Breather Filter Round 4 Pack

The Breather Filter Round 4 Pack by Billet Specialties is a reusable valve cover breather element designed for automotive enthusiasts and engine builders who demand reliable crankcase ventilation. Proper breather filtration prevents harmful contaminants from entering the engine's internal systems while allowing pressure equalization during operation. This four-pack set provides cost-effective coverage for multiple vehicle builds or long-term maintenance cycles, making it ideal for hot rodders, custom builders, and serious DIY mechanics.

Each Breather Filter Round element features a durable foam construction that effectively traps oil mist, moisture, and particulates while maintaining optimal airflow through the breather system. The black foam media is engineered for reusability, allowing users to clean and reinstall the filters multiple times without performance degradation, significantly reducing replacement costs over extended use. The compact 3.85-inch round design fits standard valve cover breather applications, ensuring compatibility with most street rods, muscle cars, and performance engines that utilize traditional round-style breather housings.

Engine builders and restoration professionals benefit most from this four-pack configuration, whether upgrading a single vehicle or maintaining a fleet of project cars. The reusable foam element can be cleaned with compressed air or solvent and reinstalled, making it an economical choice for those prioritizing long-term value. Installation is straightforward—simply position the round filter into your existing breather assembly and secure according to manufacturer guidelines. For optimal performance, inspect filters seasonally and clean as needed based on driving conditions and engine load.