Description
Coralfly 21715813 is a primary engine air filter (cylindrical / radial seal type) designed for heavy-duty Volvo truck air intake systems. The filter is installed in the main air cleaner housing and functions as the primary filtration element, preventing dust, dirt, and airborne contaminants from entering the engine and turbocharger.
The filter features a round metal-reinforced cartridge design with outer protective mesh and rubber end caps, ensuring structural strength under high airflow and vibration conditions. It uses a radial seal system, which provides a tight, leak-proof fit inside the housing and prevents unfiltered air bypass.
The filtration media consists of high-efficiency cellulose, designed to provide high dust-holding capacity and filtration efficiency up to 99.9% (ISO 5011 standard) while maintaining stable airflow required for proper combustion and engine performance.
This filter is commonly used on Volvo trucks including VNL, VNM, VN, and FH series, typically with Volvo D11, D13, D16 engines and some Cummins ISX applications, depending on the air intake system configuration.
The filter is designed to protect the turbocharger and engine internals from abrasive particles, maintain consistent airflow for efficient combustion, and support fuel economy and engine longevity; typical service interval is 25,000–50,000 miles or based on air restriction indicator, with more frequent replacement required in dusty or severe operating conditions.











Caleb –
The packaging was outstanding. The filter arrived in flawless condition.