HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 91775 HVAC Heater Core
Part #: 91775

Four Seasons 91775 HVAC Heater Core

Heater Core
⚙️ 6 vehicles fit this part
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Select your vehicle to confirm fitment
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Heater Core
🚗Fitment: Ford, Festiva
🔄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 Festiva

The Four Seasons Heater Core 91775 is designed to restore efficient heating performance in your Ford Festiva. Crafted from durable copper and brass materials, this heater core ensures consistent heat transfer and long-lasting operation.

  • Compatible with Ford Festiva models
  • Constructed from copper/brass for enhanced durability
  • Core dimensions: 5-1/2" length, 6-5/8" width, 1-1/4" thickness
  • Meets or exceeds OEM specifications
  • Part number 91775 for precise identification

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 and precise fitment, ensuring that the heater core integrates seamlessly with your vehicle’s heating system. The 91775 heater core is part of this line, offering a copper/brass construction that supports efficient heat exchange and durability.

Product Details and Specifications

This HVAC heater core features a copper core material with brass components, providing excellent thermal conductivity and resistance to corrosion. The core measures 5.5 inches in height, 6.625 inches in width, and 1.25 inches in depth, with tube diameters of 0.625 inches (15.875 mm) for both inlet and outlet. The fixed pipe positioning design ensures a direct replacement without the need for adjustments. Designed specifically for the Ford Festiva, this heater core meets or exceeds OEM standards to maintain your vehicle’s heating efficiency.

Common Issues Addressed by This Heater Core

  • Insufficient cabin heat during cold weather
  • Coolant leaks inside the vehicle’s HVAC system
  • Clogged or corroded heater core reducing heat output
  • Unpleasant odors caused by leaking coolant
  • Overheating engine due to compromised heater core function

Installation Notes and Tips

When replacing the heater core in your Ford Festiva, ensure the cooling system is properly drained before removal. Handle the copper/brass core carefully to avoid damage to the fins and tubes. Verify that the replacement part number 91775 matches your vehicle’s specifications. After installation, refill and bleed the cooling system to prevent air pockets and ensure optimal heater performance.

Quality Assurance and Warranty

The Four Seasons Heater Core 91775 is manufactured to meet or exceed OEM quality standards, providing reliable performance and durability. While specific warranty details are not provided here, Four Seasons products typically come with a limited warranty covering defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.

BrandFour Seasons
Part Number91775
PositionHeater Core
Length5-1/2
Thickness1-1/4
Width6-5/8
Core MaterialCopper
Adjustable Pipe PositioningNo
Core Depth IN1.250
Core Height IN5.500
Core Width IN6.625
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 6 vehicles. Search below:

YearMakeModelPositionNotes
1993FordFestivaN/AHeater Core
1992FordFestivaN/AHeater Core
1991FordFestivaN/AHeater Core
1990FordFestivaN/AHeater Core
1989FordFestivaN/AHeater Core
1988FordFestivaN/AHeater 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:

156255718118212671279372398265554775609364660345470267182314478265901024890271917759477598775E8BZ18476AE9BZ18476AHT398265

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