GT33 Head Gasket (0.4T) Replacement - OS28304160 by O.S. Engine  [OS28304160]

GT33 Head Gasket Overview

The O.S. Engine OS28304160 head gasket serves as a direct replacement for GT33 series nitro RC engines. It seals the joint between the cylinder head and crankcase; the 0.4T thickness helps keep combustion chamber compression consistent and prevents leakage during running. This part is for model engines only and not for full-size use.

Fitment and role: marked for GT33 compatibility, the gasket helps maintain steady compression across sessions, supporting reliable idle and throttle response when the engine and carburetion are correctly set.

Installation overview: remove the cylinder head and clean mating faces thoroughly before fitting the new gasket, removing old gasket residue and checking for surface damage. Seat the gasket flat on the cylinder, reinstall the head, and tighten nuts evenly in a cross pattern following the engine maker's recommended practice where available. After assembly, inspect for external leaks and perform a controlled run to confirm sealing under load.

Tuning and maintenance notes: a worn or crushed head gasket often causes low compression; replacing it can restore compression and consistent mixture behavior. Keep spare gaskets handy for quick field repairs.