O.S. Engine OS40914000 FS-95V Head Seal for RC nitro engines  [OS40914000]

Sealing gasket for FS-95V engines

The O.S. Engine OS40914000 head gasket is manufactured as a replacement sealing component for the FS-95V engine family. Its thin construction maintains combustion compression and prevents leaks between the cylinder head and crankcase in glow-fuel setups.

This item is intended only for engines identified as FS-95V. Verify the engine code stamped or cast on your cylinder head matches FS-95V before ordering. No assumption of fitment beyond the named model is made.

Service technicians familiar with glow engines will find installation straightforward: remove the head, inspect and clean the mating surfaces of any residue, lay the gasket flat on the mating face, and torque the head screws in the recommended sequence and values. Avoid over-torquing and recheck compression after a short run.

From a maintenance perspective the gasket is designed to protect engine reliability rather than alter tuning; consistent sealing preserves steady compression which supports repeatable needle adjustments and predictable engine response during break-in and later tuning.