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Ron Z.
Ron Z., - Kia Tech -
Category: Kia
Satisfied Customers: 17778
Experience:  18+yrs experience. State Inspector & Kia Diagnostics/Repair
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where is the fuel filter located on a 2004 kia optima?

Customer Question

where is the fuel filter located on a 2004 kia optima?
Submitted: 5 years ago.
Category: Kia
Expert:  Ron Z. replied 5 years ago.

Welcome to! My name is DriveFast71(Ron) and I will do my best to answer all of your questions completely and accurately.


The fuel filter is located underneath the chassis on the driver's side of the fuel tank.


  • Remove the two fitting nuts while holding the fuel filter nuts securely.
  • Remove the fuel filter mounting bolts, and then remove the fuel filter from the fuel filter clamp
Ron Z. and 5 other Kia Specialists are ready to help you
Customer: replied 5 years ago.
Expert:  Ron Z. replied 5 years ago.

Is this the 4-cylinder or the 6-cylinder?


Customer: replied 5 years ago.
Expert:  Ron Z. replied 5 years ago.
I have double checked, using two different resources- That is the location I am given for the 4-cylinder. The 6-cylinder does not have an external fuel filter, it's part of the fuel pump assembly, located inside the fuel tank.
Customer: replied 5 years ago.
so its inside the tank? is there access through the back seat?
Expert:  Ron Z. replied 5 years ago.

Only if you have the 6-cylinder is it in the tank. If you have the 4-cylinder, the location above is correct.



2004 Kia Optima EX
Fig. 36: Locating Fuel Filter



If you have the 6-cylinder, it's part of the pump/sender assembly, located on the side of the fuel tank


Customer: replied 5 years ago.
we cant find it on the exterior at all. the pic dosent help.
Expert:  Ron Z. replied 5 years ago.
That is the only image Kia is providing for the location. It's mounted to the frame on the driver's side, rear. There very well may be a black plastic cover, covering it.

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