Main PN 3100299 water outlet joint works with Cummins ISX, QSX, X15 thermostat assemblies. Anti-corrosion cast alloy eliminates coolant seepage under high operating temperatures, while every thread and mounting boss follows factory blueprints for bolt-on swap. Heavy-duty build withstands long-haul truck engine bay vibration reliably, a must-have for cooling system overhauls.
