If it is anything like it partners in the rest of the family in 05 it's in the fuel tank.
Fuel filter is located inside the fuel tank so you have to remove you fuel tank to replace the fuel filter. I had a problem with mine and had to replace the fuel pump and filter at the same time.
Where is my filter for my 97 ISUZU RODEO
In the fuel filter pocket
Bought one for my 2004 Isuzu Ascender. Depends on what filter you buy, and who replaces it. The cost for the actual filter ranges from $7 to $48 dollars for the 'professional' fuel filter. The labor ran me $50.00 to install it. I am sure I could have had it done cheaper, but am new to the area and haven't yet found a good, honest, reputable, non-franchise (independent) mechanic, if such a creature exists.
The fuel filter is located near the right rear wheel bolted to the chasis.
The fuel filter is located under the frame in front of the passenger rear tire.
The fuel filter on a 2005 Isuzu NPR 6.0 Liter is located inside of the fuel tank. The filter can only be replaced if the fuel pump sender assembly is replaced.
My fuel filter is located under the hood in front of the engine. It's about 6-8 inches long.
Depends on what vehicle (make/model/year)
It is inside the passenger side rear wheel well.
It is in the line under the truck about midway to the engine.
Drivers side frame rail.