Took this unit out of my 03 ML, I also took the bracket out that it mounts to and saved all of the bolts, I have some pics and can email them to whomever is interested, the production date was either june or july of 02, it works fine, just taking some parts off the car to make up for all the money lost on trying to fix it (but cant) so it's getting parted out. The cartridge is included. $200.00 or BO paypal/google checkout(preferred) orif your locale to Charlotte NC you can come pickit up.