Aqua Craft Crafted by OS Pro Series 46 R/C Nitro Plane Engine Two Stroke Xlnt Co

OS Max FP Series FP-20 R/C Nitro Plane Engine W/ 2 A Carb & OS-842 Muffler

420. O.S. Max 46 SF R/c Model Airplane Engine

K&B Marine 3.5cc Outboard OB RC Boat Engine Original Packaging

1987 OS MAX 10 FP rc model plane glow engine 1.76cc capacity, NIB never used.

O.S. 2-Stroke Nitro & Glow Fuel Engine for Airplanes & Aircraft

K&B .20 Sportster R/C 5600 w/muffler & ext., GREAT COMPRESSION, Little Use

O S Max F P Series FP 40 R/C Nitro Plane Engine E3030 Muffler 3A Carb Xlnt Comp