Four Seasons 91775 HVAC Heater Core
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Four Seasons
 Heater Core

Four Seasons 91775 HVAC Heater Core

Brand Four Seasons 91775
Length 5-1/2
Thickness 1-1/4
Width 6-5/8
Core Material Copper
Adjustable Pipe Positioning No
Core Depth IN 1.250
Core Height IN 5.500
Core Width IN 6.625
Description Heater cores
Meets / Exceeds OEM? Yes
Style Copper/brass 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 /copper brass
Product line Heater Core
Fits Ford · 6 vehicles

OE direct replacement. Meets or exceeds OEM requirements for dependable fit and function.

Copper/brass construction. Built with a copper core for efficient heat transfer.

Heater core. A direct HVAC replacement for restoring cabin heat.

Cross-references Anchor 2671, APDI 9010248 and BBB Industries 8265 for the same application. See all 19.

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Four Seasons 91775 Heater Core

Four Seasons 91775 is a copper/brass heater core built for HVAC heater core replacement in the 1988-1993 Ford Festiva. With a copper core material and OEM-level dimensions, it supports proper cabin heat transfer for a direct-fit style repair. This Four Seasons heater core is a practical choice when servicing a Ford Festiva heater core issue and restoring consistent interior heat.

Key Features

  • Brand: Four Seasons Heater Core
  • Part number: 91775
  • Style: Copper/Brass Heater Core
  • Core material: Copper
  • Core dimensions: 5-1/2 in. height, 6-5/8 in. width, 1-1/4 in. depth
  • Tube size: 0.625 in. / 15.875 mm on both connections
  • Meets or exceeds OEM requirements
  • Compatible with 1988-1993 Ford Festiva heater core applications

Product Details

The Four Seasons Heater Core line focuses on HVAC replacement components for heating system service. Part number 91775 uses a copper/brass construction and fixed pipe positioning, with dimensions that align to the listed application for the Ford Festiva. For buyers searching for a 1988-1993 Ford Festiva heater core, 91775 provides a straightforward replacement option for restoring heat exchange inside the HVAC case. This part cross-references APDI 9010248 for the same application.

Common Problems This Part Can Address

  • Weak or uneven cabin heat
  • Coolant odor inside the vehicle
  • Moisture or fogging from a leaking heater core
  • Restricted heat output caused by internal core deterioration
  • HVAC service needs on a Ford Festiva heater core replacement

Installation Notes and Tips

Verify the heater core dimensions, tube size, and pipe orientation against the removed unit before installation. Inspect the HVAC case, hoses, and coolant connections for wear or contamination during service. Proper coolant refill and system bleeding are important after heater core replacement to help maintain normal heater performance. Fits 1988-1993 Ford Festiva, N/A.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM requirements. The copper/brass construction and application-specific sizing support a service replacement built for the listed Ford Festiva fitment.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1993FordFestivaN/AHeater Core
1992FordFestivaN/AHeater Core
1991FordFestivaN/AHeater Core
1990FordFestivaN/AHeater Core
1989FordFestivaN/AHeater Core
1988FordFestivaN/AHeater Core
Directly replaces or cross-references 19 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 2671APDI — 9010248BBB Industries — 8265Four Seasons — 91775Global Parts Distributors LLC — 1811821Nissens — 94775OSC — 9877590271279372398265554775609364702671156255766034548231447E8BZ18476AE9BZ18476AHT398265