Keep warm air flowing to the cab with the Four Seasons heater core (P/N 98619), the aluminum core that transfers heat from the engine coolant to the air your blower pushes into the interior. It drops in as a direct-fit replacement across a wide run of classic Dodge trucks — 1981-1993 Dodge W150, W250, W350, D150, D250, D350 and Ramcharger, plus the 1984-1989 D100 and W100, and the 1981 D400 and D450. See the Buyer's Guide tab for the full list and to confirm your exact year and model.
This hvac heater core is built from aluminum and follows Four Seasons' heavy-duty approach, with over 50 years of mobile A/C experience behind it.
- Heavy-duty construction: made for durability in demanding use.
- Engineered for O.E. fit, form and function: designed to match the original in the factory location.
- Independently tested: verified for quality and performance.
If a leaking or clogged core is the cause of weak heat, fogged glass or a sweet coolant smell in your cab, this replaces it. Draining and refilling the cooling system is required during installation — follow the vehicle service information for hoses, clamps and seals.
Frequently Asked Questions
What does the Four Seasons hvac heater core do?
It's a small aluminum coolant-to-air exchanger. Hot engine coolant flows through its tubes while the blower pushes cabin air across the fins, warming the interior and helping clear fog from the glass.
What is this heater core made of?
Aluminum, per the Four Seasons specification.
Will this heater core fit my Dodge truck?
It's a direct-fit replacement for many 1981-1993 Dodge D150, D250, D350, W150, W250, W350 and Ramcharger models, plus the 1984-1989 D100 and W100 and the 1981 D400 and D450. Check the Buyer's Guide for your exact vehicle.
What are signs my heater core may need replacing?
Weak or no heat at the vents, a sweet coolant odor in the cab, interior windshield fogging, damp carpet, or unexplained coolant loss can indicate the core is leaking or clogged. Diagnose the cause before replacing.
What's involved in installing it?
The cooling system must be drained and refilled during replacement. Follow the vehicle service information for the correct hoses, clamps and seals; this listing includes the heater core only.
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