Four Seasons 73491 HVAC Blend Door

HVAC Blend Door Kit for Jeep Grand Cherokee

Restore proper cabin temperature control with the Four Seasons HVAC Blend Door Kit, part number 73491. This blend door assembly is built for 1999-2004 Jeep Grand Cherokee models with ATC (Automatic Temperature Control) and is sized for direct HVAC housing service.

Four Seasons HVAC Blend Door Kit products are part of the brand’s temperature-control line, focused on replacement components for heating and air conditioning systems. For Jeep Grand Cherokee owners dealing with inconsistent air distribution or temperature mixing, this kit provides a service-ready blend door assembly for the specified application.

Key Features

• Blend door assembly for HVAC temperature control service
• Plastic construction for use inside the HVAC housing
• Dimensions: 10 in. length, 9.5 in. width, 3.75 in. height
• Direct application for 1999-2004 Jeep Grand Cherokee with ATC
• Four Seasons part number 73491 for catalog and service reference

Detailed Description

The Four Seasons 73491 HVAC Blend Door Kit is a replacement door assembly used to regulate how heated and cooled air is mixed inside the HVAC system. In 1999-2004 Jeep Grand Cherokee models equipped with Automatic Temperature Control, the blend door plays a central role in maintaining the selected cabin temperature. This part is built from plastic and matches the listed dimensions for the application.

Use this Four Seasons blend door when servicing a Jeep Grand Cherokee HVAC system that needs a replacement door assembly for temperature blending. The part number 73491 is also a useful reference when cross-checking service catalogs and interchange listings.

This part cross-references Global Parts Distributors LLC 1711929 for the same application.

Common Problems This Part Can Address

• Uneven cabin temperature from side to side or at different vent settings
• Loss of hot or cold air mixing control in the HVAC system
• HVAC door damage inside the heater and air conditioning housing
• Temperature control issues in Jeep Grand Cherokee ATC systems
• Need for a replacement blend door assembly during HVAC repair

Installation Notes and Tips

Verify the vehicle is a 1999-2004 Jeep Grand Cherokee with ATC before ordering. Confirm the HVAC housing configuration and compare the existing door assembly to the listed dimensions and function. Because this component is installed inside the HVAC system, access typically requires disassembly of surrounding dash or heater box components according to the vehicle service procedure.

Quality Assurance

Four Seasons states that its mobile A/C and HVAC products are engineered and tested for long service life, backed by more than 50 years of mobile air conditioning experience. Part number 73491 is built for the specified Jeep Grand Cherokee application and supported by the brand’s temperature-control product expertise.