Keep your equipment operating at peak efficiency with our complete Filter Kit for Cummins 4BT3.9. Featuring genuine components from Fleetguard—a trusted leader in heavy-duty engine filtration—this all-in-one maintenance bundle includes the essential lube and fuel filters required for routine service. Performing concurrent filter replacements protects high-precision fuel injection components, eliminates harmful particulate and water contamination, and ensures reliable engine operation. Kit Includes: Fleetguard LF3345: Spin-On Lube Oil Filter Fleetguard FF5052: Spin-On Fuel Filter Fleetguard FS1280: Fuel / Water Separator Spin-On Filter Key Benefits: Comprehensive Protection: Protects engine components from harmful particulates, sludge, rust, and water in fuel. OEM Quality: Genuine Fleetguard heavy-duty filtration engineered specifically for optimal Cummins engine performance. Convenient Maintenance: Bundling all essential filters into one package saves procurement time and prevents missing critical service items. Direct Fitment: Designed specifically for seamless compatibility with Cummins 4BT / 4BT3.9 engines. Please verify that the included Fleetguard part numbers (LF3345, FF5052, and FS1280) match your engine's service requirements prior to ordering.