The Bosch Leak Detection Pump - 0261222013 is a component used in automotive fuel systems to detect and prevent leaks. It is designed to monitor the pressure in the fuel tank and detect any leaks that may occur. The pump is responsible for drawing fuel vapors from the tank and routing them to the engine for combustion. It is an essential part of the vehicle's emissions control system and helps to ensure that harmful pollutants are not released into the environment. The Bosch Leak Detection Pump is a reliable and efficient solution for maintaining the integrity of the fuel system and reducing emissions.