Global Parts 8211251 HVAC Heater Control Valve
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Global Parts

Global Parts 8211251 HVAC Heater Control Valve

Brand Global Parts 8211251
Fits Ford, Mercury, Mazda, and Lincoln · 108 vehicles

Vacuum non-bypass valve. Controls coolant flow with a simple two-port design.

5/8-inch size. Matches common heater hose connections for straightforward replacement.

Heater control valve. Regulates coolant flow to help manage cabin heat.

Cross-references Four Seasons 74859, UAC HV1022 and UAC HV1022C for the same application. See all 12.

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HVAC Heater Control Valve for Ford, Mazda, Mercury

Global Parts 8211251 is a vacuum non-bypass heater valve with a 5/8 inch connection and 2 ports. It regulates coolant flow to the heater core, helping maintain consistent cabin heat in Ford Ranger, Ford Explorer, Mercury Mountaineer, and related Mazda truck applications.

Key Features

  • Vacuum non-bypass heater valve design
  • 2-port configuration for heater hose routing
  • 5/8 inch size for specified cooling system connections
  • Direct replacement style for HVAC heater control service
  • Cross-references Four Seasons 74859 for the same application
  • Part number 8211251 for ordering and fitment lookup

Detailed Description

This heater control valve is used in the engine cooling and HVAC system to manage coolant delivery to the heater core. By opening and closing coolant flow under vacuum control, it helps the heater core receive the correct flow for cabin temperature control. Global Parts 8211251 is listed for 1996-2006 Ford Explorer, 1997-2008 Ford Ranger, 1997-2006 Mercury Mountaineer, 2001-2005 Ford Explorer Sport Trac, 2001-2003 Ford Explorer Sport, 2002 Lincoln Blackwood, and select Mazda B-Series trucks including B2300, B2500, B3000, and B4000. If you are searching for a Ford Ranger heater control valve or a Ford Explorer HVAC heater valve, this part number 8211251 is a direct catalog reference to verify against your vehicle.

What It Helps Solve

  • Weak or inconsistent heat from the vents
  • Coolant flow not reaching the heater core correctly
  • Vacuum-controlled heater valve operation issues
  • Temperature control problems in the cabin HVAC system
  • Leak-related service needs at the heater hose valve connection

Installation Notes and Tips

Confirm the vehicle uses a vacuum non-bypass heater valve with 2 ports and a 5/8 inch connection before installation. Match the hose routing and vacuum control setup to the original part, and inspect adjacent heater hoses, clamps, and coolant condition during service. For fitment verification, compare the application details to your Ford Explorer, Ford Ranger, or Mazda B-Series configuration before replacing the valve.

Quality Assurance

Global Parts 8211251 is cataloged as an HVAC heater control valve with defined port count, valve type, and vehicle fitment data for application matching. This part cross-references Four Seasons 74859 for the same application.

Related reading

This part fits 108 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2008FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2008FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2007FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2007FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2006FordExplorer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2006FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2006FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2006FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2006MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2006MercuryMountaineer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2005FordExplorer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2005FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2005FordExplorer Sport Trac4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2005FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2005FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2005MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2005MercuryMountaineer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004FordExplorer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004FordExplorer Sport Trac4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004MazdaB23002.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2004MercuryMountaineer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003FordExplorer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003FordExplorer Sport4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003FordExplorer Sport Trac4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003MazdaB23002.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2003MercuryMountaineer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002FordExplorer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002FordExplorer Sport4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002FordExplorer Sport Trac4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002LincolnBlackwood5.4LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002MazdaB23002.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2002MercuryMountaineer4.6LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordExplorer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordExplorer Sport4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordExplorer Sport Trac4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordRanger2.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001MazdaB23002.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001MazdaB25002.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2001MercuryMountaineer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000FordExplorer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000FordRanger2.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000MazdaB25002.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
2000MercuryMountaineer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999FordExplorer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999FordRanger2.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999MazdaB25002.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1999MercuryMountaineer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998FordExplorer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998FordRanger2.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998MazdaB25002.5LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998MercuryMountaineer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1998MercuryMountaineer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997FordExplorer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997FordRanger2.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997FordRanger4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997FordRanger3.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997MazdaB23002.3LL4N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997MazdaB30003.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997MazdaB40004.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1997MercuryMountaineer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
1996FordExplorer4.0LV6N/AVacuum Non-Bypass Heater Valve; 2 Ports
1996FordExplorer5.0LV8N/AVacuum Non-Bypass Heater Valve; 2 Ports
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 74859UAC — HV1022UAC — HV1022C1L5Z18495AA15-50718801-027801027155071813005341ACX010442AHVH514OTH-973