The Franklin 2 series of 4-cylinder air-cooled horizontally opposed aircraft engines were produced in the 1930s and 40s.
Variants:
2A4-45
45 hp (34 kW) @ 2650rpm
2A4-49
49 hp (37 kW) @ 30000rpm
2A-110 / O-110
60 hp (45 kW) @ 3000rpm
111.3ci
ATC 240
2A-120 / O-120
60 hp (45 kW) @ 3200rpm
117.6ci
2A-120-C
Poland c.1980
2AL-112
alternative designation of the 2A4-45
Applications:
Sportavia RF-5S
WSK-PZL Krosno KR-02 Krokodyl
PZL-126 Mrówka
Wallis WA-116/F
Wallis WA-121/F
Bellanca 7ACA Champion
VTC SSV-17
Lockheed Little Dipper
All Aero 