The Hirth 3202 and 3203 are a family of in-line twin cylinder, two stroke, carburetted aircraft engines, with optional fuel injection, designed for use on ultralight aircraft, especially two seat ultralight trainers, gyrocopters and small homebuilts.
[1][2] The 3203 was developed as a replacement for the Hirth 2706 and as a competitor to the 64 hp (48 kW) Rotax 582.
The engine is similar to the Rotax powerplant in being a two-cylinder in-line engine, with dual capacitor discharge ignition, although it is air-cooled, compared to the 582's liquid cooling.
The 3202 was developed from the 3203 as a de-rated version to replace the Hirth 2704 and compete with the 50 hp (37 kW) Rotax 503.
[1][2] Both the 3202 and 3203 use free air or fan cooling, with dual Bing 34 mm slide carburetors or optionally fuel injection.