Protect your engine and maintain dependable airflow with the Fleetguard AF25139M Magnum Primary Air Filter. This premium axial-seal filter is engineered to create a secure seal that helps prevent leaks and keeps harmful airborne contaminants from reaching the engine’s combustion chamber.
Designed for demanding commercial vehicle applications, the AF25139M delivers 99.9% full-life efficiency and meets the ISO 5011 efficiency test standard. Its durable construction and high-capacity design support reliable performance, longer service intervals, and extended engine life.
The AF25139M fits select Freightliner, International, Ford, Volvo, Blue Bird, and Sterling applications. It is commonly used with the Fleetguard AF25345 secondary air filter and replaces Fleetguard AF4908.
Key Features
- Premium Magnum axial-seal primary air filter
- Helps prevent air leaks and contaminant bypass
- Supports consistent airflow and reliable engine protection
- 99.9% full-life filtration efficiency
- Tested according to the ISO 5011 standard
- Designed for durable performance in demanding environments
- Overall length: approximately 15.25 inches
- Largest outside diameter: approximately 12.85 inches
- Inside diameter: approximately 6.76 inches
- Replaces Fleetguard AF4908
- Used with Fleetguard AF25345 secondary air filter
Fitment Note: Verify the equipment model, engine, and existing filter number before ordering to ensure proper compatibility.
