http://www.mazdatrix.com/pictures/b-...terMount3S.jpg

REW pedastal. Oil from the oil coolers enters the sides. Flows up the filter, through the element and down center port.

Overtime Mazda changed their filters for the FD as they reduced inventory by consolidation of similar parts into less required parts. Thus our filters become smaller in diameter.

Doing research I came up with this that I used. It is the original diameter which gives more filtering area and less back pressure. It also has been rated in the top in filter tests.

Purolator PureOne Oil Filter
PL14459: RP = 12-15psi diff, ht = 2.95", wt = 3.15", anti drain back

It use to be painted metallic blue and is now non-slip dull mustard.