+3 Fuel Diesel/Gas Filler Neck Mount For Flatbed or Service Body Trucks KB-FNM $15.95 In stock Quantity: 1 Add to Bag Product Details Fuel filler neck mount perfect for flat beds or service body trucks 2-3/8" Center Hole 2-5/8" Screw Hole Spacing Fits most Chevy/GMC, Dodge & Ford Truck Filler Necks. Save this product for later Favorite