The cylinder liner plays a crucial part in forming a tight seal with the piston rings, containing the high-pressure gases produced during combustion and promoting efficient energy conversion. The smooth motion of the piston within the precisely-machined cylinder liner allows for optimal power generation and reduced friction, contributing to the overall performance and longevity of the M40 engine. As an essential element of the engine’s combustion process, the cylinder liner exemplifies the meticulous engineering and craftsmanship involved in creating a reliable and high-performing engine.