Fuel Filler Neck, Plastic 85-91 (will fit 80-85). 251-201-121D

Brand new fuel filler neck, this is the plastic version for 85-91 model years. This will fit 80-85 as a replacement for the metal one, but will also need the seal changing to match. 

You will need part number 251-201-139B adaptor seal if you are putting this on a 80-85 bus.