P550440 Donaldson Fuel Filter

The P550440 Donaldson fuel filter delivers consistent, reliable fuel purification for mid-range diesel engines in construction, agricultural, and utility equipment. It effectively removes sediment, rust, water, and harmful particles from diesel fuel, protects fuel injectors and pumps from premature wear, and ensures smooth engine operation across diverse operating conditions.

Manufactured to Donaldson’s exacting standards, this fuel filter serves as a direct replacement for a wide range of mid-range diesel engines used in tractors, loaders, small excavators, and utility vehicles. Its universal design fits most original fuel filter housings, and a flexible sealing gasket ensures a tight, leak-proof fit.

Featuring high-efficiency fuel filter media, the P550440 balances exceptional contaminant and water removal with steady fuel flow. This preserves engine power and fuel efficiency. The media resists clogging and degradation, supporting extended service intervals for daily operation.

The filter’s sturdy metal housing resists impact, vibration, and outdoor exposure. An integrated water drain enables easy water removal in humid or wet operating conditions. It withstands long-term use in construction, farming, and utility work sites.

A spin-on design enables quick, tool-free installation with no modifications required. This makes it ideal for field service and on-site equipment care. The precision sealing gasket ensures a leak-proof fit every time, eliminating the risk of fuel leakage and contamination.

We support small-batch orders for individual equipment owners and bulk procurement for agricultural operations, small construction companies, and rental fleets. All P550440 fuel filters undergo rigorous quality testing to meet Donaldson’s standards.