OE Quality
60-Day Returns

One Stop Solutions 98789 HVAC Heater Core
Overview of One Stop Solutions HVAC Heater Core 98789
The One Stop Solutions HVAC Heater Core part number 98789 is designed for reliable heating performance in Geo and Toyota vehicles. Specifically compatible with Geo Prizm and Toyota Corolla models, this heater core offers a direct replacement that maintains the original fit and function.
- Features drop-in fit, form, and function for easy installation
- Addresses original design failures to enhance durability
- Tested for cycle, vibration, burst, and environmental conditions
- Constructed with premium grade materials for extended product life
- Improves the longevity of high mileage vehicles
Detailed Product Description
This HVAC heater core from One Stop Solutions is engineered to provide a seamless replacement for the Geo Prizm and Toyota Corolla heating systems. The part number 98789 is manufactured to meet or exceed OEM specifications, ensuring a drop-in fit that requires no modifications. It is designed to overcome common design weaknesses found in original heater cores, improving overall reliability and lifespan. The product undergoes rigorous testing including cycle, vibration, burst, and environmental stress tests to ensure consistent performance under various operating conditions. Using premium grade materials, this heater core supports the heating system's efficiency and durability, making it a practical choice for vehicles with higher mileage.
Common Applications and Problem Resolution
- Replacement for leaking or clogged heater cores in Geo Prizm and Toyota Corolla
- Solves issues related to insufficient cabin heat output
- Addresses premature heater core failure due to original design flaws
- Prevents coolant leaks that can cause engine overheating
- Improves HVAC system reliability in aging vehicles
Installation Notes and Tips
Installation of the One Stop Solutions heater core 98789 should be performed by a qualified technician familiar with Geo Prizm and Toyota Corolla HVAC systems. Ensure the cooling system is properly drained before removal. Verify all hose connections and clamps are secure to prevent leaks. It is recommended to flush the cooling system to remove debris before installing the new heater core. Follow vehicle-specific service manual instructions for best results.
Quality Assurance and Warranty
One Stop Solutions provides this HVAC heater core with quality assurance backed by comprehensive testing protocols. The use of premium materials and adherence to strict manufacturing standards support product longevity. Warranty details should be confirmed at the point of purchase, but the product is designed to meet industry standards for replacement HVAC components.
This part fits 20 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1997 | Geo | Prizm | 1.8L | L4 | N/A | |
| 1997 | Geo | Prizm | 1.6L | L4 | N/A | |
| 1997 | Toyota | Corolla | 1.6L | L4 | N/A | w/o Cold Region Package |
| 1997 | Toyota | Corolla | 1.8L | L4 | N/A | w/o Cold Region Package |
| 1996 | Geo | Prizm | 1.8L | L4 | N/A | |
| 1996 | Geo | Prizm | 1.6L | L4 | N/A | |
| 1996 | Toyota | Corolla | 1.6L | L4 | N/A | w/o Cold Region Package |
| 1996 | Toyota | Corolla | 1.8L | L4 | N/A | w/o Cold Region Package |
| 1995 | Geo | Prizm | 1.8L | L4 | N/A | |
| 1995 | Geo | Prizm | 1.6L | L4 | N/A | |
| 1995 | Toyota | Corolla | 1.6L | L4 | N/A | w/o Cold Region Package |
| 1995 | Toyota | Corolla | 1.8L | L4 | N/A | w/o Cold Region Package |
| 1994 | Geo | Prizm | 1.8L | L4 | N/A | |
| 1994 | Geo | Prizm | 1.6L | L4 | N/A | |
| 1994 | Toyota | Corolla | 1.6L | L4 | N/A | w/o Cold Region Package |
| 1994 | Toyota | Corolla | 1.8L | L4 | N/A | w/o Cold Region Package |
| 1993 | Geo | Prizm | 1.8L | L4 | N/A | |
| 1993 | Geo | Prizm | 1.6L | L4 | N/A | |
| 1993 | Toyota | Corolla | 1.6L | L4 | N/A | w/o Cold Region Package |
| 1993 | Toyota | Corolla | 1.8L | L4 | N/A | w/o Cold Region Package |
* 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.