? Perko also offers Replacement Locking Gas Caps to thwart fuel thieves!  While you’re at it, stock up on Sea Dog O-Rings so you’ll always have spares on hand.

      Turn to Wholesale Marine whenever your boat requires a replacement part or upgrade.Give us a call and be sure to ask about the special programs we have for our customers including flat rate shipping for $6.99 and our Captain’s Club Rewards Program for great discounts on future Wholesale Marine purchases. We’re here Monday through Friday from 9:00 AM until 6:00 PM EST at (877) 388-2628.