Four Seasons HVAC Heater Core P/N:98559A

Bring warm cabin air back to your classic truck with the Four Seasons heater core 98559A, an aluminum heat exchanger that drops in across the 1967-1972 Chevrolet C10 Pickup, C10 Suburban and C20/C30 trucks, the 1969-1972 Chevrolet Blazer, plus matching GMC C15/C1500 and K-series trucks, the 1970-1972 Jimmy and P-series vans. Whether you need a Blazer heater core or a replacement for a full-size C/K hauler, see the Buyer's Guide tab for the full list of 34 applications.

This hvac heater core is the small radiator-style heat exchanger inside the HVAC case: engine coolant circulates through it while the blower forces air across its fins to warm the cabin and help defog the glass.

• Aluminum core: lightweight aluminum heat exchanger.
• Heavy-duty construction: built for durability.
• O.E. fit, form and function: engineered to match the original layout.
• Independently tested: checked for quality and performance, backed by Four Seasons' decades of mobile A/C experience.

Signs the original may need replacing include weak or no cabin heat, a sweet coolant smell inside, greasy fogging on the windshield, or coolant pooling under the dash. If a failed heater core is the cause, this Four Seasons unit replaces it.