ATI FUEL TANKS FNA1.0 1" ALUMINUM ADAPTER WITH TWO 3/8 HOSE BARBS (FITS MOST GAS TRUCKS)

ATI FNA1.0 is a 1" aluminum filler-neck adapter with two 3/8" hose barbs designed for gasoline truck applications. It’s commonly used to plumb an inline pump feed and a return line when installing a gasoline auxiliary/refueling setup.

Key Features

• 1" OD filler-neck adapter body, aluminum construction.
• Two 3/8" hose barbs: one for pump pickup/feed, one for return line.
• Designed to fit most gasoline truck filler necks (verify neck size and clearance).
• Pairs well with ATI gasoline hose & clamp kits for a clean install.

Fitment

Fits most gasoline truck filler necks that accept a 1" OD adapter. Always verify your vehicle’s filler-neck diameter and available space before installation.

What’s Included

• ATI FNA1.0 1" aluminum filler-neck adapter with two 3/8" barbs

Compliance & Safety

California Proposition 65: This product may contain chemicals known to the State of California to cause cancer or reproductive harm. See www.P65Warnings.ca.gov.

FAQ

What do the two 3/8" barbs do?

One barb typically feeds an inline gasoline pump (pickup) and the other returns fuel back to the tank/filler neck in an auxiliary setup. 

Will this fit my truck?

It’s designed to fit most gasoline truck filler necks that accept a 1" adapter. Measure your neck OD and check space around the fill area to confirm. 

Is it aluminum?

Yes—this adapter is manufactured from aluminum for durability and corrosion resistance.

Do I need extra parts to install it?

Most installs also use gasoline-rated hose and clamps to connect the barbs to your pump/return lines (often sold as a kit).