Frequently bought together
Description
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.
Truck compatibility and specs
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. Not sure what year your truck is? Decode its VIN.
Specifications
- Part number
- 6787IBPF
- Brand
- LS Fabrication
- Interior / Exterior
- Exterior
- Material
- Aluminum Sheet Metal, Billet Aluminum
- Weight
- 0.8 kg
Fits alongside
Most often bought with this part:
Installation
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.
Reviews
Customer reviews
What owners are saying
21

Common questions
Will it drop straight into my bed?
Expect slight modification. It ships in raw 18 gauge steel, pre-formed and tacked together (or fully pre-welded if you pick that option), so it can be adjusted to your own bed before it goes in for good.
Can it be welded in, or does it screw in?
Either. Weld it in for a seamless finish, or screw it in using the supplied stainless hardware and the three tapered mounting holes in the flange.
What are the filler neck dimensions?
Flange diameter 2-15/16", neck diameter 1-1/2", neck length 2-1/4". A universal fill tube joins the neck to the tank, and a 1.5" side fill tank is the simplest thing to run it into.
Is it sealed against water?
The flip-up cap closes onto the neck face and the retaining chain keeps the cap with the truck, but this is a fuel filler, not a watertight hatch. Seal the panel to the bed when you fit it and treat the cap as a fuel cap rather than a gasketed lid.
How do I know it fits my truck?
This part is listed for 1967–1987 Chevy and GMC Blazer, C10, C20, C30, Jimmy, K10 and others. The full year, make and model list is in the Truck Compatibility tab on this page. If your truck has been modified, or you are between two of the year ranges we list, send us the year, make and model and we will confirm the fit before you order rather than after.
How long before it ships?
It is a stock item and generally ships within 1-3 business days. Carrier transit time is on top of that, and larger orders can arrive in more than one box on different days.
Still not sure? Contact us before you order.






























Waiting on fuel tank to finish job.
This panel does not fit the channel of the bed floor in a 1967-1972 pickup. It does fit perfectly into a 73-87, however.
We purchased this for a 1971 C10 we are building for a customer. Unfortunately, we discovered the poor fit in these era pickups upon arrival. I was able to test it in other customer rigs within the 73-87 span, and it matches the floor perfectly.
We spent some time radiusing it to fit the bed floor better, but no matter what, there will be a visible gap due to the design. I wish that LS Fab would remove the 67-72 compatibility span from this product, as it would have saved a headache for the customer and I.
The cost of shipping it back to Canada and paying a restocking fee outweighs the return one would receive so we are stuck with it.
Great product fits good.