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

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


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Our 1973-1991 Squarebody Chevy/GMC Taillight Fuel Filler Kit is the best gas filler relocation kit on the market and has been designed using 3D scan and CAD Design technology to generate an extremely accurate part. Also, it provides a clean, hidden alternative to putting the gas cap in the bed floor. This tail light fuel filler is the best custom solution to relocate the stock filler.

Our 1973-1991 Squarebody Chevy/GMC Hidden Tail Light Fuel Filler Kit relocation kit features:

  • ★ CNC Laser Cut 18 Gauge Steel
  • ★ Comes laser cut and pre formed for an easy installation.
  • ★ CAN be used with LED taillights or use stock GM lights
  • ★ Assembly is uncoated steel and can be painted or powder coated for a color of your choice.
  • ★ High polished 1.5" Stainless steel LS engraved Fuel filler spout (2" spout coming soon) 
  • ★ Laser cut taillight mounting holes.
  • Instructions will be included in your shipment

Square Body Tail Light Fuel Filler Installation

YouTube video

Taillight wiring will need to be extended. Due to different tank manufacturers a joiner tube is not included. We suggest to source fuel grade line to join filler spout to tank or fabricate a tube with rubber couplers on either end to your tank.

*Optional LED Sequential Tail Light addon features:

This is a direct replacement for your original tail light, and is made to fit square body Chevy trucks. With its modern technology and sleek design, this tail light is sure to turn heads wherever you go!

  • ★ Sequential operation with brake attention feature, and selector switch to turn off if desired.
  • ★ Also, taillights come with a special tail light mounting base plate.
  • ★ Electronics completely sealed in epoxy to resist corrosion and moisture.
  • ★ Includes LED turn signal flasher which is required.
  • ★ Modification required to internal bracket on Suburban models.
  • ★ Easy Installation
  • ★ If you add on the LED Taillights - they are sold as a pair and include a flasher

Please refer to photos for what is all included in the taillight fuel filler kit. It will come with the sides tacked in place as shown with a polished fuel filler

Additional information

Weight 2.1 kg
Dimensions 35 × 26 × 26 cm
Truck Year

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Interior / Exterior


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Driver Side, Passenger Side, Both Sides

Add LED Taillights

Add Taillights (2), No Taillights


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