The Donaldson primary air filter is a high-performing solution for heavy-duty diesel engine applications. Its high-efficiency cellulose media, known for its proven track record, ensures optimal filtration. The unique sawtooth design compresses to cushion and securely hold the filter in place, even in the harshest environments. The RadialSeal design allows for swift filter changes, ensuring minimal downtime. Additionally, its durable structural support safeguards the filter from damage or collapse, making it ideal for heavy vibration applications or humid conditions. This filter meets ISO 5011 standards, attesting to its quality.