PN: 0044302301. Any hardware included with this item may have a different color than whats shown in the item images. All products are new and unused. This can be seen as grind marks, removal of stickers, or blank areas in the casting where the vehicle manufacturer logo or part number may have been.
I've been using this brand on my Mercedes-Benz vehicles and never had a problem, this time I haven't installed yet, but I've checked with the old part and there is no reason for it not to work!!
It took at least 15 minutes to bench bleed as it kept blowing bubbles and when installed and bled it seemed to pump up fine until I started the car and the pedal slowly went to the floor. I thought it may be the brake booster so I tested by putting another master cylinder from another Mercedes 240d I have and that one worked just fine. There is a minor leak inside of this master cylinder that would just pass fluid from the front reservoir to the rear back and forth when pumped. I am certain this is just a one in a million and I know Metelli makes good products at a reasonable price.