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  • Shields Fuel Feed & Vent Hose Type A1

    Shields Fuel Feed & Vent Hose Type A1

    368 Series Fuel Feed and Vent hose is designed to resist permeation of alcohol-enhanced gasoline,...

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    Price: $27.81 to $40.42
  • Brass 3 Way Fuel Selector Valve

    Brass 3 Way Fuel Selector Valve

    Brass fuel selector valve for dual tank fuel lines. This 3-way ball valve selector has 3 ports of...

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    Price: $16.58
  • Racor Diesel Spin-On Series Replacement Filter Elements

    Racor Diesel Spin-On Series Replacement Filter Elements

    Racor diesel replacement filter elements work with Diesel Spin On Fuel Filter/Water Separators. The...

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    Price: $22.56 to $36.19
  • Seachoice Brass Male Hose Barb Fittings

    Seachoice Brass Male Hose Barb Fittings

    Threaded 3/8in and 1/4in NPT to male hose fittings for 1/4in, 5/16in and 3/8in ID. Brass....

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    Price: $2.99 to $5.40
  • Racor T-Handle Vacuum Gauge Kit

    Racor T-Handle Vacuum Gauge Kit

    The Racor T-Handle Replacement Vacuum Gauge Kit includes silicone dampened gauge 0-30 inHG lid...

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    Price: $81.24
  • Sierra Gasoline Fuel Water Separator Kits

    Sierra Gasoline Fuel Water Separator Kits

    Gasoline Fuel Water Separator kits remove particulate matter and water from marine gasoline fuel...

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    Price: $34.80 to $94.20
  • Racor Turbine Series Service Kits

    Racor Turbine Series Service Kits

    Racor Turbine Series fuel filter water separator service kits include replacement parts for the...

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    Price: $13.05 to $46.70
  • Trident Fuel Hose USCG Type A2

    Trident Fuel Hose USCG Type A2

    Trident Type A2 marine fuel hoses are wire reinforced with a thick tube and cover to resist...

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    Price: $97.88 to $326.52
  • Racor Fuel Filter Funnels

    Racor Fuel Filter Funnels

    Racor Fuel Filter Funnels feature rugged construction, a Teflon-coated stainless steel filter, a...

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    Price: $35.87 to $68.53
  • Racor Turbine Series Replacement Diesel Fuel Filter Elements

    Racor Turbine Series Replacement Diesel Fuel Filter Elements

    Racor Turbine Series Replacement Diesel Fuel Filter Elements are waterproof, rustproof, and dirt...

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    Price: $10.96 to $20.00
  • TH Marine Fuel Hose Rigging Installation Kit

    TH Marine Fuel Hose Rigging Installation Kit

    The TH Marine rigging installation kit features a fuel hose port that fits type A hoses. Split...

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    Price: $13.14 to $14.90
  • Seachoice Thru-Hull Vents

    Seachoice Thru-Hull Vents

    Seachoice Thru-Hull Vents have two vent holes, each of which are covered with a Monel wire mesh...

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    Price: $10.95 to $15.43
  • Groco 6 Port Fuel Valve

    Groco 6 Port Fuel Valve

    Groco 6 port fuel Valves are brass fuel valves that are used in dual tank fuels system that require...

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    Price: $10.30 to $319.15
  • Racor Fuel Separator Filter Elements for Diesel or Gasoline

    Racor Fuel Separator Filter Elements for Diesel or Gasoline

    Replacement fuel filter element for Racor diesel and gasoline fuel filters/water separatorss for...

    In Stock 

    Price: $23.52 to $33.42
  • Moeller Outboard Engine Low Perm Fuel Line Assemblies

    Moeller Outboard Engine Low Perm Fuel Line Assemblies

    Moeller Outboard Engine Low Perm Fuel Line Assemblies feature o-ring construction on all fittings...

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    Price: $39.02 to $55.24
  • Shields Fuel Fill Hose Type A2

    Shields Fuel Fill Hose Type A2

    Fuel fill hose is a high nitrile tube that is designed to attach your boat's deck fill to the fuel...

    In Stock 

    Price: $40.25 to $166.65
Items: 1 - 16 of 94 | Pages: 1  2  3  4  5  6  Next 
 

Fuel System Basics

Whether idling through the no-wake zone or cruising across the bay at full throttle, any engine relies on a steady stream of clean fuel. Selecting the appropriate fuel components is easy when armed with a little knowledge of the engine requirements. Engine size mainly determines the size of fuel components required. Well designed fuel systems are engineered to deliver sufficient fuel flow through the spectrum of engine speeds. Improper components may reduce fuel flow, and like a dam in a river, everything down stream becomes fuel starved, resulting in a rough running engine. Engines excel with quality fuel components like those made by Sierra, Racor and Attwood.

Crucial to fuel flow is a well maintained fuel filtration system. Properly sized filters should extract contaminants without restricting flow. Marine systems have two stages of filtration, the primary or pre-fuel filter and the secondary, or engine filter. The primary filter is first in line. Its task is to extract water and large particle contaminants, and is therefore serviced more often. Primary filter systems offer dramatically improved protection over a single filter system alone. If your inboard or outboard does not currently incorporate a primary filter, an aftermarket model can easily be installed. Be sure to select a primary filter (also called a fuel water separating filter) that is sufficient to handle the engine flow rate at full throttle. Racor and Sierra each offer a range of easily installed primary fuel/ water separating filters. Next in line are Secondary filters, typically located just before the fuel pump, carburetor or injectors. Secondary filters function as a last chance trap to rid fuel of grit and debris, and are usually specific to OM (Original Manufacturer) and engine model.

To fairly evaluate filter performance, consider not only the smallest particle size a filter extracts, but also the efficiency at which it filters. For example, take two 10 micron filters. Each may filter out 90 percent of all particles 10 micron or larger at half throttle, but when fuel flow accelerates, a high quality filter maintains efficiency while a lesser filter allows far more contaminants to pass through. The efficiency also drops when filters are left in service beyond their usable life. Spent filters not only lose the protective filtration features but also dam the river, starving the engine of fuel. A vacuum gauge installed on the filter will detect the pressure drop caused by a clogged filter.

To maintain a solid stream of fuel minus air and obstructions, use marine grade fuel line components. AWAB clamps are the best choice for complete clamping force to secure fuel hose to barb fittings. A vibration resistant screw and a non-perforated inner surface with rounded edges help this clamp achieve a hose-friendly leak-free seal. Use these clamps in conjunction with brass fuel line fittings to connect tank vents, fuel fill hose, deck fill plates, and fuel feed lines. Any new installation must include a fuel line shut off valve. To achieve maximum performance at higher speeds or engine loads, all fittings selected should maintain adequate ID (internal diameter) throughout the fuel line. For outboard systems, Sierra offers complete replacement fuel lines to fit Mercury, Johnson, Evinrude, Honda and a host of others. They also offer replacement bulbs and connectors to keep outboard fuel lines primed and running.

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