CAT Engine Oil Filter 1R1807 (1R-1807) Single Unit — High-Efficiency Media, 262mm Height

Genuine CAT 1R1807 engine oil filter engineered to protect your diesel engine by capturing contaminants while maintaining oil flow.

The CAT 1R1807 (also listed as 1R-1807) is an authentic Caterpillar engine oil filter built for heavy-duty diesel applications. Designed to match OEM fit and performance, this single-count filter uses high-efficiency media and a robust housing to help extend engine life when installed and replaced according to the machine manufacturer’s schedule. Always verify compatibility with your equipment’s manual or parts fiche before ordering.

What machines does the CAT 1R1807 fit?

The 1R1807 is a common service part across many Caterpillar engines and industrial applications. Fitment depends on model year and engine variant, so cross-reference your parts list or VIN. This filter is typically used in medium- and heavy-duty diesel engines where the specified thread and dimensions match the service requirements.

• Thread size: 1.125-16 UNF — ensures proper mounting to compatible housings.
• Height: 262 mm — matches the clearance and sealing surfaces on approved engines.
• Diameter: 108 mm — fits designated filter mounts without modification.
• Quantity: sold as a single unit for one service interval.

How does this filter balance filtration and oil flow?

Caterpillar designs its filters to trap contaminants while preserving adequate oil circulation for lubrication and cooling. The 1R1807 uses engineered media that captures particles down to the rated sizes and a durable canister that resists collapse under pressure. Proper installation and timely replacement help maintain the intended flow characteristics.

• High-efficiency filter media captures particulate without overly restricting flow.
• Sturdy metal housing resists deformation from system pressure and heat.
• Sealing gasket and correct thread match minimize leaks and bypass risk.

What specifications and installation notes should I know?

The filter’s physical and thread specifications are critical for a reliable seal and fit. Use the machine manual to confirm the 1.125-16 UNF thread and the 262 mm x 108 mm dimensions are compatible. Replace the filter during scheduled maintenance and follow recommended torque and gasket prep practices.

• Thread: 1.125-16 UNF — ensure correct mount thread engagement.
• Height 262 mm and diameter 108 mm — confirm clearance in filter housing area.
• Sold quantity: single filter — keep spare on hand for next service.

Why choose a genuine CAT filter over aftermarket alternatives?

Original Caterpillar filters are manufactured to the brand’s design and performance standards, which helps ensure compatibility and predictable filtration performance. Using an OEM filter reduces the risk of fitment issues and maintains parts traceability when servicing CAT equipment.

• OEM engineering and materials specified to Caterpillar standards.
• Reduced likelihood of improper fit or premature failure compared with unknown aftermarket parts.
• Easy cross-reference with CAT parts catalogs and dealer support if needed.

Who is this for: The CAT 1R1807 oil filter is intended for owners, fleet managers, and maintenance technicians who operate Caterpillar diesel engines and need an OEM replacement filter. It’s suitable for heavy equipment, industrial engines, and any application where the 1R1807 specification is listed. Verify your equipment’s service manual or parts diagram to confirm this filter matches your model before purchase.