OE Quality
60-Day Returns

Four Seasons 90741 HVAC Heater Core
Reliable Heater Core Replacement for Ford Escort and Mercury Tracer
The Four Seasons Heater Core 90741 is designed to restore efficient heating performance in your Ford Escort or Mercury Tracer. Engineered with durable aluminum construction, this heater core meets or exceeds OEM standards to ensure reliable operation and long service life.
- Core dimensions: 5-5/8 inches length, 6-1/2 inches width, 1-7/8 inches thickness
- Constructed from corrosion-resistant aluminum material
- Core depth of 1.875 inches and height of 5.625 inches for precise fitment
- Tube diameter: 0.625 inches (15.875 mm) for both inlet and outlet tubes
- Designed specifically for Ford Escort and Mercury Tracer models
- Part number 90741 ensures exact replacement compatibility
About the Four Seasons Heater Core Product Line
The Four Seasons Heater Core line focuses on delivering dependable HVAC components that meet or exceed original equipment manufacturer specifications. This aluminum heater core provides efficient heat transfer and corrosion resistance, making it suitable for maintaining optimal cabin heating in compatible vehicles. The 90741 model is part of this line, engineered to match the precise dimensions and performance requirements of select Ford and Mercury vehicles.
Product Details and Specifications
This HVAC heater core features an aluminum core measuring 5-5/8 inches in length, 6-1/2 inches in width, and 1-7/8 inches in thickness. The core depth is 1.875 inches with a height of 5.625 inches, ensuring a proper fit within the HVAC system of your Ford Escort or Mercury Tracer. Both inlet and outlet tubes have a diameter of 0.625 inches (15.875 mm), facilitating efficient coolant flow. The heater core does not include adjustable pipe positioning, maintaining OEM-style installation and performance.
Common Applications and Issues Addressed
- Restores heating functionality in Ford Escort and Mercury Tracer vehicles
- Resolves coolant leaks within the heater core assembly
- Eliminates reduced cabin heat output due to clogged or damaged cores
- Prevents overheating caused by inefficient heat exchange
- Addresses HVAC system corrosion and deterioration over time
Installation Notes and Tips
When replacing the heater core 90741, ensure the cooling system is properly drained before removal. Verify the core dimensions match your vehicle’s specifications to avoid fitment issues. Since this heater core does not feature adjustable pipe positioning, align the inlet and outlet tubes carefully during installation. It is recommended to inspect and replace any worn hoses or seals to prevent future leaks.
Quality Assurance and Warranty
The Four Seasons Heater Core 90741 is manufactured to meet or exceed OEM quality standards, providing reliable performance and durability. This part is backed by Four Seasons’ quality assurance protocols, ensuring it is free from defects in materials and workmanship. Please refer to Four Seasons’ official warranty terms for specific coverage details.
| Brand | Four Seasons |
| Part Number | 90741 |
| Position | Heater Core |
| Length | 5-5/8 |
| Thickness | 1-7/8 |
| Width | 6-1/2 |
| Core Material | Aluminum |
| Adjustable Pipe Positioning | No |
| Core Depth IN | 1.875 |
| Core Height IN | 5.625 |
| Core Width IN | 6.500 |
| 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 21 vehicles. Search below:
| Year | Make | Model | # Doors | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2002 | Ford | Escort | 4 Door | 2.0L | L4 | N/A | Heater Core |
| 2001 | Ford | Escort | 4 Door | 2.0L | L4 | N/A | Heater Core |
| 2000 | Ford | Escort | 4 Door | 2.0L | L4 | N/A | Heater Core |
| 1999 | Ford | Escort | 4 Door | 2.0L | L4 | N/A | Heater Core |
| 1999 | Mercury | Tracer | N/A | Heater Core | |||
| 1998 | Ford | Escort | 4 Door | 2.0L | L4 | N/A | Heater Core |
| 1998 | Mercury | Tracer | N/A | Heater Core | |||
| 1997 | Ford | Escort | N/A | Heater Core | |||
| 1997 | Mercury | Tracer | N/A | Heater Core | |||
| 1996 | Ford | Escort | N/A | Heater Core | |||
| 1996 | Mercury | Tracer | N/A | Heater Core | |||
| 1995 | Ford | Escort | N/A | Heater Core | |||
| 1995 | Mercury | Tracer | N/A | Heater Core | |||
| 1994 | Ford | Escort | N/A | Heater Core | |||
| 1994 | Mercury | Tracer | N/A | Heater Core | |||
| 1993 | Ford | Escort | N/A | Heater Core | |||
| 1993 | Mercury | Tracer | N/A | Heater Core | |||
| 1992 | Ford | Escort | N/A | Heater Core | |||
| 1992 | Mercury | Tracer | N/A | Heater Core | |||
| 1991 | Ford | Escort | N/A | Heater Core | |||
| 1991 | Mercury | Tracer | 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.