| 123 / | HD | INTERNAL-COMBUSTION ENGINES |
| 434 | DF | CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL) {29} |
| 445 | DF | .~ Fuel injection system {5} |
| 468 | ![]() | .~.~ Having a specific shape, material, or location of fuel line {1} |
| 469 | DF | .~.~.~> Specific fuel line mounting means |