The WIX air oil separator measures 19-1/8 " by 4-1/8 " in outer diameter. Designed to reduce oil contamination, it aids in extending engine life while improving the air quality within the engine compartment. Its compact dimensions make it suitable for easy placement in tight spaces, helping to minimize oil blow-and contribute to cleaner exhaust emissions. The functionality of this separator extends the interval between necessary maintenance checks, optimizing vehicle upkeep routines.