
Flex Coupler Elbow 4 inId Elbow 90 Degree Black is an intake coupler/reducer used to join sections of air-intake tubing while maintaining a sealed airflow path. A proper coupler is what turns separate tubes, bends, MAF sections and throttle-body adapters into one solid intake assembly without vacuum leaks or misaligned joints.
Use the listed inside diameters to match the tube sizes on each side of the connection. Match the listed material and dimensions to the intended intake location and clamp style.