
Four Seasons 98780 HVAC Heater Core
Overview of Four Seasons Heater Core 98780
The Four Seasons Heater Core 98780 is designed to restore efficient heating performance in select Mitsubishi and Plymouth vehicles. Engineered with durable aluminum construction, this heater core ensures reliable heat transfer and long-lasting operation for your HVAC system.
- Core dimensions: 7-3/4 inches length, 6-3/8 inches width, 1-1/4 inches thickness
- Constructed from corrosion-resistant aluminum material
- Tube diameter: 0.625 inches (15.875 mm) for both inlet and outlet
- Meets or exceeds OEM specifications for quality and fit
- Compatible with Mitsubishi Eclipse, Galant, and Plymouth Laser models
Detailed Product Description
This Four Seasons Heater Core 98780 belongs to the Heater Core product line, which focuses on delivering reliable HVAC core components for vehicle heating systems. The aluminum heater core design provides efficient heat exchange while resisting corrosion and wear. With precise core dimensions of 7.75 inches in height, 6.375 inches in width, and 1.25 inches in depth, it fits directly into the HVAC housing of compatible Mitsubishi and Plymouth models without modification. The dual 0.625-inch tubes ensure proper coolant flow for consistent heating performance. This heater core is engineered to meet or exceed OEM standards, ensuring a proper fit and function for your Mitsubishi Eclipse, Galant, or Plymouth Laser.
Common Applications and Issues Resolved
- Restores heating capability in Mitsubishi Eclipse, Galant, and Plymouth Laser vehicles
- Replaces leaking or clogged heater cores causing coolant loss or poor cabin heat
- Eliminates unpleasant odors from a failing heater core
- Prevents fogging of interior windows due to heater core leaks
- Improves overall HVAC system efficiency and comfort
Installation Notes and Tips
When installing the Four Seasons Heater Core 98780, ensure the vehicle’s cooling system is properly drained before removal. Handle the aluminum core carefully to avoid damage to the fins and tubes. Verify that the heater core dimensions match the OEM part to ensure a correct fit. Reconnect all hoses securely and refill the cooling system with the appropriate coolant. Bleed the system to remove air pockets for optimal heating performance.
Quality Assurance and Warranty
The Four Seasons Heater Core 98780 is manufactured to meet or exceed OEM specifications, providing dependable performance and durability. This part undergoes rigorous quality control to ensure consistent fit and function. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty against defects in materials and workmanship.
| Brand | Four Seasons |
| Part Number | 98780 |
| Position | Heater Core |
| Length | 7-3/4 |
| Thickness | 1-1/4 |
| Width | 6-3/8 |
| Core Material | Aluminum |
| Adjustable Pipe Positioning | No |
| Core Depth IN | 1.250 |
| Core Height IN | 7.750 |
| Core Width IN | 6.375 |
| Description | Heater cores |
| Meets / Exceeds OEM? | Yes |
| Style | Aluminum heater core |
| Tube 1 IN | 0.625 |
| Tube 1 MM | 15.875 |
| Tube 2 IN | 0.625 |
| Tube 2 MM | 15.875 |
| Type | Heater core /aluminum |
This part fits 15 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1994 | Mitsubishi | Eclipse | N/A | Heater Core |
| 1994 | Plymouth | Laser | N/A | Heater Core |
| 1993 | Mitsubishi | Eclipse | N/A | Heater Core |
| 1993 | Mitsubishi | Galant | N/A | Heater Core |
| 1993 | Plymouth | Laser | N/A | Heater Core |
| 1992 | Mitsubishi | Eclipse | N/A | Heater Core |
| 1992 | Mitsubishi | Galant | N/A | Heater Core |
| 1992 | Plymouth | Laser | N/A | Heater Core |
| 1991 | Mitsubishi | Eclipse | N/A | Heater Core |
| 1991 | Mitsubishi | Galant | N/A | Heater Core |
| 1991 | Plymouth | Laser | N/A | Heater Core |
| 1990 | Mitsubishi | Eclipse | N/A | Heater Core |
| 1990 | Mitsubishi | Galant | N/A | Heater Core |
| 1990 | Plymouth | Laser | N/A | Heater Core |
| 1989 | Mitsubishi | Galant | N/A | Heater Core |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.