If you drive a 2017 Ram 2500 Diesel, keeping the fuel filter clean is essential to protect your engine and maintain fuel efficiency. Diesel engines demand high fuel quality, and even small amounts of dirt, rust, or water can harm injectors and reduce performance.
A clogged filter can cause hard starts, poor acceleration, and even engine damage. Regular replacement ensures clean fuel delivery and smooth operation. Most U.S. diesel truck owners replace their Mopar fuel filters every 15,000–20,000 miles, depending on driving conditions.
Whether you own a 2017, 2018, or 2019 Ram 2500 or Ram 3500 diesel, this guide walks you through each step clearly and safely.
What Tools and Parts Are Needed for the Job?
Before starting, prepare all tools and replacement parts. Being organized helps avoid delays once you start.
Tools and Materials:
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Mopar 6.7 fuel filter or Mopar diesel fuel filter kit (for 2014–2019 Cummins engines)
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3/8-inch ratchet or wrench
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Drain pan
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Fuel line disconnect tool (optional)
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Shop towels or rags
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Safety gloves and eyewear
Pro Tip: Always use genuine Mopar fuel filters for 6.7 Cummins engines. They’re designed specifically for Ram trucks, offering a perfect fit and superior filtration for both 2017 and newer models like the 2018 Ram 2500 and 2019 Ram 3500 Diesel.
How Do You Replace the Fuel Filter on a 2017 Ram 2500 Diesel?
Follow these step-by-step instructions to replace the filter safely and effectively.
Step 1: Park Safely and Prepare
Park your truck on level ground and turn off the ignition. Allow the engine to cool down. Engage the parking brake.
Under the truck, you’ll find the primary fuel filter mounted along the driver’s side frame rail. The secondary filter is on top of the engine near the fuel rail.
Step 2: Relieve Fuel Pressure
Turn the ignition key to the “on” position (without starting the engine). Wait about 10 seconds for the fuel pump to run, then turn it off. This helps relieve pressure inside the lines.
Step 3: Drain the Filter Housing
Place a drain pan beneath the primary filter. Open the drain valve to remove any excess fuel. This step helps prevent spillage when removing the old filter.
Dispose of the drained diesel responsibly. In the United States, many auto parts stores and service centers accept used fuel for recycling.
Step 4: Remove the Old Fuel Filter
Use a wrench or ratchet to loosen the filter housing cap. Remove the old filter element and gasket.
Clean the inside of the housing using a lint-free rag. Check for dirt or debris, which can affect the seal of the new filter.
Step 5: Install the New Filter
Insert the new Mopar 6.7 fuel filter into the housing. Make sure the gasket is properly seated. Tighten the cap firmly, but don’t over-torque it.
If your truck has both a primary and secondary filter (as most 2017–2019 Ram 2500 and Ram 3500 models do), repeat this process for both units.
Step 6: Prime the Fuel System
Priming is essential to remove air from the system. Turn the ignition key to the “on” position for 30 seconds, then back off. Repeat 3–4 times.
This process allows the pump to fill the new filter with fuel and ensures smooth starting.
Step 7: Start the Engine and Inspect
Start the engine and let it idle for a few minutes. Listen for any unusual noises. Check both filter housings for leaks.
If the engine runs smoothly and no leaks are visible, your fuel filter replacement was successful.
How Often Should You Replace the Fuel Filter?
Ram recommends replacing the fuel filter every 15,000 to 20,000 miles. However, if you drive in dusty regions, tow heavy loads, or use biodiesel, you may need to change it sooner.
This maintenance schedule applies to multiple models:
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Fuel filter for 2018 Ram 2500
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Fuel filter for 2019 Ram 2500
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Fuel filter for 2019 Ram 3500 Diesel
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Fuel filters for 2018 Ram 3500
All these models use a similar system powered by the 6.7 Cummins diesel engine.
Why Choose a Mopar Fuel Filter for Cummins Engines?
Genuine Mopar fuel filters are built to OEM specifications for 6.7L Cummins engines (2014–2019). They’re designed to protect your injection system from water, dirt, and other contaminants that can lead to costly repairs.
Benefits of using Mopar filters:
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High-efficiency filtration
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Excellent water separation
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Precise fit and easy installation
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Long-lasting durability
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Trusted OEM quality
Whether you drive a 2017 Ram 2500, 2018 Ram 3500, or a 2019 Ram 3500 Diesel, the Mopar fuel filter 6.7 Cummins 2014–2015 versions share the same engineering excellence. This ensures compatibility and top-tier performance across model years.
Where Can You Buy Mopar Fuel Filters in the USA?
You can find genuine Mopar fuel filters at authorized dealers, certified online stores, or specialized retailers for diesel truck parts. When buying online, look for trusted U.S.-based sellers who provide OEM parts with warranty coverage.
Buying a genuine Mopar diesel fuel filter ensures long-term reliability — a small investment that protects your engine for thousands of miles.
Compatibility Across Ram Diesel Models
The replacement process and parts in this guide are nearly identical for:
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2017 Ram 2500 Diesel
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2018 Ram 2500 Diesel
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2019 Ram 2500 Diesel
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2018 Ram 3500 Diesel
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2019 Ram 3500 Diesel
All use the Mopar 6.7 fuel filter designed for the Cummins 6.7L engine family. So, whether your truck is a 2014 or 2019 model, Mopar’s OEM filter line guarantees a precise fit.
Final Thoughts
Replacing the fuel filter on your 2017 Ram 2500 Diesel (and compatible 2018–2019 Ram models) is a simple but vital maintenance task. It keeps your engine running clean, efficient, and powerful.
Whether you’re towing a trailer in Texas or driving through the Rockies, using a genuine Mopar 6.7 fuel filter guarantees long-term engine health and performance.
Protect your investment, replace your Mopar diesel fuel filter on schedule and enjoy worry-free driving across America.
FAQs
1. How do I know if my fuel filter needs replacement?
You may experience rough idling, slow acceleration, or hard starting. These are signs that your filter is clogged or dirty.
2. Can I use the same Mopar filter for 2014–2019 Cummins engines?
Yes. The Mopar fuel filter 6.7 Cummins 2014–2015 models are compatible with newer versions, including 2017–2019 Ram 2500 and 3500 diesels.
3. How long does it take to replace the fuel filter?
On average, it takes about 30–45 minutes for a full replacement.
4. What happens if I skip changing the fuel filter?
Skipping replacements can lead to injector wear, fuel pump failure, and reduced performance all costly to fix.
5. Are Mopar fuel filters better than aftermarket ones?
Yes. Mopar filters are engineered for OEM precision and protection, ensuring your Cummins engine runs efficiently under U.S. driving conditions.
