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

FS-95V head sealing gasket

This O.S. Engine OS40914000 head gasket is supplied as a replacement seal for the FS-95V engine family. It seals the cylinder head to keep combustion compression steady and to prevent leakage between the head and crankcase in glow-fuel engines.

Compatibility is limited to the FS-95V code shown in the product title. Confirm the engine code on your cylinder head matches FS-95V before ordering. The item is not guaranteed to fit other engine models.

Installation is straightforward for hobbyists familiar with glow engines: remove the head, clean mating faces of dirt and old gasket residue, place the gasket flat against the head or crankcase surface, and torque the head screws following the engine maker's recommended pattern and values. Avoid overtightening and verify compression and idle after a short run prior to final tuning.

As a maintenance component the gasket preserves sealing reliability rather than increasing power; dependable head sealing keeps compression repeatable which helps maintain stable needle settings and engine behavior through break-in and later tuning.