Doc's Diesel Fuel/Water Separator for RAM 6.7L Cummins 2013–2018 — Replaces 68197867AA, 3‑Micron

Doc's Diesel DGF410 is a direct-fit fuel/water separator engineered to remove water and contaminants from diesel for RAM 6.7L Cummins 2500–5500 trucks (2013–2018), replacing Mopar 68197867AA.

Keeping diesel free of water, rust, dirt, and debris is essential for reliable injection and long engine life. The DGF410 from Doc's Diesel is built to match OE fitment and filtration performance for 2013–2018 Ram 6.7L Cummins engines, offering high-efficiency 3-micron filtration and included sealing hardware so you get a complete swap at service time.

How does this separator protect my Cummins fuel system?

The DGF410 traps particulates and separates water before fuel reaches injectors and high-pressure pumps, reducing wear and the risk of corrosion. By keeping contaminants out of sensitive components, it helps maintain consistent fuel flow and pressure under load.

• 3-micron rated media removes fine particles with 96.92% efficiency.
• Water separation layer captures and drains free water from the system.
• OEM-style o-rings included for a correct seal and leak-free installation.

Will it fit my RAM 2500, 3500, 4500, or 5500 with 6.7L Cummins?

Yes — this unit is compatible with 2013 through 2018 Ram trucks equipped with the 6.7L Cummins diesel. Doc's Diesel engineered the DGF410 to replace Mopar 68197867AA and cross-references common aftermarket part numbers for straightforward replacement.

• Direct replacement for Mopar 68197867AA fitment.
• Also cross-references WIX WF10112, Baldwin BF46031, Purolator F51408, Premium Guard DF99085.
• Comes with the sealing o-rings needed to match factory installation.

How often should I replace the fuel/water separator?

Service intervals vary with operating conditions, fuel quality, and warranty requirements, but a practical guideline is every 5,000–10,000 miles, not to exceed 15,000 miles in typical use. Change it sooner if you notice milky fuel, visible water in the bowl, or reduced engine performance.

• Inspect during every oil change or major service.
• Replace sooner with poor-quality or high-sulfur fuel sources.
• Follow manufacturer warranty recommendations as a priority.

What performance does the filter media deliver?

Doc's Diesel subjects its separators to third-party testing and rates this model at 3 microns with a 96.92% efficiency for contaminant capture. That level of filtration balances protection for modern high-pressure injection systems while minimizing flow restriction under demanding driving conditions.

• 3-micron nominal rating for fine particle removal.
• High surface-area media to extend service life between changes.
• Engineered to maintain fuel flow needed for heavy-duty applications.

Who is this for? Owners and technicians of 2013–2018 Ram 6.7L Cummins 2500, 3500, 4500, and 5500 trucks who want an OE-fit, high-efficiency fuel/water separator that replaces Mopar 68197867AA and common aftermarket equivalents. Ideal for fleet maintenance, towing rigs, and diesel enthusiasts who prioritize contaminant control and consistent engine performance.