Donaldson P181031 Air Filter Element

The Donaldson P181031 is a primary round air filter element designed for heavy-duty diesel engine intake systems. It features high-efficiency cellulose media with Pleatloc pleat spacing technology to ensure uniform airflow and extended service life. Corrosion-resistant coated steel liners provide structural support under high airflow conditions. The filter utilizes an axial seal design with a flexible gasket for a tight seal against the air cleaner housing. Technical specifications include an outer diameter of 351.6 mm (13.84 in), inner diameter of 240.8 mm (9.48 in), and a length of 355.6 mm (14.00 in). Filtration efficiency is rated at 99.9 percent per ISO 5011 test standards. Flow direction is inside-out. This element serves as a direct replacement for OEM air cleaner assemblies on Cummins NT310, NT855 (Big Cam) and Detroit Diesel 6V71, 8V71, 16V71 engine platforms across truck, bus, construction machinery, and industrial compressor applications.