The OS Engine Drive Spacer GT33 is a crucial part for the OS GT33 engine, designed to ensure proper alignment and smooth functioning of the engine's drive system. Made from high-quality, durable materials, this spacer helps maintain the correct distance between engine components, reducing wear and tear while optimizing performance. Whether you're replacing a worn part or performing regular maintenance, the OS Engine Drive Spacer GT33 provides a precise fit, ensuring your engine operates smoothly and efficiently, making it an essential part for any model aircraft enthusiast.