This filler moves the fuel fill to the inside box panel of a 1967–1987 Chevy or GMC bed instead of sitting flush in the middle of the bed floor. It is an affordable and convenient spot, and it keeps the filler out from underfoot.
Features
- Raw 18 gauge mild steel, pre-formed and tacked together in case slight modifications are needed for your application.
- Weld it in, or screw it in with the supplied hardware.
- Includes our 316 stainless filler neck with a polished face and a laser-engraved LS logo.
- Flip-up cap for keyless opening and closing, with a stainless steel retaining chain so the cap stays with the truck.
- Flange with three tapered mounting holes, and stainless steel mounting hardware.
Filler neck dimensions
- Flange diameter 2-15/16".
- Neck diameter 1-1/2".
- Neck length 2-1/4".
Choose your option
- Filler neck: standard, or billet Easy Fill
- Panel: not pre-welded, or fully pre-welded
Fitment notes
A universal fill tube is required to join the neck to your tank. We recommend a side fill tank, 1.5" diameter, which you can source from a local parts store.
Fits these trucks
1967–1987
Not sure this is the right part for your truck? Send us your year, make and model and we will confirm the fit before you order.
Specifications
- Part number
- 6787IBPF
- Brand
- LS Fabrication
- Interior / Exterior
- Exterior
- Material
- Aluminum Sheet Metal, Billet Aluminum
- Weight
- 0.8 kg
The panel welds in, or screws in with the supplied hardware. It ships pre-formed and tacked together, so there is room to adjust it if your bed needs it.
You will need a universal fill tube to join the neck to the tank. A side fill tank is what we recommend, 1.5" diameter.
19 reviews for Inside Box Panel Fuel Filler – 67-87 GMC Chevy Truck


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Great product fits good.
easy to purchase from, shipped quick and the fuel filler is great quality