CAT spin-on oil filter 1R-1807 – large-capacity, advanced-efficiency (107.9 mm x 254.6 mm)

The Caterpillar 1R-1807 is a genuine Cat spin-on oil filter designed to protect engine components by maintaining oil cleanliness and supporting scheduled oil-change intervals.

Built to Cat specifications, the 1R-1807 oil filter works with Cat engines and many heavy-duty applications that require an advanced-efficiency, large-capacity spin-on element. It’s manufactured to trap contaminants, protect bearings and hydraulics, and deliver consistent flow characteristics across a full oil service interval. The dimensions, thread size and efficiency rating make it a direct fit or cross-reference for systems that accept Fleetguard LF3973 equivalents.

How does the 1R-1807 maintain oil cleanliness during long service intervals?

The 1R-1807 uses a high-efficiency filtration media and a robust canister design to capture particles and hold contaminant load without restricting flow. Its advanced-efficiency rating helps reduce wear on precision engine parts by removing fine debris that accelerates component degradation.

• Advanced-efficiency filter media for fine particle capture
• Large 107.9 mm diameter for extended contaminant capacity
• Built to hold dirt without collapsing or bypassing

Will this filter fit my engine and how do I install it?

The 1R-1807 is a spin-on filter with a 1 1/8-16-2B thread size and dimensions of 107.9 mm diameter by 254.6 mm height, making it compatible with Cat engines and systems that accept Fleetguard LF3973 cross-references. Installation is straightforward: lubricate the gasket, hand-thread until gasket contacts, then tighten per manufacturer torque or turn specification.

• Thread size: 1 1/8 - 16 - 2B for direct spin-on mounting
• Exact dimensions: 107.9 mm Ø × 254.6 mm height for fit confirmation
• Spin-on design for quick replacement during routine maintenance

What performance benefits can I expect from using the original Cat filter?

Using a genuine Caterpillar filter helps preserve the engineered balance of flow, filtration efficiency and contaminant capacity intended for Cat engines. That means more consistent oil pressure, fewer premature component failures, and predictable oil-change intervals when replacing the filter per service recommendations.

• Preserves oil pressure and flow characteristics
• Reduces risk of premature wear on bearings and hydraulic parts
• Matches Cat specifications for reliable maintenance scheduling

Are there cross-references or equivalent part numbers I should know?

The 1R-1807 is cross-referenced with Fleetguard LF3973, which simplifies sourcing if you work with mixed-brand suppliers. Always compare thread, diameter and height to ensure a proper match before substituting.

• Cross-reference: Fleetguard LF3973
• Verify dimensions and thread size when substituting parts
• Genuine Cat parts help maintain warranty and service integrity

Who is this for: The Caterpillar 1R-1807 oil filter is intended for equipment owners, fleet managers and maintenance technicians who operate Cat engines or compatible heavy-duty machinery and want a reliable, high-capacity spin-on filter. It’s ideal when you need a durable filter that meets Cat’s engineering criteria, supports extended oil intervals, and simplifies service with a straightforward spin-on replacement. Choose the 1R-1807 if your priority is maintaining oil cleanliness, protecting high-value components, and keeping downtime predictable during routine maintenance.