Its below the fuel filter on the front side of the engine. To get to it to change it you have to disconnect ,and move to one side ,the two air feed pipes to the inlet manifold from the charge cooler, & then remove the "Y" inlet pipe from the inlet manifold to get your hand in to remove & replace the filter cartridge. You will also have to disconnect & move a wire from the fuel filter and another from the "Y" piece.
MIRA BOSS 90
March 2009