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

Gasket Fit and Compatibility

The O.S. Engine OS28304160 head gasket is supplied as a replacement for GT33 series nitro RC engines. It provides the sealing interface between the cylinder head and crankcase; the 0.4T thickness maintains combustion chamber compression and helps prevent leakage during operation. This component is for model engines, not full-size machinery.

Fitment and role: indicated as GT33 compatible, this gasket helps preserve compression stability across runs and supports steady idle and throttle response when the engine tune is correct.

Installation overview: remove the head and thoroughly clean both mating surfaces before fitting, ensuring all traces of the old gasket are removed and checking for surface defects. Lay the gasket flat on the cylinder, reinstall the head, and torque fasteners evenly in a cross sequence as recommended. After assembly, check for external leaks and perform a brief test run to confirm sealing under load.

Tuning and maintenance notes: replacing a deteriorated gasket can resolve reduced compression issues and assist in maintaining consistent timing and mixture behaviour. Keeping spare gaskets available is recommended for swift service at the bench or track.