Fleetguard AF25707 primary (outer) radial-seal air filter — direct replacement for International 3562344C91 and Donaldson P606503 — for International WorkStar, DuraStar, and ProStar medium- and heavy-duty trucks. Use with the AF25732 inner safety element for full two-stage protection. Specifications Manufacturer Fleetguard (Cummins Filtration) Part Number AF25707 Part Type Primary Air Filter (Outer Element) Filter Style Radial Seal Engine Compatibility International DT466, MaxxForce DT / 7 / 9 / 10 / 11 / 13; Cummins ISX (ProStar) Overall Height 16.00 in (406.4 mm) Outer Diameter (Largest) 10.22 in (259.6 mm) Bottom Outer Diameter 10.19 in (258.8 mm) Inner Diameter (Top) 7.97 in (202.4 mm) Safety Element Fleetguard AF25732 (inner) Weight 5 lb Cross References This part replaces or is equivalent to the following part numbers: International / Navistar: 3562344C91, 3532799C1, 3532799C91 Baldwin: RS4636 Donaldson: P606503 Wix: 46870 FRAM: CA9346 Hastings: AF2357 Luber-Finer: LAF9099 NAPA: 6870 Nelson: 870726A K&N: 38-2026S Applications This primary air filter fits International trucks built around the following engine families: International DT466 (1993–2006) International MaxxForce DT (2007–2018) International MaxxForce 7 (2007–2014) International MaxxForce 9 / 10 (2007–2014) International MaxxForce 11 / 13 (2008–2017) Cummins ISX (in ProStar Class 8 spec) Representative vehicles using these engines: International WorkStar 7300, 7400, 7500 (2002–2019) International DuraStar 4100, 4200, 4300, 4400 (2002–2016) International ProStar (2014–2018) International TranStar 8500 (2004–2009) International HV507, HV607 (2019–2022) International RXT (2005–2008) This is the primary (outer) element. For full two-stage protection, also replace the inner safety element AF25732 (Baldwin RS4637) at recommended intervals. Verify your air-cleaner housing configuration before ordering.