Our 1973-1991 Squarebody Chevrolet/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. Passenger Side. **Taillight fuel filler kits may not work with fuel nozzles which have vapour sealing device or pressure seals like in California.**Note: Does NOT include tail light.{specs}