Donaldson P532509 Primary RadialSeal Air Filter Heavy-Duty Engine

The Donaldson P532509 is a Primary RadialSeal Air Filter engineered for heavy-duty engine applications including tractors, excavators, loaders, motor graders, and generator sets. Donaldson's RadialSeal design provides a reliable, leak-resistant seal that keeps the filter securely in place even under demanding vibration and harsh operating conditions.

Key Features:

• RadialSeal Technology: Reliable, leak-resistant seal keeps the filter in place under heavy vibration
• High-Efficiency Cellulose Media: Performs across a wide range of heavy-duty engine applications for extended service life
• Corrosion-Resistant Steel Liners: Coated steel inner and outer liners support media during operation and help maximize airflow
• 99.9% Filtration Efficiency: Tested to ISO 5011 standards for consistent, dependable performance
• OEM Cross-Reference: Direct replacement for Caterpillar 6I2509 and 1327167, AGCO 504421D1, Fleetguard AF25034M, and many others
• Made in the USA: Country of Origin — United States

The P532509 is a primary element filter, meaning it serves as the main filtration stage protecting the engine from airborne contaminants. Its robust construction and high-efficiency media make it well-suited for off-road equipment, agricultural machinery, and construction vehicles operating in dusty or debris-heavy environments.

Cross-Reference Part Numbers: Caterpillar 6I2509 / 1327167, AGCO 504421D1, Fleetguard AF25034M, Carquest 88742, Big A 94742, Purolator A75009, VMC AF532509