TOYOTA 16572-17140 Radiator Hose No. 2

The part number TOYOTA 16572-17140 is a genuine OEM quality radiator coolant hose (Hose, Radiator, No.2), which is a critical component of the liquid cooling system. Its function is to ensure reliable, leak-free circulation of coolant between the engine block and the radiator under closed, pressurized operating conditions. Its flexible design effectively absorbs vibrations from powertrain operation and thermal expansion movements without loosening the connection points.

Technical specifications and features:

• Part designation: Coolant Hose / Radiator Hose No.2
• Manufacturer: TOYOTA (Original Equipment Manufacturer)
• Material composition: High-grade, heat- and pressure-resistant EPDM-based synthetic rubber with internal fiber reinforcement (fabric ply) to retain cross-section geometry and prevent bursting.
• Chemical and environmental resistance: Highly resistant to glycol-based engine coolants, additives, ozone, as well as high engine bay temperatures and oil vapor.
• Failure symptoms and importance: Over time, rubber can lose its elasticity, become brittle, or crack. Typical signs of failure include hose swelling, material softening, or weeping at hose clamps, which can lead to coolant loss and severe engine overheating.

Vehicle compatibility:

• Toyota Land Cruiser 100 (J100) 4.2 D [1998 - ...] (HOSE, RADIATOR, NO.2 (HZJ105, 1HZ))