HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 98578 HVAC Heater Core
Part #: 98578

Four Seasons 98578 HVAC Heater Core

Heater Core
⚙️ 3 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heater Core
🚗Fitment: Ford and Mercury, Colony Park, LTD, and Marquis
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Heater Core Replacement for Ford and Mercury Vehicles

The Four Seasons Heater Core part number 98578 is designed to restore efficient heating performance in select Ford and Mercury models. Engineered with durable copper and brass materials, this heater core ensures consistent heat transfer and long-lasting operation for your vehicle's HVAC system.

  • Core dimensions: 6 inches length, 7-5/8 inches width, 1-7/8 inches thickness
  • Constructed from copper/brass for enhanced durability and heat conduction
  • Core depth of 1.875 inches and core height of 6.000 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

Four Seasons Heater Core Product Line Overview

The Four Seasons Heater Core line focuses on providing high-quality HVAC heater cores that meet or exceed original equipment manufacturer standards. This product line emphasizes durable materials such as copper and brass to ensure efficient heat transfer and corrosion resistance. The 98578 heater core is part of this line, offering a direct replacement solution for specific Ford and Mercury vehicles.

Detailed Product Description

This HVAC heater core from Four Seasons features a copper/brass construction that supports effective heat exchange within the vehicle's heating system. With precise core dimensions of 6 inches in length, 7-5/8 inches in width, and 1-7/8 inches in thickness, it fits securely in the designated space. The inlet and outlet tubes both measure 0.625 inches in diameter, matching OEM specifications for seamless integration. The heater core is designed without adjustable pipe positioning, ensuring a straightforward replacement process. Compatible with Ford Colony Park, LTD, and Mercury Marquis models, this part number 98578 is engineered to restore proper cabin heating performance.

Common Issues Addressed by This Heater Core

  • Insufficient cabin heat due to clogged or leaking heater core
  • Coolant leaks inside the vehicle causing foggy windows or damp carpets
  • Overheating engine caused by compromised heater core function
  • Unpleasant odors from coolant entering the HVAC system
  • Reduced HVAC system efficiency impacting passenger comfort

Installation Notes and Tips

When installing the Four Seasons Heater Core 98578, ensure the vehicle is compatible by verifying the make and model: Ford Colony Park, LTD, or Mercury Marquis. Drain the cooling system before removal to prevent spills. Handle the copper/brass core carefully to avoid damage to the tubes and fins. Since this heater core does not feature adjustable pipe positioning, align the inlet and outlet tubes precisely with the vehicle’s HVAC connections. Refill and bleed the cooling system after installation to avoid air pockets and ensure optimal heating performance.

Quality Assurance and Warranty

The Four Seasons Heater Core 98578 meets or exceeds OEM standards, providing reliable performance and durability. Manufactured with corrosion-resistant copper and brass materials, this heater core is built to withstand typical automotive operating conditions. While specific warranty details are not provided, Four Seasons products generally come with a limited warranty covering defects in materials and workmanship.

BrandFour Seasons
Part Number98578
PositionHeater Core
Length6
Thickness1-7/8
Width7-5/8
Core MaterialCopper
Adjustable Pipe PositioningNo
Core Depth IN1.875
Core Height IN6.000
Core Width IN7.625
DescriptionHeater cores
Meets / Exceeds OEM?Yes
StyleCopper/brass heater core
Tube 1 IN0.625
Tube 1 MM15.875
Tube 2 IN0.625
Tube 2 MM15.875
TypeHeater core /copper brass

This part fits 3 vehicles. Search below:

YearMakeModelPositionNotes
1968FordLTDN/ACompatible with models that do not have air conditioning.; Heater Core
1968MercuryColony ParkN/ACompatible with models that do not have air conditioning.; Heater Core
1968MercuryMarquisN/ACompatible with models that do not have 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:

10040310040717110161812053221625010227930739900139902055457860931166030026603067685270232490100479020902009039903909457898578C5AZ18476AC8AZ18476BD0TE18476BD0TZ18476BD2HZ148476BD9HZ18476DDOTZ18476BEOHT18476BAFM9020H2280HT399020ZH102

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