Description
Coralfly Air Filter 03-42776-010 is a primary engine air filter designed for heavy-duty Freightliner trucks, especially Cascadia (2018+). It ensures clean airflow into the engine, which is critical for combustion, fuel efficiency, and engine life.
Performance & Benefits
✔️ Protects turbo & engine internals from contamination
✔️ Maintains proper airflow → better fuel efficiency
✔️ Extends engine life
Replacement Tips
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Replace every 30,000–50,000 miles (depends on conditions)
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Check more often if: dusty roads, construction / off-road work
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Always inspect the secondary (safety) air filter inside the housing
Justin –
Everything arrived on schedule. The packaging was sturdy and professional.