This radiator hose is a direct replacement for OEM part number 16573-0T020, also known as Radiator Hose No.3. It is a coolant ventilation/pipe hose that routes coolant within the engine cooling system. Manufactured from EPDM rubber for heat and pressure resistance, this hose is listed for Toyota Corolla applications across multiple markets. Note: available reference data associates this number with Corolla but does not specify exact chassis, engine code, or a precise year range from Toyota’s official catalog. Verify your original part number before ordering.
2. Product ParametersPart Type: Radiator Hose No.3 / Coolant Hose
OEM Reference: 16573-0T020
Material: EPDM Rubber
Vehicle Fitment (listed): Toyota Corolla (various markets)
Condition: New aftermarket replacement
Direct-fit replacement for straightforward installation
EPDM construction resists heat, pressure, and coolant degradation
Restores proper coolant routing when the original hose cracks or leaks
Designed as an alternative to the original hose for cooling system maintenance
Toyota Corolla – market/year range not precisely confirmed by official catalog (listed broadly as 2002-2023 in third-party data)
Note: Verify chassis code, engine variant, and original part number before ordering.
Q1: What are the symptoms of a failing radiator hose?
A: Common signs include coolant leaks beneath the front of the vehicle, visible cracks or bulges on the hose, engine overheating, and low coolant level with no other obvious cause.
Q2: Is this a genuine Toyota part?
A: This is a high-quality aftermarket replacement manufactured to OEM specifications. The OEM number 16573-0T020 is referenced for compatibility identification only.
Q3: Does this hose fit other Toyota models besides Corolla?
A: Available reference data associates 16573-0T020 primarily with Toyota Corolla. Other models may use different hose numbers. Please verify your original part number and vehicle details before ordering.