This is an intake hose developed by do88 to OEM intake hose. This is a stronger alternative to OEM hoses and in most cases with better airflow with its smooth inner layer! Our hoses have 4 PLY reinforcement and integrated steel wire to prevent the hose from collapsing under negative pressure. Another advantage of our hoses are the silicone material that withstands high temperature for long time. This makes our hosekits a terrific upgrade if your original hoses starts to crack from age or maybe you use your car in a way that the original hoses where not designed for.On this hose there are two small hose connections. One some engines only 1 connection is used, then the other needs to be pluged. Plastic hose joiners for these 2 connections are included in this kit. Kit with matching hose clamps you find under "Accessories", Hoseclamp kit do88-kit2.This hose kit is available in three different colors Blue / Black / Red. There are no performance difference between the different colors, choose which color you think will be best for your car. All part numbers from the vehicle manufacturer are only stated as reference.