The plugs i believe are near the exhaust manifold....
If you are unfamilliar with changing plugs you should not do it yourself
Because the plugs are near such high heat they are prone to fouling
Try to use NGK plugs and spring for the irridium
As you may already know never change plugs on a engine that is warm or hot. First thing in the morning stone cold is the best time to do it.
You can Google ask a Mitsubishi Tech on the web for further assistance
NGK platinum plugs
Six
In a 2006 Mitsubishi Endeavor, the spark plugs are located on the engine, accessible by removing the engine cover and the ignition coils. The Endeavor is equipped with a V6 engine, so there are six spark plugs, one for each cylinder. Each spark plug is situated on the top of the engine, connected to the ignition coil, which needs to be removed to access the plugs for replacement or inspection.
Well the v6 engine will require you to take the intake off to get to the rear plugs but other than that it is pretty much the same
2002 galant , can't find the spark plugs
GAP:044
I USE BOSCH PLATINUM
3 just on top of the engine,u can see black cap with screw and wire,other 3 under the intake.
Four.
0.7mm - 0.8 mm
Front and middle spark plug.
You must remove the entire intake manifold for you to have access on the three spark plugs located underneath it. it is advisable that a qualified Mitsubishi technician should do this.