Tail Light Fuel Filler Kit – 73-91 GMC Chevy Squarebody Truck

This kit moves the gas cap out of the bed floor and into the taillight housing on a 1973–1991 Chevy or GMC squarebody. It's a hidden filler that still opens where you can reach it, and the panels are designed from 3D scan and CAD data so the shape follows the bed you already have.

Features

• CNC laser cut 18-gauge steel, pre-formed and shipped with the sides tacked in place as shown.
• Includes a polished 1.5" stainless steel fuel filler.
• Spring-loaded hinge assists with closing.
• Laser cut taillight mounting holes.
• Works with LED taillights or stock GM lights.
• Uncoated steel, ready to paint or powder coat.

Download and print the fuel filler template

Choose your option

• Driver side or passenger side.
• With or without a pair of LED taillights.
• With or without a gas filler delete panel, in 1973–78 or 1979–87 fitment.

Optional LED sequential tail lights

A direct replacement for your original tail light, made to fit squarebody Chevy trucks. Sold as a pair with the required LED turn signal flasher.

• Sequential operation with a brake-attention feature and an off switch.
• Comes with a special tail light mounting base plate.
• Electronics fully sealed in epoxy against corrosion and moisture.
• Suburban models require a modification to the internal bracket.

Optional gas filler delete

Our gas filler delete for 1973–78 and 1979–87 GM/Chevy trucks is a panel formed to fit exactly where the filler neck used to be. Weld it in to shave the gas filler hole on the driver side of the cab. Laser cut from 16-gauge steel.

Fitment notes

Taillights are not included unless you select them. The kit works with stock GM lights and LED taillights, but not LMC aftermarket lights. It may also not work with fuel nozzles that carry a vapor-sealing or pressure-seal device, as some states require — it's best used with standard nozzles.