Choosing the right fuel line matters more than most boat owners realize. A well-matched assembly helps your outboard start easier, run more consistently, and stay safer on the water.
Below, we narrow the field to dependable options for different engine sizes, connector types, and hose diameters so you can find the best fit fast.
Best 10 Outboard Motor Fuel Line Assembly Picks for 2026
Value Marine Setup
BARTOO 6FT Nylon Braided Fuel Line
- 6 ft 3/8 in hose with primer bulb
- Ethanol-compatible low-permeation design
- Universal fit; fittings sold separately
Best For: Boat owners who need a universal fuel line assembly
Sprayless Connector Kit
Attwood 6-Foot 3/8-Inch Marine Fuel Line
- Sprayless connector helps reduce fuel spray
- 3/8-inch hose resists kinking and hardening
- Includes tank and engine fittings
Best For: Mercury boat owners wanting a complete connector kit
Compact Universal Choice
TIHOOD 6FT 5/16-Inch Fuel Assembly
- 5/16-inch 6 ft universal hose
- Dual check valves aid priming
- No engine or tank fittings included
Best For: Anyone needing a compact universal fuel assembly
OEM-Style Engine Match
Attwood Johnson/Evinrude 6-Foot Fuel Line
- Built for Johnson and Evinrude engines
- Includes tank and engine fittings
- EPA and CARB compliant low-permeation materials
Best For: Johnson and Evinrude owners needing an exact-fit kit
Universal Pick
6FT 5/16in Fuel Line with Primer Bulb
- 6 ft universal hose with 5/16-inch ID
- Low-permeation rubber for ethanol-blended fuel
- Primer bulb check valves help with priming
Best For: Boat and RV owners needing a general-purpose fuel line assembly
Marine Runner
7FT Nylon Braided Fuel Hose with Bulb
- 7 ft nylon-braided hose for extra reach
- Includes primer bulb and stainless steel clamps
- Ethanol-compatible low-permeation materials
Best For: Marine buyers wanting a longer braided fuel hose assembly
High-Flow Choice
3/8in Marine Fuel Line Assembly
- Larger 3/8-inch ID for greater fuel flow
- Includes primer bulb and stainless steel clamps
- Built for OMC outboard fuel flow needs
Best For: Outboard owners who want a higher-flow marine fuel line
Universal Marine Pick
3/8 Inch 6FT boat fuel line with primer bulb
- 6-foot hose with 3/8-inch inner diameter
- Low-permeation rubber for ethanol blended fuels
- Includes primer bulb and steel clamps
Best For: Universal marine and RV fuel line setups
Clamp-Ready Universal Line
- 6-foot universal hose with 3/8-inch ID
- Dual check valves for priming support
- Includes primer bulb and stainless clamps
Best For: Standard marine fuel line replacement
Smaller-Diameter Option
Tnisesm 5/16" 6FT Fuel Line Assembly
- 5/16-inch inner diameter for smaller setups
- Includes snap-on connector and primer bulb
- 304 stainless steel ear clips
Best For: Smaller marine fuel line applications
Value Marine Setup – BARTOO 6FT Nylon Braided Fuel Line
If you need an outboard motor fuel line assembly that covers the basics well, this BARTOO kit is a straightforward universal option. It comes with a 6-foot 3/8-inch hose, primer bulb, and stainless steel hose clamps, and it’s built for ethanol blended fuels with low-permeation material to help reduce fuel evaporation.
Best For: Boat owners, RV users, and anyone who wants a simple universal fuel line assembly without engine- or tank-specific fittings.
Pros:
- Includes 6 ft of 3/8-inch fuel hose, primer bulb, and 360° stainless steel clamps
- Compatible with ethanol blended fuels
- Low-permeation construction helps limit fuel evaporation
- Universal design fits boats, RVs, tractors, and caravans
Cons:
- Does not include engine or tank fittings
- Rubber construction should not be stored in direct sunlight or rough environments
This is a practical pick if you already know your fittings and want a basic, fuel-compatible line assembly for everyday marine use.
Sprayless Connector Kit – Attwood 6-Foot 3/8-Inch Marine Fuel Line
This Attwood outboard motor fuel line assembly is a strong choice if you want a complete marine kit with engine and tank fittings included. It uses a 3/8-inch low-permeation hose, a multi-layer primer bulb, and Attwood’s sprayless connector to help reduce fuel spray during connection and disconnection.
Best For: Mercury owners who want a ready-to-use fuel line kit with sprayless connections and matched fittings.
Pros:
- Includes sprayless connector to help prevent dangerous fuel sprays
- Multi-layer primer bulb is rated for 60% more fuel output than competitors
- 3/8-inch low-permeation hose resists kinking and hardening
- Compatible with ethanol blended fuels and Mercury brand engines and tanks
Cons:
- Designed around Mercury compatibility, so it may not suit every engine setup
- Higher-spec connector system may be more than a basic replacement needs
If you want a marine fuel line assembly with the safety and convenience of a sprayless connector, this kit is one of the more polished options in the group.
Compact Universal Choice – TIHOOD 6FT 5/16-Inch Fuel Assembly
For a smaller-diameter outboard motor fuel line assembly, this TIHOOD kit offers a 5/16-inch hose with a primer bulb, steel hose clamps, and low-permeation material. It’s aimed at universal use with boats, RVs, tractors, and caravans, and it supports ethanol blended fuels.
Best For: Users who need a universal 5/16-inch fuel line assembly and do not need engine-specific fittings.
Pros:
- 6-foot 5/16-inch hose works as a compact universal line
- Compatible with ethanol blended fuels
- Low-permeation material helps prevent fuel evaporation
- Dual check valves allow priming in multiple orientations
Cons:
- Does not include engine or tank fittings
- Should not be stored in direct sunlight or rough environments
This is a sensible pick if your setup calls for a 5/16-inch hose and you want a simple marine fuel line assembly with broad compatibility.
OEM-Style Engine Match – Attwood Johnson/Evinrude 6-Foot Fuel Line
This Attwood outboard motor fuel line assembly is built for Johnson and Evinrude applications and includes both tank and engine fittings. It uses low-permeation materials, a sprayless connector, and a primer bulb designed for easier priming and consistent fuel flow, while meeting EPA and CARB requirements.
Best For: Johnson and Evinrude owners who want a compliant, engine-matched fuel line kit with fittings included.
Pros:
- Designed specifically for Johnson and Evinrude outboard engines
- Includes 6 ft of 3/8-inch hose with tank and engine fittings
- EPA and CARB compliant low-permeation construction
- Primer bulb and ethanol-resistant materials support easy fueling and durability
Cons:
- Engine-specific design is less universal than generic fuel line assemblies
- Compatibility is tied to OMC/Johnson/Evinrude-style fittings
For owners who want a proper match to their outboard setup, this kit stands out for its included fittings, safety-focused design, and compliance-minded materials.
Universal Pick – 6FT 5/16in Fuel Line with Primer Bulb
If you want a straightforward outboard motor fuel line assembly for general marine use, this 6-foot 5/16-inch option covers the basics well. It uses low-permeation rubber rated for ethanol-blended fuel, includes a primer bulb with check valves, and is sized for a wide range of boats and other small equipment.
Best For: Owners who need a universal fuel line assembly for boats, RVs, and other gas-powered equipment.
Pros:
- 6 ft hose with 5/16-inch inner diameter for common fuel setups
- Low-permeation rubber helps reduce fuel evaporation
- Primer bulb check valves support priming in multiple orientations
- Works with boats, RVs, tractors, motorcycles, and more
Cons:
- Rubber construction should be kept out of direct sunlight
- Universal design does not include engine-specific fittings
This is a practical, no-frills fuel line assembly if you need a versatile replacement and value broad compatibility over specialty fittings. The 5/16-inch size and included clamps make it a solid everyday choice for many outboard and utility applications.
Marine Runner – 7FT Nylon Braided Fuel Hose with Bulb
This outboard motor fuel line assembly adds a nylon-braided hose and a rubber primer bulb for a sturdy, marine-ready setup. It is built with ethanol-compatible, low-permeation materials and includes stainless steel hose clamps, making it a strong option for common marine fuel transfer needs.
Best For: Buyers who want a 7-foot fuel line assembly with a braided hose and included bulb for marine use.
Pros:
- 7 ft hose gives a little extra reach compared with shorter assemblies
- Nylon-braided construction adds a tougher outer finish
- Includes a premium rubber primer bulb and stainless steel clamps
- Arrow on bulb shows fuel flow direction for easier setup
Cons:
- Universal design does not include engine or tank fittings
- Rubber components should be stored away from sunlight and high heat
For users who want a slightly longer marine fuel line assembly with a braided hose look and included hardware, this is a sensible pick. The directional bulb and ethanol-compatible materials make it a practical match for everyday boat fuel system maintenance.
High-Flow Choice – 3/8in Marine Fuel Line Assembly
If your setup needs a larger-diameter outboard motor fuel line assembly, this 3/8-inch option is built for greater fuel flow. It uses a 6-foot rubber line, a premium primer bulb, and stainless steel clamps, and it is described as meeting and exceeding fuel flow requirements for OMC outboards.
Best For: Boat owners who need a higher-flow fuel line assembly with a 3/8-inch hose diameter.
Pros:
- 3/8-inch inner diameter supports greater fuel flow
- Meets and exceeds fuel flow requirements for OMC outboards
- Includes primer bulb, rubber line, and stainless steel clamps
- Compatible with ethanol-blended fuels
Cons:
- Rubber construction should not be stored in direct sunlight or high heat
- Larger hose size may not suit every fuel fitting setup
This is the strongest fit in the group if flow capacity is your priority. The larger hose diameter and marine-focused construction make it a practical outboard motor fuel line assembly for owners looking to support higher-demand fuel systems.
Universal Marine Pick – 3/8 Inch 6FT boat fuel line with primer bulb
If you need an outboard motor fuel line assembly that aims for broad compatibility, this 6-foot, 3/8-inch option is built around a universal layout with a primer bulb and steel clamps. It uses low-permeation rubber meant to work with ethanol blended fuels, and the check valves are designed to help priming in multiple orientations.
Best For: Boaters and RV owners who want a 6-foot universal fuel line with a primer bulb and standard 3/8-inch sizing.
Pros:
- 3/8″ inner diameter and 6-foot length suit many universal fuel setups.
- Compatible with ethanol blended fuels and designed to reduce fuel evaporation.
- Primer bulb check valves support priming in multiple orientations.
- Includes steel hose clamps for a more complete assembly.
Cons:
- Rubber construction should not be stored in direct sunlight or rough conditions.
- Only one size is listed, so fit still depends on your engine connection.
Overall, this is a straightforward pick if you want a common-size marine fuel line assembly with a primer bulb and broad vehicle compatibility. Its value is in the simple universal format rather than specialty features.
Clamp-Ready Universal Line – TIHOOD 6FT Fuel Line Assembly
This outboard motor fuel line assembly is a simple 6-foot, 3/8-inch hose setup with a primer bulb and stainless steel clamps. According to the product notes, the low-permeation rubber construction is intended for ethanol blended fuels, and the dual check valves help with priming in multiple orientations.
Best For: Buyers who want a standard 6-foot marine fuel line assembly with steel clamps and broad fuel compatibility.
Pros:
- Universal 3/8″ hose sizing with a 6-foot length.
- Compatible with ethanol blended fuels and designed to limit fuel evaporation.
- Dual check valves help priming without restricting flow.
- Stainless steel clamps are included.
Cons:
- Rubber product should not be stored in direct sunlight or high heat.
- No specialty fit information beyond the universal sizing is provided.
This is a practical, no-frills choice if your priority is a familiar universal assembly with a primer bulb and stainless hardware. It focuses on the basics rather than adding extra complexity.
Smaller-Diameter Option – Tnisesm 5/16" 6FT Fuel Line Assembly
If your outboard motor fuel line assembly needs a smaller hose size, this 5/16-inch, 6-foot option may be the better fit. It uses nitrile rubber fuel pipe construction, a snap-on connector, a primer bulb, and 304 stainless steel ear clips, with notes stating compatibility with ethanol mixed fuel and low-permeability material.
Best For: Users who need a 5/16-inch fuel line assembly with a connector and stainless steel ear clips.
Pros:
- 5/16″ inner diameter is available for smaller fuel line applications.
- Includes a snap-on connector for the assembly.
- 304 stainless steel ear clips add corrosion-resistant hardware.
- Built for ethanol mixed fuel with low-permeability material.
Cons:
- Shorter total length is listed as 6 feet / 6.88 ft in the notes, so verify fit carefully.
- Rubber construction should not be stored in direct sunlight or high temperature.
For owners who need the smaller 5/16-inch size, this assembly offers a useful combination of connector, primer bulb, and stainless hardware. It is best treated as a fit-first purchase where hose diameter matters more than extras.
How We Picked These Outboard Motor Fuel Line Assembly Options
We focused on assemblies that balance compatibility, build quality, and ease of use. Key checks included hose diameter, length, primer bulb quality, connector support, clamp hardware, and whether the kit suits common marine applications without unnecessary complexity.
Quick Comparison
For most buyers, the biggest differences come down to hose size and engine fitting compatibility. 5/16-inch kits are common for smaller outboards and many portable setups, while 3/8-inch assemblies are often better suited to higher-flow applications or specific engine requirements. Length also matters: 6-foot kits are versatile, while longer hoses can help in larger boats or less direct fuel-tank placement.
Key Buying Factors for an Outboard Motor Fuel Line Assembly
Hose Diameter and Fuel Flow
Match the hose diameter to your engine’s requirements. Too small can restrict flow; too large can complicate connections or create fitment issues. If your owner’s manual lists a recommended size, start there.
Connector Compatibility
The wrong connector is a common reason a fuel line kit fails to work as expected. Check whether the assembly is made for Mercury, Yamaha, Johnson/Evinrude, or universal use, and confirm both tank and engine ends before ordering.
Primer Bulb and Hose Construction
A good primer bulb should feel firm, seal properly, and restore fuel quickly after storage or maintenance. For the hose itself, look for marine-grade construction, braided reinforcement, and materials designed to handle ethanol-blended fuel where applicable.
Clamps and Assembly Hardware
Steel clamps and secure fittings help reduce leaks and air intrusion. This is especially important in a marine environment, where vibration and moisture can wear down weaker hardware.
Who Should Buy Which Outboard Motor Fuel Line Assembly?
If you want the safest path, choose a kit that matches your engine brand and hose size exactly. Universal kits are a smart choice for buyers replacing a worn line on a common portable outboard or RV-style fuel setup, especially when flexibility matters more than a brand-specific connector. If your priority is long-term reliability, pick an Outboard Motor Fuel Line Assembly with reinforced hose, a quality primer bulb, and corrosion-resistant hardware.
In short, the best choice is the one that fits your engine, your tank setup, and your fuel-flow needs without forcing adapters or guesswork.