O.S. Engine OS40914000 Head Gasket FS-95V Cylinder head gasket for RC nitro engines  [OS40914000]

Head gasket for FS-95V

This O.S. Engine head gasket is an RC-scale replacement part specified for the FS-95V engine family. It serves the basic purpose of sealing the cylinder head to keep combustion compression consistent and to prevent leakage between the head and crankcase in glow-fuel engines.

Compatibility is limited to the FS-95V designation listed in the product name, make sure the engine code on your cylinder head matches FS-95V before ordering. This article does not assume compatibility beyond the model stated in the product title.

Installation is straightforward for hobbyists familiar with glow engines: remove the head, inspect mating surfaces for dirt or old gasket residue, fit the gasket flat to the head or crankcase surface, then torque the head screws to the engine maker's recommended pattern and values. Avoid overtightening, recheck after a short run cycle, and confirm compression and idle behavior before final tuning.

In tuning and maintenance workflows the gasket plays a preventative role rather than a performance-enhancing one; reliable head sealing maintains repeatable compression which supports consistent needle adjustments and predictable engine behavior during break-in and subsequent tuning sessions.