|A Ranger 6-440C-5 on display at the Air Zoo museum, Portage, Michigan|
|Manufacturer||Ranger Aircraft Engine Division|
|Major applications||Fairchild PT-19/PT-26 |
The Ranger L-440 (company designation 6-440C) are six-cylinder inline inverted air-cooled aero-engines produced by the Ranger Aircraft Engine Division of the Fairchild Engine and Airplane Corporation of Farmingdale, New York, United States. The engine was mainly produced for Fairchild's family of training aircraft in the mid-1930s.
- 175hp variant with a 6:1 compression ratio.
- 180hp variant with a 6.2:1 compression ratio.
- 190hp variant with a 6.8:1 compression ratio.
- 200hp variant with a 7.5:1 compression ratio.
- Fairchild 24
- Fairchild PT-19/26
- Falconar SAL Mustang
- Grumman Widgeon
- Maestranza Central de Aviación HF XX-02
- St. Louis PT-LM-4
Data from 
- Type: Six-cylinder inline inverted air-cooled
- Bore: 4 1⁄8 in (104.8 mm)
- Stroke: 5 1⁄2 in (139.7 mm)
- Displacement: 441 in³ (7.2 litres)
- Length: 53.156 in (1.351 m)
- Width: 21.954 in (0.549 m)
- Height: 33.50 in (0.854 m)
- Dry weight: 376 lb (170.7 kg)
- Valvetrain: Overhead camshaft
- Fuel system: Updraft carburetor
- Fuel type: 65 octane rating gasoline
- Oil system: Full pressure type
- Cooling system: air-cooled (pressure type cylinder baffles)
- Power output: 175 hp at 2,450 rpm
- Compression ratio: 6:1
- Bridgman 1988