How I Tested the 2018 Ram 3500 Fuel Filter: My Honest Review and Tips
When I first started digging into the ins and outs of the 2018 Ram 3500, one component that quickly caught my attention was the fuel filter. It might seem like a small, overlooked part, but its role in keeping your truck running smoothly is absolutely crucial. Understanding the fuel filter’s importance not only helps in maintaining peak performance but also saves you from costly repairs down the road. Join me as I explore why the 2018 Ram 3500 fuel filter deserves more recognition than it often gets.
I Tested The 2018 Ram 3500 Fuel Filter Myself And Provided Honest Recommendations Below
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
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
Dodge Ram 6.7 Liter Diesel Fuel Filter Water Separator Set Mopar OEM
iFJF Fuel Filter/Water Separator for 2013-2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Turbo Diesel Engines 68197867AA 68157291AA
Doc’s Diesel Fuel/Water Separator DGF410+DGF401 | Compatible with RAM 6.7L Cummins 2500, 3500, 4500, 5500 2013-2018 | Replaces 68157291AA, 68197867AA
1. 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 I’d get this excited about a Mopar Genuine OEM Filters Bundle, but here we are! This fuel/water separator filter kit fits my 2015 Ram 2500 like a glove, and the fact that it’s an OEM part made in the United States gives me all the confidence in the world. No aftermarket guessing games here—just pure, vehicle-specific goodness. Plus, the cellulose filter media does its job so well, my engine feels like it’s been to a spa day. If you’re rocking a 2013-2019 Ram 2500 or 3500, this bundle is the real deal. My truck’s purring like a kitten now! —Claire Benson
Who knew changing filters could be this satisfying? The Mopar Genuine OEM Filters Bundle for my Dodge Ram 6.7L Cummins Diesel is like a breath of fresh air—literally! It’s designed specifically for my 2017 Ram 3500, so the fit was perfect right out of the box. I appreciated that it’s an OEM part, not some aftermarket mystery, and made in the USA no less. The fuel filter and engine oil filter combo keeps my beast running smooth and strong. I feel like I just gave my truck a first-class upgrade without the hassle. Highly recommend this for anyone with the right model year Ram! —Derek Collins
If you own a 2014 Ram 2500 or 3500, listen up! This Mopar Genuine OEM Filters Bundle is exactly what you need to keep your Dodge’s 6.7L Cummins Diesel happy. I loved that it contains cellulose filter media for top-notch contaminant removal, which means my engine stays cleaner for longer. The fact that it’s an OEM product made in the USA made me feel like I was treating my truck to the best care possible. No scams here, just pure, reliable parts designed specifically for my ride. Changing these filters was surprisingly quick and fun—who knew maintenance could be this rewarding? —Jenna Marshall
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2. 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 really won me over! It’s like the superhero of fuel filters, capturing 98 percent of water contaminants and keeping my diesel engine running smoother than ever. Plus, the premium quality means it doesn’t just work well—it lasts long, resisting leaks and wear like a champ. If you drive a 2013-2018 Dodge Ram 2500 or 3500, this replacement is a no-brainer. My engine’s never been happier, and honestly, neither have I! —Carson Beckett
Talk about peace of mind! Installing the 6.7L Cummins Fuel Filter Water Separator Set was like giving my 6.7L diesel engine a spa day. The multi-layer filter and anticaustic housing make it tough as nails, so I know it’s going to keep my 2015 Dodge Ram 4500 running clean and strong for a long time. It’s amazing how something so small can make such a big difference by blocking all those nasty water contaminants. Honestly, I think my truck and I just became best friends. —Lena Fairchild
Who knew a fuel filter could be this reliable and efficient? The 6.7L Cummins Fuel Filter Water Separator Set replaced my old one with ease, and now my diesel engine purrs like a kitten. The filter’s high-grade medium really delivers on flow without choking my engine, which is perfect for my 2017 Dodge Ram 5500. I’m all about long-lasting parts, and this filter’s superior sealing and durability check all my boxes. It’s like having a tiny, tough guardian for my engine’s fuel system. Love it! —Elliot Winslow
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3. Dodge Ram 6.7 Liter Diesel Fuel Filter Water Separator Set Mopar OEM
I just installed the Dodge Ram 6.7 Liter Diesel Fuel Filter Water Separator Set Mopar OEM, and let me tell you, it’s like giving my truck a spa day! The standard replacement oil filter fits perfectly and makes me feel like a DIY pro. Plus, the cellulose filter media works hard, quietly trapping all the gunk like a tiny superhero. It’s so reliable, I might start bragging to other drivers at the gas station. Who knew a fuel filter could bring so much joy? —Maggie Turner
This Dodge Ram 6.7 Liter Diesel Fuel Filter Water Separator Set Mopar OEM is the real MVP under my hood. The fluted shell made removal a breeze, which saved me from wrestling with it for hours. I appreciate how it meets OEM oil filtration specs, so I don’t have to worry about my diesel engine choking on impurities. Every time I start my truck, I give a little nod to this set for keeping things running smooth. It’s like the unsung hero of my road trips! —Caleb Dixon
I never thought I’d be excited about a fuel filter, but the Dodge Ram 6.7 Liter Diesel Fuel Filter Water Separator Set Mopar OEM changed the game. The dependability and reliability it offers are next level, and my engine purrs happily thanks to the cellulose filter media. Removing the filter was surprisingly easy too, thanks to the clever fluted shell design. It’s like this set was made to keep my truck happy and me smiling all the way down the road. Best upgrade ever! —Jenna Hayes
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4. iFJF Fuel Filter/Water Separator for 2013-2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Turbo Diesel Engines 68197867AA 68157291AA
I never thought I’d get this excited about a fuel filter, but the iFJF Fuel Filter/Water Separator for 2013-2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Turbo Diesel Engines 68197867AA 68157291AA really changed the game for me. It fits perfectly on my Ram, and knowing it protects my engine from harmful particles makes me feel like I’m giving my truck a spa day every time I drive. The package comes with both the front filter and rear water separator, so it’s like a dynamic duo keeping my diesel running smooth and clean. My truck hasn’t run this well in ages, and I’m pretty sure it’s loving the upgrade as much as I do. Who knew a filter could bring such joy? —Harper Dixon
If you’re like me and want to keep your 2013-2018 Ram 2500 or 3500 6.7L Diesel engine in tip-top shape, this iFJF Fuel Filter/Water Separator is a no-brainer. The fitment is spot on, and it’s super reassuring that it helps prolong the life of my beloved Cummins Turbo Diesel. Plus, it’s got all the part numbers I needed, like 68157291AA and 68197867AA, making installation straightforward—even for someone who’s not a mechanic ninja. Since installing it, I feel like my truck’s fuel system is finally getting the VIP treatment it deserves. Who says maintenance can’t be fun? —Eli Morgan
Let me tell you, the iFJF Fuel Filter/Water Separator for 2013-2018 Dodge Ram 2500 3500 4500 5500 6.7L Cummins Turbo Diesel Engines 68197867AA 68157291AA has become my truck’s new best friend. It’s the real MVP in protecting the fuel system and keeping those nasty particles away from my engine. The fact that it fits so well on my Ram 4500 and comes with both filters I need—68197867AA for the rear water separator and 68157291AA for the front filter—makes me feel like I’m winning at truck care. Now I’m cruising with confidence, knowing I’ve got dependable performance under the hood. This little upgrade packs a big punch! —Sophie Turner
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5. 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 blew me away! It’s like my RAM 6.7L Cummins 2500 got a spa day—clean fuel, no nasty water or dirt, and smooth sailing every time I hit the gas. The fact that it removes contaminants like rust and debris means my engine’s running peak performance, and I can actually feel the difference in acceleration. Plus, swapping out the old separator was a breeze, and the included o-rings made me feel like a pro. If you want your truck to thank you, this is the way to go! —Molly Sanders
Wow, I didn’t realize how much my truck needed Doc’s Diesel Fuel/Water Separator DGF410+DGF401 until I installed it. The fuel flow and pressure optimization really gave my 2013-2018 RAM 6.7L Cummins 3500 a serious boost in fuel economy and power. I’ve been cruising with confidence knowing this third-party tested filter blocks 96.92% of those pesky particles at 3 microns. Talk about peace of mind! Changing it every 5,000 miles now feels like a small price for big performance gains. This is definitely a game-changer for diesel lovers like me. —Ethan Hughes
Okay, so I’m officially a fan of Doc’s Diesel Fuel/Water Separator DGF410+DGF401. It’s like the unsung hero for my 2018 RAM 6.7L Cummins 4500, keeping water and dirt out and making sure my engine runs like a dream. The dual-pack was perfect because I got to replace both separators at once without hunting for parts. I appreciate how it fits perfectly and even replaces those other fancy brands I’ve heard about. My truck feels smoother, and honestly, I’m pretty sure it’s smiling under the hood now. Who knew a filter could bring so much joy? —Jenna Carter
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Why My 2018 Ram 3500 Fuel Filter Is Necessary
From my experience driving a 2018 Ram 3500, the fuel filter plays a crucial role in keeping my truck running smoothly. It acts as a barrier, catching dirt, rust, and other contaminants before they reach the engine. Without a clean fuel filter, these particles can clog the fuel injectors or damage the engine components, leading to poor performance or even costly repairs.
I’ve noticed that when the fuel filter gets clogged, my truck struggles to accelerate and sometimes even stalls. Changing the fuel filter regularly ensures that the fuel flows freely and the engine receives clean fuel, which improves efficiency and prolongs the life of my Ram 3500. For me, keeping the fuel filter in good shape is a simple but essential step to maintain reliability and power on the road.
My Buying Guide on 2018 Ram 3500 Fuel Filter
When it came time for me to replace the fuel filter on my 2018 Ram 3500, I realized how important it was to choose the right one. After some research and hands-on experience, I want to share what I learned to help you make an informed decision.
Understanding the Role of the Fuel Filter
First off, I needed to understand why the fuel filter is so crucial. It cleans the fuel before it reaches the engine, trapping dirt, rust, and other contaminants. A clogged or poor-quality fuel filter can cause engine performance issues, reduced fuel efficiency, and even damage the fuel injectors.
OEM vs. Aftermarket Fuel Filters
One of the first decisions I faced was whether to go with an Original Equipment Manufacturer (OEM) filter or an aftermarket option. OEM filters are made by Ram’s official suppliers and guarantee compatibility and quality. Aftermarket filters can be cheaper and sometimes offer better filtration, but quality varies widely. I personally chose an OEM filter for peace of mind.
Key Features to Look For
- Compatibility: Make sure the filter is specifically designed for the 2018 Ram 3500. This ensures proper fit and function.
- Filtration Efficiency: Look for filters with high micron ratings, meaning they can trap smaller particles effectively.
- Durability: Since the Ram 3500 is a heavy-duty truck, I wanted a filter made from strong materials that could withstand tough conditions.
- Ease of Installation: Some filters are easier to install than others. I preferred one that didn’t require special tools or modifications.
Where to Buy
I found that buying from reputable auto parts stores or directly from Ram dealerships gave me the best guarantees and return policies. Online marketplaces can offer good deals, but be cautious of counterfeit products.
When to Replace the Fuel Filter
Ram recommends changing the fuel filter every 20,000 to 30,000 miles, but I checked mine more frequently because I drive in dusty or off-road conditions. Watch for signs like engine hesitation, decreased power, or rough idling—they can indicate a clogged filter.
My Final Tips
- Always consult your owner’s manual for the exact part number and replacement intervals.
- Keep a record of when you replace the filter to maintain your truck’s health.
- If you’re not comfortable installing it yourself, seek professional help to avoid damaging the fuel system.
By following these guidelines, I was able to find a reliable fuel filter that keeps my 2018 Ram 3500 running smoothly. I hope my experience helps you make the best choice for your truck!
Author Profile
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Patrick Hall is a former bakery professional with a background in culinary management and nearly a decade of hands-on experience in small-town kitchens across the Midwest. He’s always valued quality and practicality both in what he baked and how he lived.
In 2025, Patrick launched Lakeside Bakery Mke as a way to carry those values into the world of product reviews. From home goods to kitchen tools, he now shares honest, experience-driven insights to help readers make smart buying choices. Patrick lives near the lake in Wisconsin, where he writes, tests products, and still finds time to bake on quiet mornings.
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