HomeHVAC > Temperature Controls and Related ComponentsFour Seasons 74641 HVAC Heater Control Valve
Part #: 74641

Four Seasons 74641 HVAC Heater Control Valve

Heater Valve
⚙️ 5 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$38.88Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heater Valve
🚗Fitment: Toyota, Celica and Camry
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Four Seasons Heater Valve 74641 for Toyota Vehicles

The Four Seasons Heater Valve 74641 is a cable-operated, non-bypass heater valve designed specifically for Toyota Camry and Celica models. This OEM replacement part ensures proper temperature control within your vehicle's HVAC system by regulating coolant flow to the heater core.

  • Cable operated open non-bypass heater valve
  • Constructed from durable plastic material
  • Two hose connectors with 0.625 inch (15.875 mm) openings
  • Non-bypass style for direct coolant flow control
  • OEM replacement part compatible with Toyota Camry and Celica

Detailed Features and Specifications

The Four Seasons Heater Valve 74641 features a cable operation mechanism that allows precise control of the heater core coolant flow without bypassing. Its non-bypass design means all coolant passes through the valve when open, providing efficient heating performance. The valve includes two hose connectors, each with an opening diameter of 0.625 inches (15.875 mm), ensuring a secure fit with the vehicle's existing hoses. Made from high-quality plastic, this heater valve offers reliable durability and resistance to corrosion. As an OEM replacement, it meets the original equipment specifications for Toyota Camry and Celica models, ensuring proper fit and function.

About the Four Seasons Heater Valve Product Line

The Four Seasons Heater Valve product line focuses on temperature control components designed to maintain optimal HVAC system performance. This line includes cable-operated valves like the 74641, which provide precise coolant flow regulation without bypassing the heater core. These valves are engineered to meet OEM standards, offering reliable replacements for factory-installed parts in various vehicle makes and models, including Toyota.

Common Applications and Problem Resolution

  • Restores proper heater core coolant flow in Toyota Camry and Celica
  • Resolves issues with inconsistent cabin heating
  • Eliminates heater valve leaks caused by worn or damaged components
  • Prevents overheating of the HVAC system due to faulty valve operation
  • Replaces malfunctioning or stuck heater valves affecting temperature control

Installation Notes and Tips

Installation of the Four Seasons Heater Valve 74641 requires disconnecting the heater hoses and cable linkage from the old valve. Ensure the hose connectors match the 0.625 inch (15.875 mm) diameter for a proper seal. It is recommended to inspect and replace any worn hoses or clamps during installation. Proper cable adjustment is necessary to guarantee smooth valve operation and accurate temperature control. Always follow vehicle-specific service manual instructions for safe and correct installation.

Quality Assurance and Warranty

Four Seasons provides this heater valve as an OEM replacement part, manufactured to meet original equipment standards for fit, form, and function. The plastic construction is designed for durability and resistance to typical HVAC system conditions. While specific warranty details are not provided here, Four Seasons products generally come with a limited warranty against defects in material and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.

BrandFour Seasons
Part Number74641
PositionHeater Valve
Bypass?No
DescriptionCable Operated Open Non-Bypass Heater Valve
Hose Connector Quantity2 Connectors
MaterialPlastic
O.E. Replacement?Yes
Opening B IN0.625
Opening B MM15.875
Opening IN0.625
Opening MM15.875
Operation TypeCable
StyleNon-Bypass
TypeHeater Valves

This part fits 5 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1989ToyotaCelicaN/AHeater Valve
1988ToyotaCamryN/AHeater Valve
1988ToyotaCelicaN/AHeater Valve
1987ToyotaCelicaN/AHeater Valve
1986ToyotaCelica2.0LL4N/AHeater Valve

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

111746411550771191450481919322224612966013687464180050882112598427032030CWK800508H4641H77834HV9502C

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.