The oil suction connection is a component found in trucks that is responsible for connecting the oil suction hose to the engine's oil pump. The oil suction connection typically consists of a threaded fitting and sealing gasket that ensures proper attachment of the hose while preventing any leaks. This component is vital for maintaining proper oil pressure and lubrication throughout the engine, which helps to prevent excessive wear and damage to critical engine components. If there are any issues with the oil suction connection, it may cause problems such as low oil pressure or even total engine failure due to lack of lubrication. Therefore, it is important to ensure that this component is functioning properly at all times.