Diesly 6.7L Cummins Fuel Filter & Water Separator Kit — 2013–2018 RAM 2500–5500, 3-micron

Diesly's two-piece 6.7L Cummins kit delivers an engine-mounted fuel filter plus a frame-mounted water separator designed to protect 2013–2018 RAM/Dodge 2500–5500 trucks from contaminants and water in diesel fuel.

Whether you service your own pickup or manage a fleet, keeping diesel clean and dry is essential for reliable performance. This pair includes the engine-mounted filter for the 6.7L Cummins platform and the frame-mounted water separator that fits RAM/Dodge 2500, 3500, 4500, and 5500 models made between 2013 and 2018. Each element is built to meet OEM-style specifications, providing 3-micron filtration and compatibility with common original-equipment part numbers so replacement is straightforward.

Which vehicles and model years does this kit cover?

This kit is built to cover the 6.7L Cummins engine and the frame-mounted water separator used on RAM/Dodge heavy-duty pickups. The engine filter fits 6.7L Cummins engines from 2010 onward, while the included water separator specifically matches 2013–2018 RAM/Dodge 2500, 3500, 4500, and 5500 trucks. Use the listed interchange numbers to confirm fit for your VIN or parts manual.

• Engine-mounted filter: fits 6.7L Cummins engines (2010+).
• Frame-mounted separator: compatible with RAM/Dodge 2013–2018 2500–5500 models.
• Cross-references provided for Mopar, Fleetguard, Baldwin, Wix, Luber-Finer and others.
• Check vehicle paperwork or VIN-specific parts lookup for exact match.

How does this kit protect my fuel system during routine service?

The two-filter approach removes particulate and separates water before fuel reaches high-pressure injection components. The engine-mounted filter captures fine solids at 3 microns, while the frame-mounted unit sheds free water to prevent corrosion and injector damage. Regular replacement helps maintain fuel pressure and injection timing consistency.

• 3-micron media filters fine contaminants effectively.
• Water separator reduces moisture that harms injectors and pumps.
• Recommended replacement every 15,000 miles or 12 months.
• Supports clean fuel delivery and system longevity when changed on schedule.

Is this a direct replacement for factory and major-brand filters?

Yes — the Diesly kit is designed to interchange with many OEM and aftermarket part numbers. Cross-reference the supplied interchange list with your vehicle’s parts reference to confirm compatibility. Using a compatible filter avoids fitment issues and simplifies service procedures.

• Interchanges with Mopar, Fleetguard, Baldwin, Wix, Luber-Finer and more.
• Includes part numbers like Mopar 68065608AA and Fleetguard FS43255 for verification.
• Fits original mounting points and seals when installed correctly.
• Ideal for technicians and DIYers who need reliable, drop-in replacements.

What maintenance schedule should I follow after installation?

Follow the vehicle manufacturer’s recommendations and use the filter replacement interval as a guideline. Diesly recommends changing the filter assembly every 15,000 miles or at least once per year, whichever comes first, to maintain filtration efficiency and water separation performance. Also inspect for leaks and proper priming after each service.

• Replace every 15,000 miles or 12 months as a general rule.
• Visually check separator for water accumulation and drain as needed.
• Inspect seals and mounting hardware during every service interval.
• Prime the fuel system per manufacturer instructions after installation.

Who is this for: Diesel truck owners, fleet managers, and mechanics who operate or service 6.7L Cummins-powered RAM/Dodge 2500–5500 trucks and want an OEM-style, two-piece replacement that handles both particulate filtration and water separation. If you need a compatible, direct-replacement option backed by common interchange references and engineered to 3-micron filtering standards, this Diesly kit is tailored for regular maintenance and dependable fuel-system protection.