16670-21010 Heater Coolant Control Valve for 2004-2009 Toyota Prius 1.5L L4

Product Overview

This aftermarket replacement heater coolant control valve is intended for 2004-2009 Toyota Prius applications with the 1.5L L4 engine and cross-references part number 16670-21010. A heater coolant control valve regulates the flow of engine coolant through the heater core so the cabin heating system can adjust temperature. It is supplied for comparison with the listed reference number and is not associated with the vehicle manufacturer.

Key Features & Performance

• Regulates coolant flow into the heater core to support cabin temperature control
• Fits into the engine cooling and heating circuit for the listed Prius 1.5L L4 applications
• Cross-references part number 16670-21010 for comparison with the existing component
• Used when servicing or replacing a worn or faulty heater coolant control valve

Fitment & Compatibility

• for 2004-2009 Toyota Prius 1.5L L4 applications

Common Uses

• Replacing a worn, leaking, or malfunctioning heater coolant control valve
• Routine service of the engine cooling and cabin heating system
• Restoring normal coolant flow control through the heater circuit after component failure

Technical Specifications

• Product Type: Heater Coolant Control Valve
• Part Number: 16670-21010
• Vehicle Application(s): 2004-2009 Toyota Prius 1.5L L4

Frequently Asked Questions

Q: What does a heater coolant control valve do? A: It controls the flow of engine coolant through the heater core, allowing the cabin heating system to regulate temperature.

Q: How should fitment be verified? A: Compare the complete existing part number and the complete vehicle model designation against the part number 16670-21010 and the 2004-2009 Toyota Prius 1.5L L4 application before purchase.

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.