How to Change a Fuel Filter

When people talk about routine maintenance greatly lengthening the life of a car, they are usually referring to simple services like replacing the fuel filter and changing the oil at regular intervals. Fuel is necessary to make the engine run, so in order to keep the fuel injectors, fuel pump, and fuel lines clean, a fresh fuel filter is required.

Most modern gas stations have very clean fuel, and there is a slight amount of filtering done by the filter around the fuel pump. Despite this, very small contaminants can get through. Since fuel injectors have such tiny openings, the fuel filter is used to remove even the smallest contaminants. A fuel filter will last about 2 years or 30,000 miles before it needs to be replaced.

Materials Needed

  • Flare nut wrench of the appropriate size
  • Fuel line disconnect tool
  • Pliers
  • Protective gloves
  • Safety glasses
  • Screwdriver
  • Wrench of the appropriate size

Part 1 of 2: Remove the fuel filter

How to Change a Fuel Filter 2

Step 1: Locate the fuel filter. Generally, the fuel filter will be located under the vehicle on the frame rail or in the engine compartment near the firewall.

How to Change a Fuel Filter 3

Step 2: Remove the gas cap. Remove the gas cap to relieve fuel system pressure.

How to Change a Fuel Filter 4

Step 3: Disconnect the fuel lines. Use two wrenches to remove the fuel lines from the filter. Place an open-end wrench on the fuel filter fitting and a flare nut wrench on the fuel line fitting. Turn the fuel line fitting counterclockwise while holding the filter with the other wrench.

  • Note: The method for disconnecting the fuel lines varies between vehicles. Some vehicles have quick connect fittings that must be removed with a special disconnect tool. Some have banjo fittings that are removed with a ratchet or wrench, and some have hose clamps that are removed with pliers or a screwdriver.

How to Change a Fuel Filter 5

Step 4: Remove the fuel filter bracket mounting fasteners. Loosen and remove the fuel filter bracket mounting fasteners using a ratchet and appropriate sized socket.

How to Change a Fuel Filter 6

Step 5: Remove the fuel filter. Once the fasteners have been removed and the mounting bracket is loose, slide the fuel filter out of the bracket. Discard the old filter.

Part 2 of 2: Install the new fuel filter

How to Change a Fuel Filter 7

Step 1: Install the new fuel filter. Slide the new filter into the mounting bracket.

How to Change a Fuel Filter 8

Step 2: Install the fuel filter bracket mounting fasteners. Loosely install the bracket mounting fasteners by hand. Tighten them until they are snug using a ratchet and appropriate sized socket.

How to Change a Fuel Filter 9

Step 3: Reinstall the fuel lines. Thread the fuel lines in by hand. Place an open-end wrench on the fuel filter fitting and a flare nut wrench on the fuel line fitting. Turn the fuel line fitting clockwise until it’s snug while holding the filter with the other wrench.

How to Change a Fuel Filter 10

Step 4: Reinstall the gas cap. Replace it now so you don’t forget to do it before driving the car.

Step 5: Test the vehicle. Start the vehicle and check for leaks. If you find any, recheck the fuel filter, fuel lines and all fittings to make sure everything is secure.

That’s what it takes to replace your fuel filter. If this seems like a job you’d prefer to leave to a professional, the team at YourMechanic offers expert fuel filter replacement at the location of your choice.

Next Step

Schedule Fuel Filter Replacement

The most popular service booked by readers of this article is Fuel Filter Replacement. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE


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Recent Fuel Filter Replacement reviews

Excellent Rating


Rating Summary


33 years of experience
220 reviews
33 years of experience
Chevrolet Silverado 1500 V8-4.8L - Fuel Filter - Wheat Ridge, Colorado
Stephen is knowledgeable, fair, and efficient when handling his jobs. This is my second time using him through my mechanic's website and both times he went above and beyond.
Ford Ranger - Fuel Filter - Westminster, Colorado
Wonderful exoerience!! Definitely recommended him to anyone I know. Very trustworthy! Thanks again for the great service.


37 years of experience
565 reviews
37 years of experience
Toyota 4Runner V6-3.4L - Fuel Filter - Rancho Cordova, California
John showed up and got right to work. The work was done right and he was thorough about it. He was knowledgeable and very friendly. I will definitely be booking future repairs with him.
Jaguar X-Type - Fuel Filter - Folsom, California
John was great and knows what he is doing. Friendly and customer oriented. Too bad he was given the wrong part and it then took over a week to complete the service. None of this negativity is due to John . He gets 5 stars


23 years of experience
2372 reviews
23 years of experience
Ram 2500 L6-6.7L Turbo Diesel - Fuel Filter - Orange, California
Chris arrived on time and was very professional, courteous and very knowledgeable. I had a large list of services because I just bought a used 16 Ram 2500 Diesel 4x4 with 30K miles and was petrified to see what he was going to pull up on his tablet. Chris went over the entire truck and took that list and cut it in half, saving me hundreds of dollars, literally! We ended up performing half of what was scheduled and I was extremely happy with his suggestions and professionalism. This was a great experience and I will definitely be using Chris in the future for all of our vehicles.
Toyota 4Runner - Fuel Filter - San Clemente, California
Showed up at approx 1230p fora 7p appt which worked out well for me. Had a different part that fixed the issue of the fuel filter. He was definitely a take care of business get it done and move on which I had no problem with especially since he fixed the current problem. Thank you. I liked the YM experience


26 years of experience
21 reviews
26 years of experience
Ford F-350 Super Duty V8-6.4L Turbo Diesel - Fuel Filter - Las Vegas, Nevada
mechanic was friendly, efficient, and left the area clean. I was pleased with the service. Thank you Juston

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