O.S. Engines Marine

O.S. Engines® Marine

Power for all applications.

Available in an unprecedented range of displacements.

Water-cooled cylinder heads add years of high performance.

In O.S. Marine engines, dual bearings and water-cooled cylinder heads pave the way to smoother operation, less wear and longer, stronger life! All offer Schnuerle porting for top fuel economy, and true ABC construction for the performance edge in sport boating and serious racing!
A built-in recoil starter adds starting ease to star performance. The 46VX-M ABC features drum rotor induction and a single-needle #40A carb.
Designed for high-nitro fuels and all-out racing, the 21VZ-M ABC features a 2-piece turbo head for top performance. All require a header and muffler or tuned pipe. The 46VX-M also requires a glow plug.