Filler neck restrictor

{
  "id": "MLC-T-ENV-010985",
  "term": "Filler neck restrictor",
  "field": "Environment",
  "term_source": "Filler Neck Restrictor",
  "definition": "A device that narrows the filler neck to a vehicle's gas tank in order to prevent accidental use of leaded gas, which was historically dispensed from a larger diameter filler nozzle than unleaded gasoline. Leaded gasoline is generally no longer commercially available in the United States.",
  "subject": "Air",
  "references": [
    "Importing Vehicles and Engines Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/filler-neck-restrictor/"
}