Review on Engine Coolant Overflow Recovery Reservoir Tank With Sensor & Cap For BMW E46 320I, 323I, 323Ci, 325I, 325Ci, 325Xi, 328I, 328Ci, 330I, 330Ci, 330Xi (1999-2006) - BDFHYK Replacement Part by Cory Jacobson

This is the worst reservoir EVER. I’ve owned my BMW for some time and have bled coolant multiple times and very familiar with the bleeding process. I wanted to replace my old canister because it was leaking slightly where the upper hose connects to reservoir. Day 2 I went to the store and as soon as I leave I hear a loud pop. I get out and coolant is EVERYWHERE. I jacked the car up to see a huge crack in the reservoir. I wanted to return this one but lost the freaking blue sensor when putting back on my old leaking one.