What part connected to oil filter on a 93 Cadillac Fleetwood?
On a 1993 Cadillac Fleetwood Brougham with a 5.7 Liter V8 it uses a Purolator L15313 oil filter.
Which part did you have in mind? The instrument cluster consists of several components, and one part number does not cover them all. Personally, if you're mechanically inclined, I would recommend you remove the part and get the manufacturer and part number from the part - chances are, it's not a component proprietary to Fleetwood, as their chassis are manufactured by third parties, and you will probably find it for less at a truck parts…
I found the oil filter on my 2009 Santa Fe but is that round black top part of the filter or is the filter under that cap?
Oil filter adapters on 2000 DeVilles are between the oil filter and the engine block, your oil cooler hoses from the radiator connect here also. To access the Oil filter adapter, remove the oil filter (spin-on cartridge) located about the center of the car (from left to right) behind the front cradle beam (looks like part of the frame) and the engine oil pan (aluminum). Cadillac Man