Donaldson P181106 Primary Round Air Filter

The Donaldson P181106 is a high-efficiency primary round air filter engineered for heavy-duty applications including trucks, construction equipment, generator sets, and industrial engines. This filter delivers reliable engine protection with professional-grade filtration performance.

Key Features:

• High-efficiency cellulose media provides 99.9% filtration efficiency per ISO 5011 standards
• Radial Seal™ technology ensures leak-resistant seal and keeps filter secure even under heavy vibration
• Corrosion-resistant coated steel liner supports media during operation and maximizes airflow
• Pleatloc™ feature maintains uniform pleat spacing to prevent media bunching and extend service life
• Round style design with 10.41-inch outer diameter and 5.91-inch inner diameter

Specifications:

• Outer Diameter: 10.41 inches
• Inner Diameter: 5.91 inches
• Overall Length: 12.25 inches
• Filter Length: 11.75 inches
• Media Type: Cellulose
• Efficiency: 99.9%
• Test Standard: ISO 5011

OEM Cross-References: Caterpillar 4L9852, 5L1006, 81526094, 3I0852 | Baldwin PA618S | Fleetguard AF332 | Fram CA219 | AC Delco A283C

This primary air filter is commonly used in Caterpillar equipment including 3306 generator sets and various heavy-duty engine applications. Donaldson filtration products are trusted worldwide for their durability and performance in demanding environments.