The American Mobile Power 40 Micron Bayonet Style Filler Breather Cap is designed to provide quick and secure installation and removal, while preventing the entry of contaminants such as dust, dirt and moisture. This breather cap ensures consistent and reliable airflow to the fuel tank, helping to maintain optimal performance and fuel efficiency. This breather cap is constructed from durable materials and is designed to withstand harsh conditions and temperatures. It is the perfect choice for any vehicle or equipment that requires reliable and consistent airflow to the fuel tank. FleetPride is your First Click in Heavy Duty®.