Fuel Filter 1R-1804 for Caterpillar Excavators & Backhoe Loaders

Description

This 1R-1804 fuel filter is a standard-efficiency spin-on fuel/water separator engineered as a direct replacement for the Caterpillar 1R-1804, the small-frame fuel filter used across CAT’s C4.4-powered excavators and backhoe loaders. It’s designed to remove water and fine contaminants from diesel fuel before it reaches the engine’s fuel injection system.

Product Overview

The 1R-1804 fuel filter uses cellulose filter media designed to separate water from diesel fuel while capturing fine particulate contamination, protecting fuel injectors and downstream fuel system components. It’s a standard-efficiency, small-frame filter — it is not interchangeable with the larger CAT 1R-0750 / 175-2949 advanced-efficiency filter family used on heavier on-highway C-series engines, so it’s important to confirm your specific engine and equipment model before ordering. Each unit is dimensionally verified against OEM measurements and tested for filtration performance before shipment.

Fits the Following Caterpillar Models & Engines

Always confirm your machine’s serial number range against the OEM cross-reference before ordering, as fuel system filtration specifications can vary across production years within the same model.

OEM Cross-Reference Numbers

Key Features

• Standard-efficiency water separation, removing free water and fine contaminants from diesel fuel
• Small-frame spin-on design, purpose-built for C4.4-powered excavators and backhoe loaders (not interchangeable with larger CAT fuel filter families)
• Dimensionally verified against OEM specifications, not just cross-reference number matching
• Consistent batch quality control, with raw material and pre-shipment testing on every production run
• Broad application coverage, spanning CAT’s D2-series excavators and F2-series backhoe loaders

Specifications (Publicly Referenced Dimensions)

Dimensions below are compiled from publicly available cross-reference filter databases and are provided as a reference guide. Please verify against your machine’s actual filter housing or OEM documentation before bulk ordering — production-year variations within the same model can affect exact fitment.

Why Source This Fuel Filter from IXIN Filter

We manufacture this 1R-1804 fuel filter in our own production facility, with quality control checkpoints from raw material inspection through final pre-shipment testing. If you’re sourcing for a distribution business or fleet, we can provide:

• Sample units for independent testing before a bulk order
• Documentation on OEM cross-reference verification
• Flexible MOQ and private-label packaging options
• Consistent batch-to-batch quality for repeat orders

Frequently Asked Questions

Is the 1R-1804 the same size as the CAT 1R-0750 or other larger CAT fuel filters? No. The 1R-1804 is a smaller-frame, standard-efficiency filter designed specifically for C4.4/3054-powered equipment. It is not interchangeable with the larger 1R-0750 or 175-2949 advanced-efficiency filter families used on heavier on-highway engines.

Does this filter separate water from fuel? Yes. The 1R-1804 functions as a fuel/water separator, removing free water and fine contaminants before fuel reaches the injection system.

Will this fit all the backhoe loader models listed? It fits the F2-series backhoe loaders and D2-series excavators listed above, but fuel system configurations can vary by production year and serial number range. We recommend confirming your machine’s specific configuration before ordering, especially for bulk purchases.

Do you offer samples before a bulk order? Yes. We recommend requesting a sample for independent testing before committing to a bulk order, especially for first-time buyers.

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Ready to order or request a sample? Contact IXIN Filter for pricing, MOQ, and lead time on the 1R-1804 fuel filter.