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Gas Caps & Deck Fills

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      • Moeller Marine Chrome Fuel Deck Fill for 1-1/2" Hose
        $35.99
        $28.99

        Moeller Marine 035740-10 Chrome Fuel Deck Fill for 1-1/2" Hose For use with 1-1/2" I.D. fill hose. Designed with screw mount and splash lip Deck plate fill for gasoline. Cap attached with stainless steel cable. Requires bonding per U.S.C.G...

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      • Sea Dog O-Ring For 1-1/2" Deck Fill Caps
        $1.49

        Sea Dog O-Ring For 1-1/2" Deck Fill Caps Replacement o-ring for 1-1/2" deck fill caps.

        Out of stock

      • Perko Chrome Bronze Replacement Gas Cap with Chain
        $63.99
        $40.49

        Perko Chrome Bronze Replacement Gas Cap with Chain Chrome plated bronze spare gas cap with stainless steel bead chain for vented or non-vented, angled or straight. For use with Perko 0540 & 0541.

        Out of stock

      • Moeller Marine Low Profile Manually Vented Fuel Cap
        $18.99
        $14.49

        Moeller 621501-10 Low Profile Manually Vented Fuel Cap  The Moeller Low Profile Fuel Cap is a Tempo Style vented fuel cap designed for recreational boating. Direct factory replacement parts for your portable fuel tank Used for Topside/Portable...

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      • Perko Vented Gas Deck Fill & Tank Vent
        $37.49
        $26.99

        Integral tank vent with flame arrestor. No deck plate key or ground wire required. Black plastic with flip top cap. 2-7/16" neck length, 1-1/2" for fuel hose, 5/8" for vent hose.

        Out of stock

      • Sea Dog Stainless Steel Deck Plate Key
        $5.49
        $3.99

        Sea Dog Stainless Steel Deck Plate Key Sea Dog investment cast 316 stainless steel deck plate key for use with all fill caps with 1-3/16" holes on center. Fits all Sea Dog cast stainless deck fill caps part #s 351320-351331 and 351-350-351353.

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      • Attwood Replacement Boat Gas Cap and Chain
        $38.99
        $29.49

        Replacement Cap for gas, diesel and water hose deck fills. For 1-1/4" straight pipe threads. Highly polished finish. Flush cap is slotted for separate key and features an O-ring that seals the cap watertight. Cap is attached by a stainless steel beaded...

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      • Perko Chrome Gas Tank Vent with Black Plastic Splash Shield
        $23.49
        $14.99

        Chrome plated zinc alloy with black plastic splash guard Removable 30 mesh stainless steel wire screen flame arrestor Hose size 5/8" Maximum hull thickness 3/4"

        Out of stock

      • Perko Vented Fills for 1.5" Hose - 35° Angled Neck
        $37.49
        $26.99

        Perko Vented Gas Fill for 1.5" Hose - 35° Angled Neck Th Perko Vented Gas Fill is constructed of durable black polymer and features a 35 degree angled neck. This gas fill has an integral tank vent with an anti-surge valve. Deck plate key not...

        Out of stock

      • Perko Chrome Gas Deck Fill with Black Plastic Cap and Flange
        $31.99
        $22.99

        Deck fill with black plastic splash guard and cap with strap. Features key less, easy to use cap with tabs. Chrome Plated zinc alloy. Requires grounding per u.s.c.g. requirements. For Hose Size: 1-1/2" O.D. Flange: 3-1/8" Length of Neck :...

        Out of stock

      • Sea Dog Replacement Deck Fill Gas Cap- Red
        $9.49
        $6.99

        Sea Dog Replacement Deck Fill Gas Cap- Red Features: Fits Sea Dog brand 1-1/2" Deck Fills Cap molded from Fiberglass Filled Nylon The cap threads are 1-1/4" - 11-1/2 NPSM - Straight Gas, diesel and water caps include attachment chains Built-in key for...

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      • Perko Black Plastic Marine Deck Plate Key
        $6.49
        $4.99

        Black plastic deck plate key for deck plate size 1-1/4" and 1-1/2". The keys for 1" thru 1-1/2" deck plates have a 1 inch spade on handle that allows them to fit many other "slot" type opening deck plates.

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      • Sea Dog Cast Stainless Fuel Deck Fill with Deck Key
        $56.49
        $40.99

        Sea Dog Cast Stainless Fuel Deck Fill with Deck Key Features: Comes with Deck Plate Key Fits 1-1/2" Fuel Hose Labeled for Gas only The cap threads are 1-1/4" - 11-1/2 NPSM - Straight Investment Cast 316 Stainless

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      • Perko Vented Gas Fill for 1.5" Hose - Straight Neck
        $74.99
        $53.99

        Perko Vented Gas Fill for 1.5" Hose - Straight Neck The Perko 0541 series of vented fills are built to be durable and long lasting. This fill is marked for gas and features a 2-7/16" straight neck. Perko's 0541 series fills are constructed with a black...

        Out of stock

      • Sea Dog Flip Top Gas Fill
        $91.49
        $62.49

        Sea Dog Flip Top Gas Fill Features: Investment Cast 316 Stainless Fits 1-1/2" Fuel Hose

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      • Sea Dog Stainless Steel Multi-Function Marine Deck Plate Key
        $11.99
        $10.49

        The ultimate deck plate key will fit all Sea-Dog fuel fills as well as most others on the market. Also included on the key is a shackle key, bottle opener and a straight blade screwdriver, plus 5/16" hex head and 7/16" hex head wrench.

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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.