HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 98575A HVAC Heater Core
Part #: 98575A

Four Seasons 98575A HVAC Heater Core

Heater Core
⚙️ 43 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heater Core
🚗Fitment: Ford and Mercury, Bronco, Cougar, F-100, F-150, F-250, F-350, and Mustang
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Reliable HVAC Heater Core for Ford and Mercury Vehicles

The Four Seasons Heater Core 98575A is designed to restore efficient heating performance in select Ford and Mercury models. Engineered with durable aluminum construction, this heater core ensures consistent heat transfer and long-lasting operation for your vehicle's HVAC system.

  • Core dimensions: 7-1/4 inches length, 6 inches width, 1-7/8 inches thickness
  • Constructed from corrosion-resistant aluminum material
  • Core depth of 1.875 inches and core height of 7.250 inches
  • Tube diameter: 0.625 inches (15.875 mm) for both inlet and outlet tubes
  • Meets or exceeds OEM specifications for reliable fit and function
  • Compatible with Ford Bronco, F-100, F-150, F-250, F-350, Mustang and Mercury Cougar models

About the Four Seasons Heater Core Product Line

The Four Seasons Heater Core line focuses on delivering replacement heater cores that meet or exceed original equipment manufacturer standards. This product line emphasizes quality materials and precise fitment to ensure proper heating system performance and durability. The 98575A model is part of this line, offering a direct replacement solution for various Ford and Mercury vehicles.

Product Details and Specifications

This HVAC heater core features an aluminum core designed for efficient heat exchange and resistance to corrosion. The core measures 7.25 inches in height, 6 inches in width, and 1.875 inches in depth, providing a compact yet effective heating element. Both inlet and outlet tubes have a diameter of 0.625 inches (15.875 mm), ensuring compatibility with the vehicle's existing HVAC plumbing. The heater core does not include adjustable pipe positioning, maintaining a fixed configuration for straightforward installation.

Common Applications and Issues Addressed

  • Restores heating performance in Ford Bronco and Mustang HVAC systems
  • Replaces leaking or clogged heater cores in Mercury Cougar models
  • Solves coolant leaks inside the passenger compartment
  • Eliminates insufficient cabin heat during cold weather
  • Prevents engine overheating caused by heater core blockages

Installation Notes and Tips

Installation of the Four Seasons Heater Core 98575A requires draining the vehicle's cooling system and removal of the dashboard or HVAC housing, depending on the model. Ensure all connections are clean and free of debris before installing the new core. Verify that the inlet and outlet tubes align correctly with the vehicle's heater hoses. After installation, refill the cooling system and check for leaks during operation.

Quality Assurance and Warranty

The Four Seasons Heater Core 98575A is manufactured to meet or exceed OEM standards, providing reliable performance and durability. This part undergoes rigorous quality control to ensure proper fit and function in compatible Ford and Mercury vehicles. Warranty coverage details should be confirmed with the product documentation or manufacturer.

BrandFour Seasons
Part Number98575A
PositionHeater Core
Length7-1/4
Thickness1-7/8
Width6
Core MaterialAluminum
Adjustable Pipe PositioningNo
Core Depth IN1.875
Core Height IN7.250
Core Width IN6.000
DescriptionHeater cores
Meets / Exceeds OEM?Yes
StyleAluminum heater core
Tube 1 IN0.625
Tube 1 MM15.875
Tube 2 IN0.625
Tube 2 MM15.875
TypeHeater core /aluminum

This part fits 43 vehicles. Search below:

YearMakeModelPositionNotes
1979FordBroncoN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1979FordF-100N/Aw/ Hi-Lo Vent System; Heater Core
1979FordF-150N/Aw/ Hi-Lo Vent System; Heater Core
1979FordF-250N/Aw/ Hi-Lo Vent System; Heater Core
1979FordF-350N/Aw/ Hi-Lo Vent System; Heater Core
1978FordBroncoN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1978FordF-100N/Aw/ Hi-Lo Vent System; Heater Core
1978FordF-150N/Aw/ Hi-Lo Vent System; Heater Core
1978FordF-250N/Aw/ Hi-Lo Vent System; Heater Core
1978FordF-350N/Aw/ Hi-Lo Vent System; Heater Core
1977FordF-100N/Aw/ Hi-Lo Vent System; Heater Core
1977FordF-150N/Aw/ Hi-Lo Vent System; Heater Core
1977FordF-250N/Aw/ Hi-Lo Vent System; Heater Core
1977FordF-350N/Aw/ Hi-Lo Vent System; Heater Core
1976FordF-100N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1976FordF-100N/Aw/ Standard Output Heater; w/ AC; Heater Core
1976FordF-150N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1976FordF-150N/Aw/ Standard Output Heater; w/ AC; Heater Core
1976FordF-250N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1976FordF-250N/Aw/ Standard Output Heater; w/ AC; Heater Core
1976FordF-350N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1976FordF-350N/Aw/ Standard Output Heater; w/ AC; Heater Core
1975FordF-100N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1975FordF-100N/Aw/ Standard Output Heater; w/ AC; Heater Core
1975FordF-150N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1975FordF-150N/Aw/ Standard Output Heater; w/ AC; Heater Core
1975FordF-250N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1975FordF-250N/Aw/ Standard Output Heater; w/ AC; Heater Core
1975FordF-350N/Aw/ Hi-Lo Vent System; w/o AC; Heater Core
1975FordF-350N/Aw/ Standard Output Heater; w/ AC; Heater Core
1974FordF-100N/Aw/ Standard Output Heater; w/ AC; Heater Core
1974FordF-250N/Aw/ Standard Output Heater; w/ AC; Heater Core
1974FordF-350N/Aw/ Standard Output Heater; w/ AC; Heater Core
1973FordF-100N/Aw/ Standard Output Heater; w/ AC; Heater Core
1973FordF-250N/Aw/ Standard Output Heater; w/ AC; Heater Core
1973FordF-350N/Aw/ Standard Output Heater; w/ AC; Heater Core
1968FordMustangN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1968MercuryCougarN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1967FordMustangN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1967MercuryCougarN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1966FordMustangN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1965FordMustangN/ACompatible with vehicles equipped with air conditioning.; Heater Core
1964FordMustangN/ACompatible 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:

10040115625921811332215025018226520279318285398304399007399022460300055457560930866030006860700285702150823128382314689007900709010045901043290229022094575961239857598575A99135C5DZ18476AD3TZ18476AFM9007FM9022H2222HT399007HT399022HT399022CZH182

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.