OE Quality
60-Day Returns

Four Seasons 98785 HVAC Heater Core - Rear
Overview of Four Seasons Heater Core 98785
The Four Seasons Heater Core 98785 is designed to restore efficient heating performance in select Dodge vans. Engineered with durable aluminum construction, this heater core ensures reliable heat transfer and long-lasting operation for your Dodge B150, B250, B350, and Ram 1500, 2500, 3500 Van models.
- Core dimensions: 7-3/4" length, 7-1/8" width, 1-7/8" thickness
- Constructed from corrosion-resistant aluminum
- Core depth of 1.875 inches and height of 7.750 inches
- Tube sizes: two 0.500 inch (12.7 mm) tubes and one 0.625 inch (15.875 mm) tube
- Meets or exceeds OEM specifications for fit and function
- Non-adjustable pipe positioning for direct replacement
Four Seasons Heater Core Product Line
The Four Seasons Heater Core line focuses on delivering reliable HVAC components that meet or exceed original equipment manufacturer standards. This product line emphasizes quality materials such as aluminum cores for improved heat conduction and corrosion resistance. The 98785 heater core is part of this line, providing a direct-fit solution for Dodge vans requiring efficient cabin heating.
Detailed Product Description
This HVAC heater core features an aluminum core measuring 7.75 inches in height, 7.125 inches in width, and 1.875 inches in depth, designed to fit specific Dodge B150, B250, B350, and Ram 1500, 2500, 3500 Van models. The three tubes—two at 0.5 inches and one at 0.625 inches diameter—allow for proper coolant flow and heat exchange. The heater core’s fixed pipe positioning ensures compatibility with factory HVAC systems without modification. Its aluminum construction offers resistance to corrosion and efficient heat transfer, contributing to consistent cabin heating performance.
Common Applications and Issues Resolved
- Restores heating function in Dodge B150, B250, B350 vans and Ram 1500, 2500, 3500 Vans
- Replaces leaking or clogged heater cores causing coolant loss
- Eliminates insufficient cabin heat due to core blockages or corrosion
- Addresses heater core failures that cause fogging or coolant odors inside the vehicle
- Solves overheating issues related to compromised heater core performance
Installation Notes and Tips
Installation of the Four Seasons Heater Core 98785 requires draining the vehicle’s cooling system and removal of the dashboard or HVAC housing to access the core. Since pipe positioning is fixed, ensure proper alignment with existing HVAC connections. Verify all hose connections are secure and free of leaks after installation. It is recommended to flush the cooling system to remove debris before installing the new heater core to prevent premature clogging.
Quality Assurance and Warranty
The Four Seasons Heater Core 98785 meets or exceeds OEM standards for fit, form, and function, ensuring reliable performance in compatible Dodge vans. Manufactured with corrosion-resistant aluminum, this heater core is built for durability. Warranty coverage details should be confirmed with the product documentation or supplier.
| Brand | Four Seasons |
| Part Number | 98785 |
| Position | Heater Core, Rear |
| Length | 7-3/4 |
| Thickness | 1-7/8 |
| Width | 7-1/8 |
| Core Material | Aluminum |
| Adjustable Pipe Positioning | No |
| Core Depth IN | 1.875 |
| Core Height IN | 7.750 |
| Core Width IN | 7.125 |
| Description | Heater cores |
| Meets / Exceeds OEM? | Yes |
| Style | Aluminum heater core |
| Tube 1 IN | 0.500 |
| Tube 1 MM | 12.700 |
| Tube 2 IN | 0.500 |
| Tube 2 MM | 12.700 |
| Tube 3 IN | 0.625 |
| Tube 3 MM | 15.875 |
| Type | Heater core /aluminum |
This part fits 46 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1997 | Dodge | B1500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1997 | Dodge | B2500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1997 | Dodge | B3500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1997 | Dodge | Ram 1500 Van | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1997 | Dodge | Ram 2500 Van | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1997 | Dodge | Ram 3500 Van | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1996 | Dodge | B1500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1996 | Dodge | B2500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1996 | Dodge | B3500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1996 | Dodge | Ram 1500 Van | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1996 | Dodge | Ram 2500 Van | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1996 | Dodge | Ram 3500 Van | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1995 | Dodge | B1500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1995 | Dodge | B2500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1995 | Dodge | B3500 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1995 | Dodge | Ram 1500 Van | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1994 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1994 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1994 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1993 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1993 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1993 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1992 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1992 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1992 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1991 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1991 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1991 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1990 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1990 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1990 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1989 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1989 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1989 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1988 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1988 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1988 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1987 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1987 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1987 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1986 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Dodge | B150 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Dodge | B250 | Rear | Compatible with vehicles equipped with air conditioning.; Heater Core |
| 1985 | Dodge | B350 | Rear | Compatible with vehicles equipped with air conditioning.; 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.