CAT 1R-1807 Engine Oil Filter — Genuine 1R1807 Single Unit, 1.125-16 UNF Thread & 262mm Height

Genuine CAT 1R-1807 engine oil filter engineered to fit compatible Caterpillar diesel engines and provide precise filtration in a single-pack format.

The CAT 1R-1807 is an authentic replacement oil filter designed and manufactured to Caterpillar specifications. It’s sold here as a single unit and works where the 1R1807 designation is listed by the equipment or vehicle manufacturer. Before purchasing, verify fitment against your owner’s manual or equipment parts list to confirm compatibility.

Which engines and equipment use the CAT 1R-1807 filter?

The 1R-1807 fits a range of Caterpillar diesel engines and some off-highway equipment that call for that exact part number. Application varies by serial number and configuration, so always cross-reference the part code with your equipment’s parts manual or the dealer database.

• Genuine CAT part number: 1R-1807 / 1R1807
• Common on select Cat diesel engines and auxiliary systems
• Confirm fitment with vehicle/equipment owner’s manual or parts lookup

What are the physical specifications and connection details?

The filter’s dimensions and thread details are provided so you can confirm a proper match. These measurements are useful for checking clearance in the engine bay and ensuring the replacement threads mate correctly with the filter head.

• Thread size: 1.125 - 16 UNF
• Overall height: 262 mm
• Outer diameter: 108 mm
• Sold as a single genuine Caterpillar unit (quantity: 1)

How should I install and service the CAT 1R-1807 filter?

Installation is straightforward for experienced technicians but should follow manufacturer procedures. Drain or relieve system pressure where needed, replace the filter element, and torque the filter to the recommended specification. Always use compatible engine oil and dispose of the old filter according to local regulations.

• Follow Caterpillar or equipment service manual steps
• Lubricate gasket before mounting and hand-tighten, then torque to spec
• Replace at recommended service intervals listed by the equipment maker

Why choose an authentic CAT 1R-1807 instead of aftermarket alternatives?

Using a genuine Caterpillar filter helps ensure component compatibility and that the part meets the original engineering tolerances. Real CAT parts are produced to match the company’s design and quality checks; this helps simplify parts sourcing and equipment record-keeping.

• Manufactured to Caterpillar part specifications
• Identical part number for easier service records and ordering
• Sold as a single OEM unit, reducing fitting surprises

Who this is for: technicians, fleet managers, equipment owners, and DIY mechanics who need an exact OEM replacement oil filter for Cat machines that list part number 1R-1807. If your service schedule or parts list specifies 1R-1807 (1R1807), this single-pack genuine CAT filter is supplied to match those requirements. If you’re unsure whether this is the right filter, check your owner’s manual or consult an authorized Caterpillar dealer before installation.