https://www.alwaytec.com/product/for-fuel-system/45-auto-fuel-system-air-pump-hose-connector.html
A 45° auto fuel system air pump hose connector is a specialized connector used in automotive fuel systems. It is specifically designed to connect the air pump hose to the fuel system at a 45-degree angle. This connector helps to ensure proper flow of air and fuel within the system while accommodating for space constraints and providing an efficient connection. It is primarily used in automotive applications to ensure the smooth operation and performance of the fuel system.