Answering your search for durable, reliable outboard motor fuel lines, this guide highlights five top options. Each product is suited to different user needs—from casual boaters to frequent RV and tractor users. Below is a quick at-a-glance table to compare core details and ideal buyers.
| Product | Diameter | Length | Best For | Notes |
|---|---|---|---|---|
| 3/8″ ID | 6 ft | Boats, RVs, and small engines | Dual check valves for versatile priming | |
| iFJF 32-858104K08 | 5/16″ ID | 10 ft | Yamaha/Mercury/Jonhson/OMC outboards | Includes primer bulb and tank connector |
| Attwood 93806MUS7 | 3/8″ ID | 6 ft | Marine engines needing sprayless connector | Low-permeation hose, high-temp rated |
| BARTOO 6FT Fuel Line Assembly | 3/8″ ID | 6 ft | Boats, RVs, tractors, caravans | Includes free primer bulb and clamps |
| Universal 5/16″ 8mm Fuel Line (YIENAKFUN) | 5/16″ ID | 6 ft | General marine and outdoor equipment | Wide compatibility, steel hose clamps |
For quick navigation, click the product headings below to jump to full details, features, and buyer guidance.
TIHOOD 6FT Fuel Line Assembly
Overview: This universal fuel line uses a 3/8 inch inner diameter hose with a 6-foot length. It is compatible with ethanol-blended fuels and features a low permeability material to reduce fuel evaporation. The kit includes steel hose clamps and a primer bulb for versatile priming orientations due to dual check valves. Best for: boaters and RV owners seeking a long, flexible line with reliable priming in multiple setups. Caution: Confirm that your engine and fuel system fittings align with 3/8″ ID hoses, and beware of extended direct sun exposure, which may impact rubber longevity.
Key Features
- 3/8″ inner diameter, 6 ft length
- Compatible with ethanol blended fuels
- Low permeation material minimizes fuel loss
- Dual check valves for multi-orientation priming
iFJF 32-858104K08 Outboard Fuel Line Kit
Overview: A 10-foot, 5/16-inch ID fuel line designed as a replacement for a range of Yamaha, Mercury, Johnson, and OMC outboards from the late 20th century. It includes a primer bulb and a tank quick female connector. Best for: owners of older Yamaha and Mercury/Johnson engines needing a longer line with compatible fittings. Caution: Some newer engines (60 hp and above) may not accommodate an external fuel line from this kit.
Compatibility Highlights
- Suitable with many 4 hp–200 hp outboards from several brands
- Careful cross-reference with listed part numbers for correct fit
Attwood 93806MUS7 Marine Fuel Line Kit
Overview: This kit features Attwood’s sprayless fuel connector designed to avoid fuel sprays when connecting pressurized lines, paired with a low-permeation primer bulb that delivers more fuel output than many competitors. It includes a 3/8-inch hose rated for high temperature. Best for: boaters needing a safer, spray-free connection and reliable priming with improved fuel delivery. Caution: Ensure your engine’s fuel line sizing matches 3/8-inch hoses and that any high-temperature exposure remains within recommended limits.
What Sets It Apart
- Sprayless connector for safer operation
- 60% more fuel output due to advanced primer bulb
- Low-permeation hose resists fuel evaporation
BARTOO 6FT Fuel Line Assembly
Overview: A universal 6-foot, 3/8-inch ID fuel line set that includes a premium rubber primer bulb and 360° stainless steel hose clamps. It is designed for universal use across boats, RVs, tractors, and caravans. Best for: users needing a flexible, long-running line with robust clamps and an included primer bulb. Caution: This kit does not include engine or tank fittings, so verify compatibility with your existing hardware.
Why This Is a Strong All-Rounder
- Includes primer bulb and stainless clamps
- Low permeation material reduces evaporation
- Suitable for ethanol-blended fuels
YIENAKFUN Universal 5/16″ Fuel Line Assembly
Overview: A 6-foot universal fuel line with 5/16-inch ID and a 7/16-inch outer diameter designed for ethanol-blended fuels. It includes a primer bulb and steel hose clamps. Best for: general marine use and outdoor equipment that require a versatile 6-foot line. Caution: Ensure your engine’s fittings match the 5/16-inch ID hose and clamp style.
Key Benefits
- Premium rubber construction
- Low permeation to minimize evaporation
- Wide applicability beyond boats, including RVs and tractors
Buying Guide: Key purchase considerations for outboard fuel lines
Choosing The Right Fuel Line: Practical Questions And Answers
- What diameter do I need? Consider your engine’s fuel inlet size and existing hose fittings. Typical sizes are 3/8″ and 5/16″ ID. Match the hose ID to avoid leaks or restricted flow.
- Is length important? Longer lines give flexibility for mounting and routing, but may add more fuel line surface area for evaporation. Choose a length that reaches from tank to engine with a little slack for movement.
- Are ethanol blends an issue? Look for low-permeation materials designed to resist ethanol-induced degradation and evaporation.
- Is a primer bulb necessary? A primer bulb helps with quick starts after storage. Some kits include a premium bulb designed for higher fuel output.
- Should I choose sprayless connectors? If you want safer handling when connecting lines to a pressurized system, a sprayless connector reduces fuel spray risk.
- Does it include clamps and fittings? Some kits come with stainless clamps and primer bulbs; others require separate purchases for engine fittings. Verify compatibility with your hardware.
Buying Tips For Marine Fuel Lines
- Check compatibility with your engine model and year range, especially for older outboards.
- Prefer low-permeation hoses to minimize fuel evaporation and odor inside storage spaces.
- Look for corrosion-resistant clamps and metal parts to withstand marine environments.
- Consider the store’s return policy if you discover mismatched fittings after purchase.
Frequently Asked Questions
- Q: Can I run ethanol fuel through any fuel line? A: Most lines are designed for ethanol blends, but always verify the specified compatibility for your exact blend and engine.
- Q: Do I need a primer bulb with every kit? A: Not always, but a primer bulb helps with easier starting and reliable fueling, especially after storage.
- Q: What hose diameter should I choose for a new installation? A: Choose the diameter that matches your engine’s inlet and existing hose fittings, typically 3/8″ or 5/16″ for many outboards.
- Q: Are these lines safe for high-temperature environments? A: Many line kits are rated for elevated temperatures, but confirm the rating (e.g., up to 100°C or higher) for your use case.
- Q: Do these kits include all engine fittings? A: Some kits include hoses, primer bulbs, and clamps, but engine/tank fittings may require additional parts.