Four-pack engine air filter set designed for specified Kenworth and Peterbilt truck models. Constructed from paper filtration media, these direct-replacement filters effectively capture airborne contaminants while allowing smooth airflow to the engine. Each filter corresponds to part number P621725 and fits Kenworth T680,T880 and Peterbilt 567,579 applications. Compatible engines include PACCAR MX13, PACCAR MX11, CUMMINS X15, and CUMMINS IS variants. The paper material provides dependable particle separation under normal operating conditions. Package dimensions are approximately 53 cm in length by 49 cm in width by 69 cm in height, with a gross weight of 13.55 kg. The set contains four units, supporting fleet maintenance schedules and reducing downtime between replacements. Installation is straightforward, requiring no specialized tools or modifications. For smart results, verify vehicle and engine compatibility using the fitment details before ordering. Store filters in a clean indoor location away from moisture and direct contaminants until ready for use. Regular replacement helps sustain correct air-to-fuel ratios and supports consistent engine responsiveness. Always follow vehicle manufacturer service intervals and inspection guidelines. The lightweight paper design simplifies handling during routine service.
Replace worn-out filters to maintain proper engine airflow and efficiency
Install without special tools using straightforward paper-based filter design
Protect internal engine parts from airborne dust and debris intrusion
Fit Kenworth T680, T880 and Peterbilt 567,579 with compatible engines
Include four identical P621725 direct-fit air filters in one package
