Frequently bought together
Description
Relocate the fuel tank and you are left with a hole in the bed side. This port drops into the factory fuel filler opening on 1977–1991 Chevy and GMC trucks with a square fuel door and gives it a job: a charging point, an accessory power feed, or an ignition kill switch. No welding, no fabrication.
Features
- Direct fit for 1977–1991 GM trucks with a square fuel door, and it works on either side of the truck.
- No welding or fabrication, though some drilling is required.
- Takes standard SAE quick-connect plugs or standard AC plugs, depending on the version you order.
- Suits battery tenders and maintainers, trickle chargers, solar charging systems, and auxiliary or accessory power.
- 3D printed from ASA filament, weather-resistant, with a factory-style finish.
- Comes with a backing plate, mounting hardware, two cylinder halves for the cable, and a 10" SAE cable, 12" standard plug or ignition kill switch depending on your choice.
Choose your option
- SAE plug
- Standard plug
- Ignition kill switch. Interrupts the ignition circuit so the engine will not start. This is not a battery disconnect.
- Blank universal insert, for a gauge, your own switches, or whatever else suits the build
Truck compatibility and specs
Fits these trucks
1977–1991
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. Parts from another year on it? Check what swaps.
Specifications
- Part number
- 7791FFCP
- Brand
- LS Fabrication
- Interior / Exterior
- Exterior
- Weight
- 0.3 kg
Fits alongside
Popular in 73-87 GMC Chevy Square Body Truck Parts:
Installation
The port installs directly where the old filler neck used to be. No welding or fabrication is needed, but some drilling is required.
The backing plate, mounting hardware and two cylinder halves for the cable are in the box.
Reviews
Fuel Filler Charger/Ignition Kill Switch Port - 77-91 GMC Chevy Truck
Common questions
How do I know it fits my truck?
This part is listed for 1977–1991 Chevy and GMC Blazer, C10, C1500, C20, C2500, C30 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.
What if it is not right for the truck?
You have 30 days from delivery to request a return. The part needs to come back new, uninstalled and in its original packaging - once a part has been trimmed or welded it cannot go back. Return shipping is at your cost, and we ask that returns come by USPS. Made-to-order, sale and clearance items are final sale. The full terms are on our returns page.
Can I install this myself?
It is designed for an at-home install. Read the fitment notes and the Installation tab on this page before you start for anything that needs drilling, trimming or welding, and where an installation guide or video exists for the part it is linked there.
Still not sure? Contact us before you order.
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