Heater Box Assembly 3-Speed Mustang 1965-1966

CJ's Part Number:
97% of 100


  • Tap To View 3D Model
  • Includes Heater Box Gaskets
  • Includes Heater Box Seals
  • Includes Heater Housing Clips
MSRP $267.00
You save 19%

Heater Box Assembly for all 1965-1966 Mustangs with a 3-Speed Heater Motor.

Replace your damaged factory original or missing heater box assembly today! Check out this Heater Box Assembly for all 1965-1966 Mustangs with a 3-Speed Heater Motor from CJ Pony Parts!

Features and Benefits:
- Replaces damaged or missing heater box assembly
- Direct fit replacement
- Allows for easy access to install a heater core
- Pre-installed factory correct mounting brackets
- Pre-cut holes for heater core and resistor

This heater box assembly consist of a front and rear fiberglass casing with access doors just like the original unit. This factory style box is a direct replacement for all 1965-1966 Mustangs. The two piece design allows for easy access to install the heater core and inspect the working internals. The heater plenum attaches to this assembly and directs warm air throughout your Mustang. With this being a replacement unit all the factory correct mounting brackets are pre-installed letting you know everything will line up. This heater box assembly also features pre-cut holes for the heater core and heater resistor.

Kit Includes:
- Heater Box Gaskets
- Heater Box Seals
- Heater Housing Clips

Please Note: This Heater Box Assembly does NOT include the heater motor or the heater resistor.

Vehicle Fitment:
- 1965-1966 Mustang

California Residents: Proposition 65 Warning

Installation Difficulty


Intermediate skill is required for this installation.

Vehicle Fitment

This product will fit the following Mustang years:

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