Doc's Diesel Filter Set for 6.7L Cummins RAM 2019–2024 — Matched Fuel/Water Separators & Oil Filter

Doc's Diesel Filter Set provides a matched trio of fuel water separators and an oil filter engineered to fit 2019–2024 Ram trucks with the 6.7L Cummins engine.

When servicing a 6.7L Cummins between 2019 and 2024, you want filters that fit precisely, meet or beat OE filtration targets, and are tested for real-world performance. This kit bundles components intended for the same application so one purchase covers multiple service points: two fuel/water separator units (DGF430 and DGF401) and a D5335 oil filter. Independently tested filtration efficiency numbers and clear service cadence make this set practical for DIYers and shops who need consistent, replaceable parts.

How does this filter set match my 2019–2024 6.7L Cummins?

Each item in the set is selected and tested to align with the physical and performance characteristics of Ram 6.7L Cummins models from 2019 through 2024. The housings, threads, and seal dimensions are designed to install where OE parts normally go, reducing fitment headaches.

• Engine compatibility: built for 2019–2024 Ram 6.7L Cummins models.
• Form and seal: engineered to meet OE mounting and sealing requirements.
• Matched set: fuel/water separators and oil filter chosen for the same application.

What level of filtration performance can I expect?

Independent laboratory testing provides concrete performance figures: the DGF430 separator showed 99.1% efficiency down to 3 microns, the DGF401 achieved 93.48% at 3 microns, and the D5335 oil filter demonstrated 99% efficiency. Those numbers indicate strong particulate and water-removal capability when filters are installed and changed on schedule.

• DGF430: 99.1% efficiency at 3 microns (fuel/water separation).
• DGF401: 93.48% efficiency at 3 microns (secondary separator).
• D5335 oil filter: 99% particulate removal efficiency.

How often should I replace these components?

Service intervals depend on driving conditions and your vehicle warranty guidance. As a general rule for diesel systems, fuel/water separators are commonly replaced between 5,000 and 10,000 miles, with 15,000 miles as an upper limit in less demanding service. Follow the truck manufacturer's recommended oil and filter change intervals and adjust frequency for heavy towing or off-road use.

• Fuel/water separators: typically every 5,000–10,000 miles; 15,000 miles maximum in light use.
• Oil filter: change per manufacturer oil service schedule or during each oil change.
• Adjust intervals for heavy towing, high mileage, or contaminated fuel conditions.

What comes in the box and why is that useful?

The kit ships with a DGF430 fuel water separator, a DGF401 fuel water separator, and a D5335 oil filter. Because the parts are matched for the same engine family and years, a single order supplies the primary filtration pieces required for several routine maintenance tasks, saving time hunting individual replacement parts.

• Included items: DGF430, DGF401, and D5335 filters—one order covers multiple services.
• Tested parts: each component independently evaluated for filtration efficiency.
• Fit confirmation: use the fitment card on the product page to verify exact year and configuration before purchasing.

Who this is for: This filter set is intended for owners and technicians servicing 2019–2024 Ram trucks equipped with the 6.7L Cummins engine who want a matched, tested group of filtration components. It suits DIY mechanics who prefer a single, vehicle-specific kit; fleet managers seeking consistent replacement parts; and service shops that need reliable, tested filters compatible with OE dimensions. Always confirm your truck’s year and configuration with the fitment card before ordering and follow the manufacturer’s service schedule for best results.