T-H Marine Gen III Fuel Line Assembly | 7 ft 3/8 in

Fuel line is one of those parts nobody thinks about until it lets you down. It cracks, it weeps at the fittings, it hardens up and won't hold a clamp anymore. Then you're stranded at the ramp with a motor that won't catch. This T-H Marine Gen III Universal Fuel Line Assembly replaces the whole run in one go. You get 7 feet of kink-free hose, a primer bulb already fitted, and two stainless steel clamps in the box. Everything from the tank to the motor, ready to rig.

The hose is 3/8 inch inside diameter. That's the standard size for the vast majority of portable and built-in outboard fuel systems, so it drops right into most setups without an adapter. The kink-free construction is the part that earns its keep. Regular fuel line loves to collapse on a tight bend, and a collapsed line starves the motor at exactly the wrong moment. This hose holds its shape better through the turns you can't avoid behind a fuel tank.

It's also EPA approved. In plain terms, that means it's a low-permeation hose built to keep fuel vapor from seeping through the wall. That matters for two reasons. One, it's what the regulations require on modern boats. And two, low-permeation hose stands up to today's ethanol-blended pump gas a lot better than the old rubber line did. If you've ever pulled a hardened, gummy fuel line off a motor that ran E10, you know exactly why this matters.

Buying the complete assembly saves you the fiddly work of sourcing hose, a bulb, and clamps separately and hoping the barb sizes all match up. It's already put together as a matched Gen III kit, so the primer bulb, the hose, and the clamps are sized to work together right out of the bag. That's one less thing to second-guess on a job where a leak isn't just an inconvenience. A weeping fuel connection in a closed bilge is a real fire and fume risk, so doing it once with the right parts is worth it.

On fit, 7 feet is a good match for tiller-handle outboards in the 9.9 to 25 horsepower range, the kind you'll find on 14 to 16 foot skiffs, jon boats, and small tenders. On a bigger center console, say 20 feet and up, you may need to add an extension to reach a transom-mounted tank. Before you order, take a look at the barb on your fuel tank nipple. Most take a 3/8 inch hose directly, but a few tanks use an odd nipple size and want a step-up barb adapter to seal properly.

Install is straightforward. Route the hose with a nice wide radius instead of forcing it into a tight 90 degree turn, and support any long runs so the line isn't hanging on the fittings. Snug both stainless clamps down firmly at the barbs. If you run in salt water, give the clamps and fittings a fresh-water rinse now and then and check them at the start of each season. Hardware lives a hard life on a boat, and two minutes of inspection saves you a breakdown.

The universal primer bulb lets you hand-prime fuel up to the carburetor before you crank, which is how you get a cold motor to fire on the first couple of pulls. Primer bulbs are a wear item, especially on ethanol fuel in warm climates, so plan to replace the bulb if it ever gets stiff, cracks at the seam, or won't hold pressure. Store the assembly out of direct sun when it's off the boat and it'll stay flexible a lot longer. For the money, this is a clean, complete way to put a fresh, safe fuel line on your rig.