OS Engines

O.S. Built-Up Parts Set Cyl Piston OS Speed R21GT

Piston Ring: 120AX

Muffler Extension: 120AX

Motor Mount: FS91SII, FS110 Pump

Front Bearing: 40-240

Drive Washer: 91FX

Universal Nipple: #21, T1202 Speed

Carburetor Reed Valve Gasket: GT33

Cylinder & Piston Assembly: 55AX

Needle Assembly #40A

Carburetor #61A: 75AX

Gasket Set: FS-120 II

Carburetor 40K: 46AXII

Long Spinner Nut 1/4"-28

Muffler Extension 35mm: E-402

E4050 In-Cowl Muffler: 65AX

High Pressure Check Valve: 91HZ-R

Motor Mount: 25LA

Cylinder & Piston: 46AX

Muffler Extension: 761, 871

15LA ABN .15 Airplane Glow Engine with Muffler

LC3 T-Maxx Revo Glow Plug Hot

#7 Glow Plug, Medium Hot Air

Carburetor: #11K Slide, 18TZ, 21TM