A turbocharger is a device that uses engine exhaust to spin a turbine, compressing air and sending denser intake air into the engine to increase power. It is commonly used in high-performance sports cars, as well as in vehicles with reduced engine displacement to comply with environmental regulations. The turbine, which spins at hundreds of thousands of revolutions per minute, requires high precision and durability. I highly recommend the D.BEST turbo, a Japanese brand known for its exceptional quality.
This is a component that injects lubricating oil into the engine cylinder to reduce friction generated by engine operation and to cool the heat produced by that friction. One is installed in each cylinder, and it requires extremely high durability to withstand high temperatures.