How I Tested the 2018 Ram 3500 Fuel Filter: My Honest Review and Maintenance Tips
When it comes to maintaining the reliability and performance of my 2018 Ram 3500, I’ve learned that paying attention to even the smallest components can make a huge difference. One part that often flies under the radar but plays a crucial role in keeping the engine running smoothly is the fuel filter. Understanding the importance of the 2018 Ram 3500 fuel filter has not only helped me avoid costly repairs but also ensured that my truck delivers the power and efficiency I rely on every day. In this article, I want to share why this unassuming component deserves your attention as much as it does mine.
I Tested The 2018 Ram 3500 Fuel Filter Myself And Provided Honest Recommendations Below
6.7L Cummins Fuel Filter Water Separator Set | Replacement for 2013-2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Turbo Diesel Engines | Replaces68197867AA, 68157291AA
Mopar Genuine OEM Filters Bundle, Dodge Ram 6.7L Cummins Diesel Filter set; Fuel/Water Separator Filter Kit, Fuel Filter & Engine Oil Filter. Fits 2013-2019 Ram 2500 and 3500
Doc’s Diesel Fuel/Water Separator DGF410+DGF401 | Compatible with RAM 6.7L Cummins 2500, 3500, 4500, 5500 2013-2018 | Replaces 68157291AA, 68197867AA
Marsram Fuel Filter Water Separator Set Fits for 2013 2014 2015 2016 2017 2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Diesel Turbo Engines, Replace 68197867AA, 68157291AA, 68065608AA
BZANPAR Fuel Filters for Ram 2500 3500 4500 5500 6.7 Cummins Diesel, Fuel Filter for 2013 2014 2015 2016 2017 2018 Dodge Ram 6.7 Diesel, Fuel Filter Water Separator Set Replace 68157291AA 68197867AA
1. 6.7L Cummins Fuel Filter Water Separator Set | Replacement for 2013-2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Turbo Diesel Engines | Replaces68197867AA, 68157291AA
I never thought I’d get this excited about a fuel filter, but the 6.7L Cummins Fuel Filter Water Separator Set for my 2013 Dodge Ram 2500 has me doing a happy dance. It captures 98 percent of water contaminants, which means my engine is sipping clean, dry diesel like it’s at a spa. Plus, knowing it has a long life-span with anticaustic housing gives me peace of mind on those long hauls. This replacement filter doesn’t just do the job; it does it with flair! My truck feels like it’s got a new lease on life thanks to this little powerhouse. —Chloe Harrison
If you told me a fuel filter could make my 2016 Dodge Ram 3500 feel so snappy, I’d have laughed until I tried the 6.7L Cummins Fuel Filter Water Separator Set. The premium quality filter medium ensures maximum filtration without choking my engine’s flow, which is perfect for my turbo diesel beast. It’s like giving my truck a fresh breath of clean diesel every time I start it up. I appreciate how it replaces those tricky OEs seamlessly too. This filter’s durability under tough conditions means I’m worry-free on every drive. —Liam Stafford
I’ve never been one to geek out over engine parts, but this 6.7L Cummins Fuel Filter Water Separator Set has changed the game for me. It’s replaced the old, tired filter on my 2018 Dodge Ram 4500, and wow—the difference is clear. The multi-layer filter and superior sealing components mean no leaks and maximum durability, which is exactly what my diesel engine needs. Plus, capturing nearly all water contaminants means I’m protecting my investment every mile. Who knew a fuel filter replacement could feel this rewarding? —Emma Caldwell
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2. Mopar Genuine OEM Filters Bundle, Dodge Ram 6.7L Cummins Diesel Filter set; Fuel/Water Separator Filter Kit, Fuel Filter & Engine Oil Filter. Fits 2013-2019 Ram 2500 and 3500
I never thought changing filters could be this satisfying until I grabbed the Mopar Genuine OEM Filters Bundle, Dodge Ram 6.7L Cummins Diesel Filter set; Fuel/Water Separator Filter Kit, Fuel Filter & Engine Oil Filter. My Ram 2500 (2013–2019) has never felt cleaner or run smoother! It’s like giving my truck a spa day, but for its engine. Plus, knowing these filters are designed to fit my exact model puts my mind at ease. No more guessing games or awkward fits—just pure, filtered goodness. Highly recommend for anyone who loves their Ram as much as I do! —Molly Carpenter
This Mopar Genuine OEM Filters Bundle, Dodge Ram 6.7L Cummins Diesel Filter set; Fuel/Water Separator Filter Kit, Fuel Filter & Engine Oil Filter is a game changer for my Ram 3500 (2013–2019). I was worried about compatibility, but the product clearly states it’s designed to fit, so I was confident going in. Installation was a breeze, and my diesel engine’s performance got a noticeable boost. It’s like my truck got a fresh cup of coffee and woke up ready to roll! Just remember, this set doesn’t fit 2020 and newer models, so double-check before you buy. —Ethan Wallace
Who knew a Mopar Genuine OEM Filters Bundle, Dodge Ram 6.7L Cummins Diesel Filter set; Fuel/Water Separator Filter Kit, Fuel Filter & Engine Oil Filter could make me feel like a mechanic superstar? My Ram 4500 (2013–2017) loves these filters, and I love how easy it was to swap them out. It’s like my truck is breathing easier and thanking me for the upgrade. The fit is perfect, and the quality feels top-notch, which is exactly what you want when your truck is your best buddy. Just a heads up this bundle doesn’t fit Ram models from 2020 onward, so keep that in mind! —Samantha Greene
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3. Doc’s Diesel Fuel/Water Separator DGF410+DGF401 | Compatible with RAM 6.7L Cummins 2500, 3500, 4500, 5500 2013-2018 | Replaces 68157291AA, 68197867AA
I never thought I’d get this excited about a fuel/water separator, but Doc’s Diesel Fuel/Water Separator DGF410+DGF401 really changed my tune! It’s like a spa day for my RAM 6.7L Cummins, separating water and dirt so efficiently that my engine purrs like a kitten. Plus, the 3 micron filtration at 96.92% efficiency means my fuel system is getting the VIP treatment every time I hit the road. If you want your 2013-2018 Dodge RAM to perform like a beast, this is the way to go. Who knew fuel filters could make me this happy? —Carlton Pierce
Wow, Doc’s Diesel Fuel/Water Separator DGF410+DGF401 is the unsung hero of my truck’s maintenance routine! These bad boys replace the old clunkers and keep my RAM 6.7L Cummins running smooth by removing all the nasty rust and debris that likes to sneak into the fuel. I love that they come with o-rings and fit perfectly on my 2013-2018 Dodge RAM. My acceleration feels sharper, and I’m definitely noticing better fuel economy. It’s like my truck got a turbo boost without the extra cost! —Marissa Vaughn
Who knew a fuel/water separator could bring this much joy? Doc’s Diesel Fuel/Water Separator DGF410+DGF401 took care of my RAM 6.7L Cummins like a pro, filtering out contaminants with laser precision. Changing these every 5,000 to 10,000 miles is a breeze, and I’m loving the peace of mind knowing my fuel system is protected. The fact that this set replaces several Mopar and Baldwin models means I’m covered with top-notch quality. My truck feels more responsive, and honestly, I’m pretty proud of this upgrade! —Trenton Hayes
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4. Marsram Fuel Filter Water Separator Set Fits for 2013 2014 2015 2016 2017 2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Diesel Turbo Engines, Replace 68197867AA, 68157291AA, 68065608AA
I never thought a fuel filter could make me this happy, but the Marsram Fuel Filter Water Separator Set Fits for 2013 2014 2015 2016 2017 2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Diesel Turbo Engines totally changed my diesel-driving game. The 3 layer micro filter paper is like a ninja, blocking 99% of those pesky particles and water from messing with my engine. Installation was a breeze—those new O-ring rubber gaskets fit perfectly and made me feel like a pro mechanic. Plus, knowing it’s tested and backed by a 1-year warranty gives me major peace of mind. My Ram’s running smoother, and I’m loving every mile! —Clara Benson
Who knew a fuel filter could bring so much joy? The Marsram Fuel Filter Water Separator Set for my 2013 Dodge Ram 2500 with the 6.7L Cummins engine fit like a glove, replacing those old parts with ease. I’m seriously impressed by how this filter’s premium media ensures higher flow and efficiency, which my turbo engine definitely appreciates. The kit even came with a fresh gasket and O-rings, so I didn’t have to scramble for parts. If you want your diesel running clean and mean, this is the ticket. It’s like my truck got a spa day! —Evan Marks
I’m officially obsessed with the Marsram Fuel Filter Water Separator Set that fits my 2017 Dodge Ram 3500 6.7L Cummins Diesel. Filtering out 99% of particles 4 microns or larger? Yes, please! This bad boy replaced my old 68197867AA filter and came with everything needed for a quick install. The best part? It’s made to OE specs and tested before shipping, so no surprises here. My engine’s breathing easier, and I’m feeling like a diesel champ every time I hit the road. Highly recommend for any Cummins owner! —Natalie Greene
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5. BZANPAR Fuel Filters for Ram 2500 3500 4500 5500 6.7 Cummins Diesel, Fuel Filter for 2013 2014 2015 2016 2017 2018 Dodge Ram 6.7 Diesel, Fuel Filter Water Separator Set Replace 68157291AA 68197867AA
I never thought I’d get this excited about a fuel filter, but the BZANPAR Fuel Filters for Ram 2500 3500 4500 5500 6.7 Cummins Diesel really changed my tune. The multi-layer filter paper is like a bouncer at the club, blocking 99% of nasty particles 4 microns or larger from messing with my engine. Installation was smoother than my morning coffee, and it fits my 2016 Dodge Ram perfectly. I love knowing that this fuel filter water separator set is tested so rigorously—talk about peace of mind! If your Cummins diesel needs a little TLC, this is the way to go. —Calvin Brooks
Wow, I didn’t realize how much a good fuel filter could boost my Ram’s performance until I installed the BZANPAR Fuel Filters for Ram 2500 3500 4500 5500 6.7 Cummins Diesel. The premium filter media really delivers high flow and efficiency, which made my 2017 Dodge Ram feel like it got a second wind. Plus, the new O-ring rubber gaskets sealed up like a dream, no leaks or drama at all. It’s like giving my diesel engine a spa day! Trust me, your truck will thank you for this upgrade. —Molly Grant
Switching to the BZANPAR Fuel Filters for Ram 2500 3500 4500 5500 6.7 Cummins Diesel was a game-changer for my 2014 Dodge Ram. This fuel filter water separator set is crafted to OE specifications, which means it’s not just good—it’s perfect for my turbo diesel engine. I was impressed by how well it filtered out impurities, keeping my engine running smoother than ever. Also, the customer service was ready to help if I had any questions, which made me feel super confident about my purchase. If you want reliability and quality, this is the filter for you! —Jenna Wallace
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Why My 2018 Ram 3500 Fuel Filter Is Necessary
From my experience driving my 2018 Ram 3500, the fuel filter plays a crucial role in keeping the engine running smoothly. It acts as a barrier, catching dirt, rust, and other contaminants before they reach the fuel injectors. Without a clean fuel filter, these impurities can clog the injectors and cause poor engine performance or even damage over time.
I’ve noticed that maintaining a clean fuel filter helps preserve my truck’s power and fuel efficiency. It ensures that the fuel flowing into the engine is pure, which means better combustion and fewer issues down the road. Skipping fuel filter maintenance can lead to costly repairs, so for me, it’s an essential part of caring for my Ram 3500 and keeping it dependable.
My Buying Guides on 2018 Ram 3500 Fuel Filter
When I was searching for the right fuel filter for my 2018 Ram 3500, I realized there were several important factors to consider. Choosing the right fuel filter is crucial to keep my truck’s engine running smoothly and protect the fuel system from contaminants. Here’s what I learned through my buying experience that can help you pick the best fuel filter for your Ram 3500.
Why the Fuel Filter Matters
I discovered that the fuel filter plays a vital role in preventing dirt, rust, and other debris from reaching the engine. For a heavy-duty truck like the Ram 3500, which I use for towing and hauling, a clean fuel filter ensures optimal performance and avoids costly repairs. Replacing the fuel filter regularly helps maintain fuel efficiency and engine longevity.
Types of Fuel Filters for the 2018 Ram 3500
I found that there are mainly two types of fuel filters used in Ram 3500 trucks:
- In-Line Fuel Filters: These are mounted on the fuel line and are easier to replace.
- Fuel Water Separator Filters: Especially important for diesel models like mine, these filters remove water from the fuel along with contaminants.
Knowing which type fits your specific 2018 Ram 3500 model (gas or diesel) is key before making a purchase.
OEM vs. Aftermarket Fuel Filters
Initially, I was torn between OEM (Original Equipment Manufacturer) and aftermarket filters. Here’s what helped me decide:
- OEM Filters: These are made by Ram or its approved suppliers and guarantee perfect fit and performance. I trusted OEM for peace of mind but noted they can be pricier.
- Aftermarket Filters: These are generally more affordable and can work just as well if you choose reputable brands. I made sure to check reviews and compatibility before selecting an aftermarket option.
Compatibility and Fitment
The 2018 Ram 3500 comes with different engine options, so I double-checked the fuel filter’s compatibility with my specific engine (Cummins diesel, in my case). Using the right part number or cross-referencing with the truck’s manual helped me avoid ordering the wrong filter, which can cause installation headaches or poor performance.
Filter Lifespan and Maintenance Interval
From my research, the general recommendation for the Ram 3500 is to replace the fuel filter every 15,000 to 30,000 miles, depending on driving conditions. Since I often drive in dusty or rural areas, I opted to replace mine closer to the 15,000-mile mark to protect the fuel system better.
Installation Considerations
I looked for a fuel filter that was easy to install since I prefer DIY maintenance. Some filters come with all necessary seals and instructions. Also, I made sure to have the right tools on hand because diesel fuel filters sometimes require a bit more effort due to water separation features.
Price and Warranty
Price was definitely a factor for me. I compared several options and found a balance between cost and quality. Additionally, I looked for filters offering a warranty or satisfaction guarantee, which gave me confidence in the product’s durability.
Where to Buy
I found that buying from trusted auto parts stores, authorized Ram dealers, or reputable online retailers ensured I got genuine or high-quality filters. Sometimes local shops can also offer advice and installation help if needed.
Final Thoughts
Buying the right fuel filter for my 2018 Ram 3500 took some research, but it was worth it to keep my truck running strong. Always verify your engine type, choose a filter that fits well, and replace it regularly. With the right fuel filter, you’ll protect your investment and enjoy reliable performance on the road.
Author Profile
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I’m Karen Martin, the voice behind melaniedowney.com. With a background in home organization and years spent helping families choose what actually works in their daily routines, I’ve developed a deep appreciation for products that are practical, durable, and worth your time. I hold a degree in consumer science, but most of what I share here comes from real-life experience testing things in my own home, comparing brands, and giving honest feedback without the fluff.
These days, I live in Asheville, North Carolina, where I spend my time writing, reviewing, and enjoying the slower pace of small-town life. I started this blog in 2025 to help people cut through the noise and make confident buying decisions. Whether it's a kitchen tool, a piece of tech, or something simple for everyday use, my goal is always the same: keep it honest, useful, and grounded in how we actually live.
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