The CAT 1R-1804 is a standard-efficiency fuel water separator designed for Caterpillar diesel engines and heavy equipment. It removes 100% of free water and about 90% of emulsified water, along with fine contaminants, protecting fuel injectors and extending the life of the fuel system. Engineered as a genuine OEM Caterpillar part, it ensures reliable performance, durability, and compatibility with a wide range of CAT machinery, including excavators, loaders, compactors, generators, and industrial engines.
Key Features:
- Dual-action fuel filtration and water separation
- Protects critical fuel system components and injectors
- Standard efficiency for routine heavy equipment use
- Durable construction and replaceable filter element
- Compatible with various CAT engines, including C4.4 and 3054 series
Application: Essential for maintaining optimal engine performance and fuel system longevity in CAT diesel-powered equipment.





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