Best Fuel Filter for Duramax in 2021: A complete guide

If you are looking for a fuel filter for your Duramax, then this complete buyers guide is the place to start. You will learn about different types of filters, and what they do. We will also review some of the best models available on the market today to help you make an informed decision when it comes time to buy one!

What are fuel filters?

A fuel filter is a device that cleans the dirty diesel from your engine before it gets to combustion. It’s an important and necessary part of any vehicle. Make sure to always replace yours if they are not working properly or when replacing other parts in your car such as fuel pump/fuel lines/filters.

The difference between petrol and diesel fuel filter is that petrol filters are usually smaller. Theycan be mounted inline with the inlet fuel line, while diesel filters are often larger.

How do fuel filters work?

Fuel filters are a type of filter that removes impurities in the fuel like water, dirt, and rust from passing through to the injection system. The finer particles will be stopped by a mesh screen or a perforated metal plate inside the canister. While the larger particulate matter is captured by an absorbent pad made up of fibrous material.

Diesel engines use three-way fuel injection systems that have injectors mounted above each cylinder head; these injectors spray diesel engine oil into combustion chambers when needed for lubrication as well as air cooling purposes. As you might imagine there are many components involved in this process.

So it’s very important to keep your vehicle clean! If one thing goes out, then everything else suffers too – and that’s not something you want.

Best fuel filter for Duramax

ACDelco GM Genuine Parts TP3018 Fuel Filter Kit

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The ACDelco GM Genuine Parts TP3018 Fuel Filter Kit is the only automotive replacement part that you should consider installing. The sturdy steel casing makes for a long-lasting product and ensures high-quality filtering. It also has an OEM GM quality unmatched in the automotive replacement industry.

With 10-20% points higher water removal efficiency than its predecessors, this new design provides customers with better filtration capabilities year-round while keeping their intake system clear and debris-free.

Perfect for any 2001-2016 6.6L V8 Duramax Diesel engines!

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iFJF TP3018 Fuel Filter Kit

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The iFJF Diesel For TP3018 Fuel Filter is revolutionary. This multi-layer filter media design features an outer and inner filter (5 microns) element that catches any dirt or rust particles before they enter your engine, all while keeping 98% of the water out of the fuel system!

Truck owners love this product! Because it not only improves engine performance but also decreases service costs by preventing repair issues.

Perfect for Chevy Duramax GMC 6.6L Diesel

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FASS Titanium Series Fuel Filter Package XWS-3002

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The FASS Titanium Series Fuel Filter Package makes it easy to stay on top of your fuel filter maintenance–without breaking the bank. This kit includes two Extreme Water Separators and two Particulate Filters to ensure your vehicle runs properly for years to come.

The new 2 microns absolute rated extreme water separator traps about 99% of the water and is simpler than ever before. Save some serious money with this high-quality promo pack that will last over 20,000 miles or almost a year!

It is compatible with many diesel trucks, such as Dodge Ram Cummins, Duramax GMC Chevrolet 2500-3500HD 2005 and 2006

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Kofil TP3018 Fuel Filter Fit for Duramax 6.6L

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The Kofil TP3018 Fuel Filter Fit for Duramax 6.6L is the perfect way to keep your vehicle running smoothly without all those expensive and time-consuming trips to the mechanic. It’s easy to install thanks to its simple installation process, so say goodbye to those pesky car troubles that are taking up your weekends!

With 99% efficiency at 4 microns, it does a great job of getting rid of impurities. This fuel filter can hold more dust than competitors with improved filtration as well as a longer life span! No matter how many miles you put on your car, this has got you covered like always.

It is compatible with GM Duramax, Ford Powerstroke 2004, and up

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Caterpillar 1R-0750 Advanced Efficiency Diesel Engine Fuel Filter

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Caterpillar 1R-0750 Advanced Efficiency Diesel Engine Fuel Filter has 2-micron absolute filtering through cellulose media and is great for conversions. These filters are good at improving the fuel rate of the engine while also protecting it from damage due to dirty, unprocessed crude oil.

This product will not only prolong the service life of your vehicle but increase its efficiency!

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When should you change the fuel filter for Duramax?

Manufacturers recommend changing your fuel filter every 20,000 to 150,000 miles depending on the age of your car. This is because, after around seven years of driving, rust, dirt, and debris build up faster, clogging the filter.

There are a few signs that your fuel filter needs to be changed, but the best indicator is if you notice any change in how fast your car accelerates. If you experience hesitation or misfires, then this may be an indication of a clogged fuel filter.

Other symptoms of a bad diesel fuel filter include a strong odor of diesel fumes, brown or black smoke coming from the exhaust, and when the engine dies.

If you notice any one of these signs it is time to change your fuel filter!

How to check your Duramax fuel filter

The fuel filter is located near the engine. There are two ways to check if your car needs a new one, and both of them require a few simple tools that you can find in any automotive store or even around your house.

First method

The first way involves taking off the air cleaner box on top of the engine. Then use an inspection mirror to see deep inside it so you can spot possible clogs from dirt and dust particles.

This method will not be as accurate because there are other areas where debris could cause problems with the flow, but it’s worth trying out anyway!

Second method

The second way is more convenient, but you will need a flashlight and the engine turned off. The filter can be seen in its entirety from above with access to all of it.

Shine the light inside and look for any clogs or debris that may have accumulated on either side of the cartridge-shaped piece of metal hanging down from what looks like an accordion tube – this part should not be covered by anything else than plastic wrap!

If any particles are obstructing the flow, then it’s time to replace your fuel filter!

How to change Duramax fuel filter

The Duramax is a tried and true engine that requires routine maintenance to keep it running well. A fuel filter change falls under this category, although the frequency of such an event varies depending on usage levels.

When you are notified by your truck’s onboard system (or if there was some sort of bad batch) to check for any issues with the filters, do not procrastinate! This will help keep your fuel system running smoothly and prevent any costly repairs.

Make sure to check the type of filter you have before buying a new one! The most common are paper or cellulose, which both require replacement around every 20K miles (or about half that time if driving in city-like conditions). Newer filters use traps with a longer lifespan, but the frequency of replacement will still depend on your driving habits.


Step 1. Turn off the engine and allow it to cool for at least 15 minutes.

Step 2. Check onboard computer or dashboard alert light when necessary (or every 80K miles) for low fuel filter pressure.

Step 3. Assemble tools and supplies, including new fuel filter, newspaper, or old rags to prevent any spills from reaching the engine components, screwdriver (or ratchet), wrench

Steps 4. Disconnect battery cables on both ends of the truck’s frame near each corner–make sure you don’t touch metal with a grounding strap!

Steps 5. Unhook clamps connecting fuel lines at intake manifold; remove rubber hose clamp; loosen retaining bolts securing fuel filter housing cover to give enough room for removal of dirty paper-type filter.

Note orientation before removing it so later installation is easy.

Step 6. Install new filters in reverse order if installing cellulose traps which seals with an o-ring and doesn’t require a gasket

Step 7. Reassemble in reverse order and tighten clamps. Make sure to place paper towels along fuel lines before you secure them so that they don’t get dirty with leftover diesel vapors!

Steps 8. Reconnect battery cables, clean up any spills from the engine or ground (optional) and start truck back up.

Check for leaks around filters and other connections as well as between filter housing cover and intake manifold joints near the top of the new Duramax Filter.

If there are no visible leaks then your vehicle should be good to go!


So, you’ve read our post about the importance of fuel filters and how to identify if your Duramax needs a new one. We hope that this information will help you make an informed decision on whether or not it is time for a change. But what should you do with all of this newfound knowledge? That’s easy!

Check out the best fuel filter for Duramax here. You can also subscribe to be notified when we publish more blog posts like this. Don’t forget to follow us on Facebook! Thanks again for reading and we’ll see ya around!

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