Correct Heater Core Replacement 5/8 Inlet Size. 3/4 Outlet Size 9.5 Long X 6.375 Wide 2. Even when repaired and tested, original heater cores often spring new leaks due to age and weakness in the core and seams at the tanks. This is a sure-fire way to ruin the carpet in your Chevy's interior! We always recommend replacing your Chevelle or Malibu's heater core even before the first signs of trouble. The part features an all new core soldered to new top and bottom tanks and brackets. It is ready to install inside your stock heater box assembly.
| Make | Model | Years |
| Chevrolet | Chevelle | 1964 - 1967 |
| Chevrolet | Malibu | 1964 - 1967 |
