s54 oil filter housing. This is the one with the provisions for running an oil cooler. This will fit all s50, s52, m50 and m52 engines engines as well. There is a built-in thermostat so that the oil doesn't run in the cooler until it reaches a certain temperature (180 F, I believe). In good condition. Located in Albany. Can meet in Concord during work hours. $300 OBO

I can't post picture here so please see here for more info:

http://sfbay.craigslist.org/eby/pts/4252433045.html