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Four Seasons 74001 HVAC Heater Control Valve
| Brand | Four Seasons 74001 |
|---|---|
| Bypass? | No |
| Description | Cable Operated Pull to Close Non-Bypass Heater Valve |
| Hose Connector Quantity | 2 Connectors |
| Material | Plastic |
| O.E. Replacement? | Yes |
| Opening B IN | 0.625 |
| Opening IN | 0.625 |
| Operation Type | Cable |
| Style | Non-Bypass |
| Type | Heater Valves |
| Product line | Heater Valve |
| Fits | Honda and Acura · 10 vehicles |
OE replacement. Direct-fit heater valve for straightforward installation.
Cable operated. Pull-to-close operation gives precise heater control.
Non-bypass design. Helps regulate coolant flow through the heater circuit.
Cross-references Carlson H850, Four Seasons 74001 and Global Parts Distributors LLC 8211341 for the same application. See all 11.
Four Seasons 74001 Heater Valve Overview
The Four Seasons Heater Valve 74001 is an OE replacement HVAC heater control valve built for cable-operated temperature control systems. It uses a pull-to-close, non-bypass design with two hose connectors and a 0.625 in. opening for direct coolant flow control in the heater circuit.
Compatible with 2005-2010 Honda Pilot and 2003-2006 Acura MDX heater valve applications, this Four Seasons 74001 part is built for vehicles that use a cable-actuated valve in the HVAC system.
Key Features
- Brand: Four Seasons Heater Valve
- Part number: 74001
- HVAC heater control valve for temperature regulation
- Cable operated, pull to close design
- Non-bypass style
- Plastic construction
- Two hose connectors
- 0.625 in. opening
- OE replacement fitment
Product Details
Four Seasons 74001 is a heater valve for HVAC temperature control systems that route engine coolant through the heater core. The cable-operated mechanism opens and closes coolant flow based on the dash control position, helping maintain proper cabin heat output. Its non-bypass configuration and OE replacement design make it a direct-match service part for the listed Honda Pilot and Acura MDX applications. If you are replacing a worn or leaking heater control valve, this part number 74001 is built to match the original style used in these vehicles.
This part cross-references Carlson H850 for the same application.
What It Helps Fix
- Loss of cabin heat due to a stuck heater valve
- Coolant leakage at the heater control valve
- Temperature control that does not respond to the cable input
- Heater core flow issues caused by a restricted valve
- Improper hot/cold air transition in the HVAC system
Installation Notes and Tips
Verify the vehicle uses a cable-operated, non-bypass heater valve before installation. Match the hose connector layout and 0.625 in. opening to the original part, and inspect heater hoses, clamps, and cable movement during replacement. Confirm fitment for 2005-2010 Honda Pilot and 2003-2006 Acura MDX before ordering.
Quality Assurance
Four Seasons supplies HVAC temperature control components for service replacement applications. This heater valve is an OE replacement part designed to match the original configuration used in the listed vehicles.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2010 | Honda | Pilot | N/A | Heater Valve |
| 2009 | Honda | Pilot | N/A | Heater Valve |
| 2008 | Honda | Pilot | N/A | Heater Valve |
| 2007 | Honda | Pilot | N/A | Heater Valve |
| 2006 | Acura | MDX | N/A | Heater Valve |
| 2006 | Honda | Pilot | N/A | Heater Valve |
| 2005 | Acura | MDX | N/A | Heater Valve |
| 2005 | Honda | Pilot | N/A | Heater Valve |
| 2004 | Acura | MDX | N/A | Heater Valve |
| 2003 | Acura | MDX | N/A | Heater Valve |
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