O.S. Engine OSMG1330 IL-300 Dia-Star Vintage Inline 4-Cylinder  [OSMG1330]

Why Modelers Choose the IL-300 Dia-Star

For scale flyers who focus on authenticity, the O.S. Engine IL-300 Dia-Star captures early engine character while delivering usable power. Its exposed valve gear and narrow inline profile make it ideal for reproductions that demand accurate frontal appearance.

Period Appearance Coupled with Practical Design

The IL-300 Dia-Star combines authentic styling with solid performance, using a displacement of 0.765 cu in per cylinder to produce reliable thrust for larger airframes. Because the inline layout is slim, modelers can retain original cowling contours with minimal trimming.

Tuning Simplicity and Flight Flexibility

Equipped with a single carburetor, the engine is easier to set up and service than multi-carb arrangements. Its practical RPM range from 1,800 to 8,000 supports a mix of cruise and sport flying; recommended props are 20x10 and 22x8 depending on model weight.

The O.S. Engine IL-300 Dia-Star is aimed at experienced builders who want a faithful period look without sacrificing everyday usability. It makes a striking and functional fit for large-scale reproductions.