RAM 1500 to 5500 diesel filter kit with oil-water separator, a white replacement fuel filter assembly featuring a chemical fibre filter screen, PA66 GF30 cover plate, and nitrile rubber sealing ring for heavy-duty truck maintenance.
RAM 1500 to 5500 Diesel Filter and Oil-Water Separator Replacement Kit

This all-in-one fuel filter kit serves as a direct replacement component for the diesel fuel systems in RAM heavy-duty trucks from the 1500 through to the 5500 series. It combines the primary diesel filter with an integrated oil-water separator function, a critical element for maintaining fuel purity and protecting engine components from water contamination. Supplied as a complete, ready-to-install white assembly, it is designed to match the original equipment specifications, providing a straightforward solution for scheduled maintenance or part replacement. The kit's construction is detailed with specific material choices for each component, ensuring it meets the demands of the vehicle's fuel system.
Features and Construction

This replacement kit is engineered to replicate the form and function of the original factory part. Its design focuses on providing a sealed, effective filtration unit that interfaces correctly with the truck's fuel lines and housing. The integration of the oil-water separator is a key functional aspect, as removing water from diesel is essential for preventing injector damage and microbial growth in the fuel tank.
Material and Build
The kit's construction is defined by three primary materials, each selected for a specific role. The filtration core consists of chemical fibre filter paper, which acts as the medium to capture solid contaminants from the fuel. The main structural body, or cover plate, is moulded from PA66 GF30. This is a glass-fibre reinforced nylon polymer, chosen for its rigidity, durability under hood temperatures, and resistance to chemical exposure from diesel fuel. The sealing interface between the filter assembly and the housing is secured by a ring made from high-quality nitrile rubber (NBR), a material renowned for its excellent resistance to oils, fuels, and compression set, ensuring a leak-proof seal over the service interval.
Size and Practical Fit
As a direct replacement part, the kit is manufactured to the precise dimensional specifications required for the filter housing on applicable RAM truck models. This ensures it fits securely without modification and that the sealing ring compresses correctly to form a proper seal. The white colour of the housing is a common identifier for this type of filter assembly. Vehicle owners and technicians should verify their truck's model (1500, 2500, 3500, 4500, or 5500) to confirm compatibility before purchase, as fitment is the primary practical concern for a component of this nature.
Uses and Placement

This product has a clear and singular application: servicing the fuel system of compatible RAM diesel trucks. Its use is tied directly to vehicle maintenance schedules, either as a preventative replacement or to address a failed or clogged existing filter.
Event or Professional Use
For commercial fleets, workshops, and dealerships servicing RAM trucks, this kit represents a standard service item. Its correct application ensures vehicles remain reliable, particularly those used for towing, hauling, or high-mileage commercial operations where clean fuel is paramount. Keeping a stock of these kits allows for efficient turnaround during scheduled service periods.
Everyday Home Use
For an owner of a RAM 1500 or larger diesel truck who performs their own maintenance, this kit provides the necessary parts to complete a fuel filter change at home. It consolidates the filter element and separator into one purchased item, simplifying the parts acquisition process. Following the vehicle's service manual for the replacement procedure is essential for a successful DIY installation.
Benefits and Buying Value

The value of this product lies in its specificity and completeness as a maintenance component. It addresses a defined need with a parts-matched solution.
Reuse and Low Maintenance
As a consumable filter element, this product is not designed for reuse. Its value is in restoring the fuel system's filtration performance to a like-new state after the old filter is spent. The low-maintenance aspect comes from its design as a complete, sealed unit; once installed correctly, it requires no further adjustment until the next service interval.
Why Choose This Product
This kit is chosen for its confirmed application for RAM trucks, a critical factor for any replacement filter. The use of specified materials like PA66 GF30 and nitrile rubber indicates attention to material compatibility with diesel fuel systems. For a vehicle owner, selecting this part provides confidence that it is engineered to the required standards for their truck, helping to avoid fitment issues or potential fuel leaks that can arise from incorrect or inferior replacement parts.

