What a GREAT gauge !! Having had the Defi amber Boost gauge in my last ride(as well in the vent) this P3 gauge fits and looks to be OEM...it's that good. It still blows me away so many dudes or dudetts do not have a boost gauge in there BMW turbo cars...I love my 1 but seems rather bizarre to me that BMW feels having so many bells and whistles in these cars and neglected to " INCLUDE " a boost gauge stock....The P3 is so perfect in fit and finish ...a MUST MUST mod !