Same parts supplier, they provide the interface if I am correct.
I would rather spend a few extra dollars and buy the parts from here. I feel the assistance and information here is worth it.
Hands down, I prefer to support this site whenever possible, and I have never had a problemw ith gettign the right parts. Phil is great when you call on the phone, and has always had great recommendations that I have been 100% satisfied with when it comes to which oem brand to get.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.