Doc's Diesel Filter Maintenance Kit for 6.7L Cummins RAM 2013–2018 — Complete Fuel, Oil & Air Filter Set

Doc's Diesel complete filter maintenance kit supplies matched fuel-water separators, oil, engine air, and cabin air filters engineered for 2013–2018 Ram 6.7L Cummins engines.

This all-in-one service pack bundles every filter needed for a routine maintenance interval so you can replace all elements that protect your engine and fuel system at once. Each component is purpose-matched to the 6.7L Cummins application and independently tested for particle and water separation efficiency. The kit replaces multiple individual parts and saves time during scheduled servicing while helping you follow manufacturer-recommended change intervals.

Which filters are included and why do they matter?

The kit contains a DGF410 and DGF401 fuel water separator set, a D5335 oil filter, a DPA6314 engine air filter, and a D3705 cabin air filter. Together they manage contaminants in fuel, oil, intake air, and cabin air so engine components and vehicle occupants stay protected between services.

• DGF410 fuel water separator — high-efficiency water and particle removal for primary protection
• DGF401 secondary fuel water separator — additional micron filtration before the fuel pump
• D5335 oil filter — engine oil filtration meeting 99% efficiency for contaminant capture
• DPA6314 engine air filter — traps dust and particulates to preserve turbo and cylinders
• D3705 cabin air filter — improves HVAC air quality for driver comfort

How do the fuel water separators perform compared to OE parts?

Independent testing shows the DGF410 removes 96.92% of particles down to 3 microns and the DGF401 removes 93.48% down to 3 microns, matching or exceeding many OE separator characteristics for water and fine particulate capture. These results mean cleaner fuel reaches the injection system and reduced risk of injector wear.

• High micron efficiency testing for both DGF models
• Designed to manage water and debris before fuel reaches high-pressure components
• Drop-in fitments intended for 2013–2018 Ram 6.7L Cummins applications

When should I change these filters and how do they fit my service routine?

Replace filters according to your vehicle manufacturer’s recommendations and warranty schedule. Fuel/water separators are typically replaced every 5,000–10,000 miles, with a suggested maximum of 15,000 miles depending on fuel quality and operating conditions.

• Follow OEM service intervals in the owner’s manual as your primary guide
• Shorten intervals if you operate in dusty, wet, or heavy-duty environments
• One kit supplies all filters for a coordinated service stop to save time

Will these components fit my specific Ram truck year and configuration?

The kit is engineered for Ram trucks with the 6.7L Cummins from 2013 through 2018. Use the fitment card on the product page to confirm the exact year, drivetrain, and factory options match this kit before ordering. Fitment confirmation prevents returns and ensures a correct installation.

• Compatible with 2013–2018 Ram 6.7L Cummins models when verified
• Fitment card on the listing shows detailed application guidance
• Designed to meet or exceed OE filter requirements for this engine family

Who is this for: This maintenance kit is aimed at Ram 6.7L Cummins owners, independent shops, and fleet managers who want a single, tested package to complete routine filter service. It’s particularly useful for operators who prefer matched components for consistent performance and for anyone seeking to simplify parts procurement for scheduled maintenance.