Qonsy Fuel Line with Primer Bulb 5/16" (8mm) 6ft — Low-Permeation Rubber for Outboard Motors

Qonsy 5/16" (8mm) fuel line assembly with primer bulb is a 6-foot universal rubber fuel hose kit designed to transfer gasoline, diesel and other liquids safely and reliably for outboard motors and small engines.

Whether you’re moving fuel from a portable tank to an outboard, draining an old mower, or siphoning liquid for maintenance, this Qonsy fuel line kit combines a hand primer bulb and two hose clamps with a low-permeation rubber hose sized for common small-engine fittings. Built to accept ethanol-blended fuels and resist evaporation, the assembly aims to make fuel transfer quick, controlled and mess-free while fitting many recreational and yard machines.

How does this fuel line fit my outboard or small engine?

The hose inner diameter is 5/16" (8mm) with an outer diameter of 7/16" (12mm), which matches many portable tank and carburetor fittings used on outboards, jet skis, lawn tractors and similar equipment. The 6-foot length gives flexibility for routing between tanks and engines without kinking.

• Inner diameter: 5/16" (8mm) for common fuel fittings
• Outer diameter: 7/16" (12mm) for secure clamp fit
• Length: 6 feet (universal reach for most setups)
• Includes two hose clamps to fasten to fittings securely

What makes the Qonsy primer bulb and hose suitable for ethanol fuels?

This rubber assembly is formulated with low-permeation materials that reduce fuel vapor loss and resist breakdown from ethanol blends. That improves longevity and keeps pumps and engines supplied with fuel rather than losing pressure or performance to evaporation.

• Low-permeation rubber limits fuel evaporation
• Compatibility designed for ethanol-blended gasoline
• Durable construction reduces swelling and cracking
• Primer bulb delivers positive suction for quick priming

How easy is it to install and use the siphon pump and primer bulb?

Installation is straightforward: cut to required length if needed, attach hose ends to tank and engine fittings, and tighten the provided clamps. Operating the hand primer bulb draws fuel quickly without electrical power, so you can prime carburetors or transfer fuel on the dock, in the garage or out in the field.

• Simple push-on connections and clamp-secured fittings
• Hand primer bulb supplies instant suction—no tools required
• Works for pumping fuel from portable tanks and into engines
• Can be trimmed to fit specific installations

What fluids and machines can this hose handle?

The Qonsy assembly is designed for gasoline, diesel and many other non-corrosive liquids commonly used around recreational vehicles and yard equipment. It’s a versatile option for boat outboards, ATVs, lawn mowers, snow blowers and small tractors where a 5/16" line is appropriate.

• Compatible with gasoline and diesel (including ethanol blends)
• Suitable for boats, jet skis, RVs, ATVs, lawn tractors and mowers
• Also useful for siphoning fuel during storage or maintenance
• Not intended for high-pressure fuel-injection systems

Who is this for? DIY boat owners, marina technicians, RV and lawn-equipment operators who need an affordable, universal-length fuel transfer solution will find this Qonsy kit useful. It’s targeted at people who want a simple hand-priming option to move fuel, prime carburetors, or drain tanks without electric pumps—especially where ethanol-compatible materials and secure clamping are important.