Replacement Head Gasket for GT33 Engines, 0.4T - OS28304160 by O.S. Engine  [OS28304160]

Service Gasket for GT33 Engines

The O.S. Engine OS28304160 head gasket is designed as a replacement component for GT33 series nitro RC engines. Acting as the seal between the cylinder head and crankcase, its 0.4T thickness maintains combustion chamber integrity and reduces the chance of compression loss during operation. This is a model-engine service part, not suitable for full-size engines.

Fitment and role: labeled for GT33 compatibility, this gasket helps keep compression consistent across runs, which supports repeatable idle and throttle response when the engine tune is correct.

Installation overview: strip the head, clean flat mating faces, and remove all old gasket material before fitting. Place the gasket squarely on the cylinder, refit the head, and tighten the bolts progressively in a cross pattern to the recommended practice. Verify there are no external leaks and run the engine briefly to confirm the seal under working conditions.

Tuning and maintenance notes: replacing a compressed or damaged head gasket can restore lost compression and improve mixture stability. Carry spares for quick replacement during events to minimise downtime.