Donaldson P781399 RadialSeal Safety Air Filter 9.09 in OD x 19.06 in

The Donaldson P781399 is a RadialSeal™ Safety Air Filter engineered to serve as a critical secondary layer of engine air intake protection. Acting as a backup to the primary air filter, this safety filter guards against contaminant ingestion during primary filter servicing and in the event of primary filter damage or improper installation.

Key Features:

• RadialSeal™ Design – Provides a reliable, secure seal within the air cleaner housing
• Dual-Function Safety Filter – Acts as both a backup to the primary filter and engine protection during primary filter service intervals
• Rapid Plug Design – Engineered to plug quickly if contamination bypasses the primary filter, immediately alerting operators to a filtration issue
• 95% Filter Efficiency – Tested to ISO 5011 standards for consistent, verified performance
• Outer Diameter: 9.09 in (230.9 mm)
• Inner Diameter: 6.94 in (176.3 mm)
• Length: 19.06 in

Cross-Reference Part Numbers:

• Baldwin: RS4580
• Fleetguard: AF25897
• WIX: 42313 / 542313
• NAPA: 2313
• Hastings: AF2392
• Volvo: 11110218 / VOE11110218
• Mann & Hummel: CF23430 / CF234302
• Case IH: 426021A1
• Carquest: 87313

Donaldson recommends replacing the safety filter with every third primary filter change, or immediately following any primary filter failure. This genuine Donaldson filter ensures your engine air intake system remains protected against harmful particulates and debris.