Reliable fuel system protection is at the core of the Donaldson P505982, engineered to efficiently separate free water and trap 99% of 5–10-micron contaminants—dust, sediment, rust, and debris—from diesel fuel. Compatible with commercial vehicles, construction machinery, industrial engines, heavy-duty trucks, and generators, it safeguards injectors, fuel pumps, and combustion systems from corrosion and premature wear.

Featuring high-capacity, anti-clog filter media with exceptional dirt-holding capability, it boasts a leak-tight seal to prevent unfiltered fuel bypass and rugged construction that withstands extreme temperatures, vibrations, and harsh operating conditions. Backed by Donaldson’s decades of filtration expertise, the Donaldson P505982 ensures consistent clean fuel flow, boosts combustion efficiency, extends component lifespan, and reduces unplanned downtime and maintenance costs for reliable long-term performance.