The 671855 is a magneto pressurization filter used in pressurized aircraft magneto systems. It is designed to clean and condition air entering the magneto pressurization system, helping maintain stable internal pressure and prevent contamination of ignition components.

Key features include:

OEM Continental magneto pressurization filter
In-line air filtration element for magneto pressurization systems
Removes dust, moisture, and particulate contamination from intake air
Helps maintain consistent internal magneto pressure for high-altitude operation
Protects internal ignition components from environmental degradation
Lightweight aviation-grade housing and filter media
Used in pressurized magneto systems on select Continental engine configurations
Replaceable maintenance component in ignition system servicing