As previously mentioned, this hose would not snap no matter what I tried, including tapping with a hammer and a straight edge. To get it to work I had to remove the plastic release ring and remove the 4 pin locking tab from the old original hose and swap it onto the new hose. After replacing the retaining clip, the new hose was locked in place with minimal effort by pushing it open with one hand. The 4-pin metal clip that came with the hose looks wrong. Save yourself the hassle and either buy another hose or replace the ring and clamp on your old hose. Installed and had to cut the e46 hose as it was too long and had too many kinks. As a result they replaced my cracked and leaking hose and after replacing the lock there is no leak at the connection point.