filler neck housing
This worked better that i anticipated! So many of the newer trucks have no cap, so when installing a service body or a flatbed, the filler neck is exposed to the elements. This is a clean way of solving that problem.
 
            
        | Offset Angle: | 42° | 
| Hole Diameter Needed To Install: | 4-7/8" + (3/8"L x 3/4"W) Square Tabs on each corner | 
| Surface Flange Outer Diameter: | 6.5" max outer Diameter at quarter panel mounting ring. | 
| Surface Flange Inner Diameter: | 4-7/8" Inside the outside ring | 
| Surface Flange Bolt Pattern: | 5-5/8" Hole Center To Center Straight Across. | 
| Bucket Hole Inner Diameter at Fill Neck Mounting Flange = Bottom: | 3-7/8" = Inside where filler neck mounts to. | 
| Fill Neck Hole Diameter: | 2-1/2" = Hole filler neck goes through at mounting flange from back. | 
| Lid Material: | Steel | 
| Housing Material: | Hard Plastic | 
| Housing Material Thickness: | 1/32" | 
| Depth From Back of Flange: | 3-3/8" @ Deepest Point = Deepest this will protrude inward | 
| Locking / Non Locking? | Non Locking (Locking Not Currently Available) | 
| Includes: | Allen Wrench, Door And Housing | 
| Installation Note: | Designed To Snap In To Hole With Cutouts. We Recommend Getting Longer Bolts & Bolting In. | 
| SEE RELATED PRODUCTS BELOW | 

This worked better that i anticipated! So many of the newer trucks have no cap, so when installing a service body or a flatbed, the filler neck is exposed to the elements. This is a clean way of solving that problem.
seems to be well built we will see how it last.