Fuel filters

Replacement Fuel Filters for Heavy Equipment and Diesel Engines

Find replacement fuel filters and fuel filtration components for selected heavy equipment, diesel engines, agricultural machinery, trucks, and industrial applications at FAB Heavy Parts. This collection includes standard fuel filters, fuel filter assemblies, filter heads, primer pumps, and fuel filter water separators for specific applications from brands such as John Deere, Caterpillar, Cummins, Isuzu, Case, JCB, Doosan, and Racor/Parker.

A fuel filter helps remove dirt and other contaminants from fuel before they reach sensitive fuel-system components. Keeping the filtration system in good condition supports reliable engine operation and helps reduce the risk of contamination-related wear. For diesel equipment operating in demanding environments, a suitable replacement filter is an important part of routine maintenance.

Fuel Filters, Assemblies, and Water Separators

Different machines use different fuel filtration configurations. Some applications use a standalone filter, while others use a complete assembly or a component such as a filter head or primer pump. Fuel/water separators are designed for applications where separating water from fuel is part of the filtration system.

Examples in this collection include fuel filter assembly RE559946 for specified John Deere engine and equipment applications, fuel filter water separator 145-8862 for listed Caterpillar applications, and fuel filter head 3975404 for the Cummins QSB6.7 engine. These examples reflect individual product listings; compatibility should not be assumed across every model from the same manufacturer.

How to Choose the Right Fuel Filter

Start with the part number on your existing filter or the number specified in your equipment’s parts documentation. Compare it with the replacement listing, then confirm the engine and machine model. Also check whether you need a filter element, complete assembly, filter head, primer pump, or water separator.

Filter dimensions, connection types, sealing arrangements, and filtration requirements can vary by application. A filter that looks similar may not be suitable if its design or specifications differ. Follow the equipment manufacturer’s maintenance schedule and fuel-system service procedures when replacing the filter.