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Fuel Tanks & Systems

      • Perko Chrome Bronze Replacement Gas Cap with Chain
        List Price: $55.49
        Starting At: $34.99

        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.

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      • Perko Vented Gas Deck Fill & Tank Vent
        List Price: $31.99
        Starting At: $22.99

        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.

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      • Perko Vented Fills for 1.5" Hose - 35° Angled Neck
        List Price: $31.99
        Starting At: $22.99

        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...

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      • Perko Chrome Gas Deck Fill with Black Plastic Cap and Flange
        List Price: $27.49
        Starting At: $19.99

        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 :...

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      • Perko Chrome Clam Shell Vent
        List Price: $8.45
        Starting At: $5.99

        Perko Chrome Clam Shell Vent Perko clam shell vents are ideal for many applications, from covering vent holes for battery boxes, water tanks, and fuel tanks to venting engine compartments. Made of chrome plated brass. Each is pre-drilled for...

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      • Perko Gas Tank Vent with Rotating Barbed Elbow
        List Price: $20.99
        Starting At: $15.49

        Gas Tank Vent with 90 degree swivel elbow. Chrome plated zinc alloy cap with zinc alloy elbow. Black plastic splash guard. Removable 30 mesh stainless steel wire screen flame arrestor. Design allows elbow to be rotated to any position. Hose size 5/8"...

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      • Perko Black Plastic Marine Deck Plate Key
        List Price: $5.99
        Starting At: $3.99

        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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      • Perko Vented Gas Fill for 1.5" Hose - Straight Neck
        List Price: $64.49
        Starting At: $46.49

        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...

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      • Perko Replacement Gas Cap, Black Plastic
        List Price: $12.99
        Starting At: $9.49

        Perko non-locking plastic gas cap. Features keyless easy to use tabs. For use with perko 1313 and 1413 deck fills. Contains just the black cap; Not the fill neck

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      • Perko Replacement Locking Gas Cap
        List Price: $43.99
        Starting At: $31.49

        Fuel System Locking Cap for 1-1/2" Non-Vented Fills. Black Plastic with Gasket Built in Lock Cylinder Fits PERKO Fills 0520, 0527, 0528, 0557, 0599 and 1270

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      • Perko Locking Gas Deck Fill for 1-1-2" Hose
        List Price: $64.49
        Starting At: $46.49

        Locking deck fill with black plastic splash guard along with cap and strap. Locking cap has cover for the key slot. Chrome plated zinc alloy. Includes 2 keys, also requires grounding per U.S.C.G. requirements. TECH INFO: For Hose Size: 1-1/2" O.D...

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      • Perko Fuel Fill Locking Insert
        List Price: $45.49
        Starting At: $28.49

        Perko Fuel Fill Locking Insert Perko fuel system locking insert for use with 1-1/2" vented fills. This locking insert fits most Perko vented fills and features a polymer body with zinc alloy lock cylinder. A dual purpose key opens the fill cap and...

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      Marine Gas Tanks

      For filling and maintaining your boat’s fuel tank systems, turn to the professionals at Wholesale Marine. We carry an extensive line of boat gas tanks from leading manufacturers for both inboard and outboard engine fuel tank systems. Whether you need a fuel filter, a fuel pickup tube, a funnel for pouring, a portable fuel tank, a complete fuel line assembly, hoses and connectors, senders and gauges, a replacement tank, fuel additives, gas caps and deck fills, or just a 14 gallon jerry can by Flo-N-Go, we have you covered. If you are not exactly certain about what you need, speak with our professional staff for solid advice.

      Regardless of its engine, every craft will have a permanent fuel tank below the deck with lines running to either its outboard or inboard engine. Fuel lines require routine maintenance. Wholesale Marine recommends using a fuel line treatment product such as Stabil or StarTron. It’s ironic, but water is the enemy of most boat systems and this is especially true of the fuel system. To maintain your permanent fuel tank (these are also known as boat gas tanks), here are some helpful tips from Wholesale Marine to protect your boat’s entire fuel system from costly repairs:

      1. Water in an engine’s fuel system leads to corrosion and corrosion leads to engine breakdown. Take action quickly when you first locate water in the fuel line or marine gas tank to possibly avoid repair bills altogether.
      2. Water sits under the fuel in a separate layer. If you are offshore and discover water in your fuel and your filter bowl is less than a quarter full of water, drain it and change the filter immediately. Then head in with caution.

      3. Gas inboards require metal filter bowls. Open the valve from underneath, and be sure to reinstall the safety plug in the drain valve

      4. Marine Gas Tanks’ Primary filters (the first filter after the fuel tank) block small amounts of water, but a larger amount might make it through. Be sure to check by dumping fuel from the secondary filter into a bucket and look for any water bubbles.

      5. Flush clean fuel from a jerry can through the engine to the connection at the high-pressure diesel injection pump or the gasoline injector supply rail. Be sure to use a filtered line. Most diesel engines have a manual fuel pump near the secondary filter or on the low-pressure supply pump. On gas engines, turn the ignition on and off to briefly run the fuel pump.

      6. If the motor stalled because of water, loosen diesel injector lines and turn the engine over with the starter until clean fuel runs through it. For gas engines, remove a sensor or plug at the far end of the supply rail and flush it there.

      7. Clean the tank and find the cause. Remove any sludge and inspect for deteriorated fuel fill-cap O-rings or gauge sender gasket seals. Replace as necessary. If your boat’s fuel line runs clean, your engine will as well. Therefore, it is very important that the fuel line be inspected routinely to avoid costly engine repairs caused by a faulty fuel line.

      We Stock Marine Gas Tanks at Wholesale Marine

      Should yours need replacement, know that Wholesale Marine stocks a large selection of below deck boat gas tanks and fuel system parts. If you are not sure what tank you need, give us a call. We’re boating enthusiasts, too and want you to enjoy your life on the water as much as we do. Call us: (877) 388-2628, Monday through Friday, 9:00 AM until 6:00 PM, EST.