Part Name: Heater Water Control Valve
Brand: RydSuns
Location: Front
Replace Part Number: 87240-35070, 8724035070
Product Material: Nylon, Rubber, Metal
Color: Black
Warranty: 1 Year
Fitment:
Fit For 1998 Toyota 4Runner 2.7L 3RZ-FE / 3.4L 5VZ-FE (SR5/Limited)
Fit For 1999 Toyota 4Runner 2.7L 3RZ-FE / 3.4L 5VZ-FE (SR5/Limited)
Fit For 2000 Toyota 4Runner 2.7L 3RZ-FE / 3.4L 5VZ-FE (SR5/Limited)
Fit For 2001 Toyota 4Runner 2.7L 3RZ-FE / 3.4L 5VZ-FE (SR5/Limited)
Fit For 2002 Toyota 4Runner 2.7L 3RZ-FE / 3.4L 5VZ-FE (SR5/Limited)

Include Packing: 1 x Water Valve Assembly
Advantage:
Precise Temperature Control：The heater control valve adjusts coolant flow to the heater core based on driver settings. In vehicles with automatic climate systems, it works with the onboard computer to keep cabin temperature stable.
Improved A/C Efficiency：By shutting off hot coolant flow to the heater core during A/C operation, the valve prevents unwanted heat from entering the system. This increases cooling efficiency, reduces compressor load, and contributes to lower fuel consumption and energy use.
Defrosting Performance：In cold or humid conditions, the valve quickly opens to allow full hot coolant flow into the heater core. This speeds up windshield and side window defogging, ensuring clear visibility and safer driving.
Overpressure Protection：The valve includes bypass or throttling mechanisms to redirect excess coolant back to the pump or engine block. This prevents pressure buildup in the heater core, protecting it from damage and extending the system's service life.
Compact Design：Typically integrated into the coolant inlet line, the valve features a space-efficient design. It can be replaced or serviced quickly without requiring major disassembly, simplifying maintenance.
Enhanced Driving Experience：By delivering smooth transitions between hot and cold coolant flow, the valve minimizes pipe vibration and system lag. This ensures fast HVAC response times and boosts both ride comfort and long-term vehicle reliability.