Help bring cabin heat back to your 1984-1988 Pontiac Fiero with the FOUR SEASONS heater core, MPN 91499. This copper/brass core is the small heat exchanger tucked in the HVAC case that routes hot engine coolant through its tubes and fins so the blower can push warmed air into the cabin. It drops in as a direct-fit replacement for the listed applications.
- Copper/brass core: built from copper and brass for heat transfer between the coolant and the air passing across the fins.
- Heavy-duty construction: built for product durability.
- O.E. fit, form & function: engineered to match the original heater core's fit, form and function.
- Independently tested: tested by an independent party for proven quality and performance.
Signs the original may need replacing include coolant seeping onto the passenger floor, a sweet coolant smell, fogged-up windows, or little to no heat from the vents. If a leaking or clogged core is the cause, this heater core for the 1984-1988 Pontiac Fiero replaces it. Backed by Four Seasons and their decades of mobile A/C experience, this FOUR SEASONS hvac heater core routes coolant through the heater circuit to warm the cabin.
Interchange: 1560037 · 3052181 · 9010204 · GM8204 · 554499 · 6603346 · H6260 · 279158 · ZH299 · 94499 · 2468 · 709169 · 702468 · 8204 · 98499 · 398204 · 1811790 · 250299 · 90204 · HT398204
This part cross-references / interchanges with the following part numbers:
1560037, 3052181, 9010204, GM8204, 554499, 6603346, H6260, 279158, ZH299, 91499, 94499, 2468, 709169, 702468, 8204, 98499, 398204, 1811790, 250299, 90204, HT398204
Frequently Asked Questions
What vehicles does the Four Seasons 91499 heater core fit?
It is a direct-fit replacement for the 1984-1988 Pontiac Fiero. Check the "Vehicles it fits" section to confirm the fit for your specific vehicle.
What is a heater core and what does it do?
It is a small heat exchanger in the HVAC case. Hot engine coolant flows through its copper/brass tubes and fins, and the blower pushes that warmth into the cabin as heat.
What is this heater core made of?
It has a copper/brass core, which transfers heat between the engine coolant flowing through the tubes and the air moving across the fins.
What are the signs my heater core is failing?
Common signs include coolant on the passenger floor, a sweet smell, fogged windows, or weak cabin heat. Diagnose the cause first, since these can have other sources.
Is mounting hardware or coolant included?
The listing covers the heater core itself. Consult the vehicle service information for the correct installation steps and any additional parts or coolant needed.
