Four Seasons 73490 HVAC Blend Door

HVAC Blend Door Kit for Ford Econoline

Restore proper cabin temperature control with the Four Seasons HVAC Blend Door Kit, part number 73490. This door assembly is built from plastic and measures 8.12 in. high, 8.375 in. long, and 7.25 in. wide for a direct-fit replacement in supported Ford E-Series and Econoline applications.

Compatible with Ford E-350 Super Duty, E-150, E-250, Econoline Van, Econoline Wagon, and related Econoline Club Wagon models, this blend door helps maintain accurate airflow routing inside the HVAC case. Four Seasons 73490 is a practical choice when the original blend door is cracked, warped, or no longer moving correctly.

Key Features

• HVAC blend door kit with door assembly construction
• Function: blend for temperature-air mix control
• Plastic construction for OE-style replacement fitment
• Dimensions: 8.12 in. H x 8.375 in. L x 7.25 in. W
• Fits multiple Ford E-Series and Econoline applications
• Four Seasons part number 73490

Product Details

Four Seasons HVAC Blend Door Kit 73490 is engineered for Ford van HVAC systems that rely on a blend door to regulate cabin temperature. By directing air through the heater core and evaporator paths as commanded by the control system, the door assembly helps the HVAC system deliver the selected outlet temperature. This part is listed for 1997-2018 Ford E-350 Super Duty, 2002-2014 Ford E-150, 2003-2014 Ford E-250, 2010-2014 Ford Econoline Van, 2010-2014 Ford Econoline Wagon, 2007-2008 Ford E-150 Econoline, 1997-2002 Ford E-150 Econoline, 2007-2008 Ford E-350 Econoline, 1997-2000 Ford E-350 Econoline, 1999-2006 Ford Econoline, 2003-2005 Ford E-150 Club Wagon, 2002-2005 Ford E-350 Club Wagon, 1997-2002 Ford E-150 Econoline Club Wagon, 1997-2002 Ford E-250 Econoline, and 1997-2002 Ford E-350 Econoline Club Wagon applications.

This part cross-references Global Parts Distributors LLC 1711926 for the same application.

Common Problems This Part Can Address

• Inconsistent cabin temperature in Ford E-350 Super Duty and other E-Series vans
• HVAC air that stays too hot or too cold after control changes
• Broken or warped blend door movement inside the heater box
• Loss of proper air mixing between heater and A/C airflow paths
• Temperature control issues in Ford Econoline and Club Wagon HVAC systems

Installation Notes

Verify the vehicle’s HVAC case configuration and compare the original door dimensions before installation. Access to the blend door is typically through the HVAC housing, so inspect related actuators, linkages, and case components for wear while the system is open. Confirm fitment against the vehicle application and part number 73490 before assembly.

Quality Assurance

Four Seasons states that its HVAC products are engineered and tested for long service life, drawing on more than 50 years of mobile A/C experience. The brand positions this blend door kit as a repair-focused replacement for Ford E-Series and Econoline HVAC systems.