Four Seasons 98619 HVAC Heater Core

Heater Core for Dodge Trucks and Ramcharger

Four Seasons Heater Core 98619 is an aluminum HVAC heater core built for vehicles equipped with air conditioning. It is sized for direct replacement service in select Dodge D100, D150, D250, D350, W100, W150, W250, W350, and Ramcharger applications from 1981-1993.

With aluminum core construction and OEM-level dimensional specifications, this heater core is intended for restoring cabin heat performance in classic Dodge truck and SUV HVAC systems.

Key Features

• Four Seasons Heater Core, part number 98619
• Aluminum heater core construction
• Core dimensions: 7-3/4 in. length, 6-3/8 in. width, 1-1/4 in. thickness
• Tube size: 0.625 in. on both connections
• Meets or exceeds OEM requirements
• Compatible with air-conditioned Dodge HVAC systems
• Fits aluminum and copper/brass design applications listed below

Product Details

Four Seasons 98619 is part of the Heater Core line and is engineered as an aluminum heater core for HVAC repair and replacement. The compact core measures 7.750 inches high, 6.375 inches wide, and 1.250 inches deep, with 0.625-inch inlet and outlet tubes. This makes it a practical replacement for aging heater cores in Dodge D-series trucks and Ramcharger models where heat output, coolant flow, and cabin comfort depend on a properly functioning core. This part cross-references Dorman - HELP 90132 and TYC 96078 for the same application.

What It Helps Fix

• Weak or inconsistent cabin heat
• Coolant seepage from a deteriorated heater core
• Restricted coolant flow through a clogged core
• Fogging or dampness caused by heater core leakage
• HVAC performance loss in older Dodge truck and Ramcharger systems

Installation Notes and Tips

• Verify the vehicle uses an air conditioning-equipped HVAC setup before ordering.
• Confirm core dimensions and tube size against the removed unit before installation.
• Inspect hoses, clamps, and coolant condition during heater core replacement.
• Flush the cooling system if contamination or scale is present.
• Check for leaks and proper heater operation after installation.

Quality Assurance

Four Seasons 98619 is listed as meeting or exceeding OEM requirements. It is a direct-fit style replacement for select Dodge HVAC applications and is supported by the Four Seasons Heater Core product line.

• Fits 1985-1993 Dodge D150, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge D150, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge D250, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge D250, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge D350, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge D350, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge Ramcharger, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge Ramcharger, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge W150, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge W150, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge W250, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge W250, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge W350, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1993 Dodge W350, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1989 Dodge D100, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1989 Dodge D100, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1985-1989 Dodge W100, N/A, Aluminum Design; w/ AC; Heater Core
• Fits 1985-1989 Dodge W100, N/A, Copper/Brass Design; w/ AC; Heater Core
• Fits 1984 Dodge D100, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1981-1984 Dodge D150, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1981-1984 Dodge D250, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1981-1984 Dodge D350, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1981-1984 Dodge Ramcharger, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1984 Dodge W100, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1981-1984 Dodge W150, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1981-1984 Dodge W250, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core
• Fits 1981-1984 Dodge W350, N/A, Compatible with vehicles equipped with air conditioning.; Heater Core