Four Seasons 91508 HVAC Heater Core

Four Seasons 91508 Heater Core for Dodge Challenger

The Four Seasons 91508 heater core is a copper/brass HVAC replacement built for heat transfer and OE-style fitment. It is listed for 1970-1974 Dodge Challenger models without air conditioning, making it a direct search match for Dodge Challenger heater core replacement needs.

Key Features

• Copper core material with copper/brass heater core construction
• Dimensions: 7-3/4 in. length, 6 in. width, and 1-7/8 in. thickness
• Core height 7.750 in., core width 6.000 in., core depth 1.875 in.
• Tube sizes: 0.500 in. and 0.625 in.
• Meets or exceeds OEM requirements
• Fixed pipe positioning; adjustable pipe positioning: No

Product Details

Four Seasons Heater Core part number 91508 is a copper/brass HVAC heater core engineered for vehicles that need dependable cabin heat performance. The compact core dimensions and tube sizing support proper integration into the heater case, while the OE-style construction helps maintain factory-like thermal transfer. This part cross-references Spectra Premium 94508 for the same application.

For buyers searching Dodge Challenger heater core replacement parts, Four Seasons 91508 is listed for 1970, 1971, 1972, 1973, and 1974 Dodge Challenger models without air conditioning. If you are restoring or servicing a classic Dodge Challenger heating system, this heater core provides a direct-fit reference for the specified application.

Common Issues This Part May Address

• Weak or uneven cabin heat
• Coolant seepage from the heater core area
• Restricted coolant flow through the HVAC heater circuit
• Fogging or sweet odor caused by heater core leakage
• Loss of heater performance in a 1970-1974 Dodge Challenger without air conditioning

Installation Notes and Tips

Verify heater box dimensions, tube orientation, and hose routing before installation. This part uses fixed pipe positioning, so confirm the existing HVAC layout matches the listed tube sizes and core dimensions. For classic Dodge Challenger heater core service, inspect hoses, clamps, and the heater control valve area at the same time to reduce repeat labor.

Quality Assurance

Four Seasons lists this heater core as meeting or exceeding OEM requirements. The 91508 part number is also referenced across multiple aftermarket catalogs, including APDI 9010106 and Edelmann 91508, which helps confirm application alignment for the specified Dodge Challenger fitment.