1978-1982 C3 Heater Box Seal Kit with A/C -Full Foam and Rubber Set
Restore your climate control system with this exact reproduction Heater Box Seal Kit designed for 1978–1982 C3 Corvettes with factory Air Conditioning. This comprehensive kit includes die-cut sponge rubber and foam seals for a proper seal of all heater and A/C duct components—eliminating leaks and ensuring optimal airflow. If you're rebuilding or refurbishing your original heater box, this kit offers all the major gaskets and foam seals you’ll need for reassembly and proper function.
Kit Contents
• Evaporator Core Mount Seal
• Distributor to Side Duct Seals (x2)
• Deflector Foam Strips (x4)
• Deflector Housing to Duct Seal
• Inner Box to Firewall Seal
• Inner Box to Selector Seal
• Inner Box to Distributor Seal
• Inlet Pipe Seal
• Outlet Pipe Seal
• Heater Core Divider (Gray Foam)
• Heater Core Pipe Seal
• Heater Core Tube Seal
Tech Notes
This kit is designed to match original seal density and profile for proper compression and sealing. Use weatherstrip adhesive (not included) and refer to the included exploded diagram for installation sequence. Pre-fit all foam pieces before permanent installation.
Because Details Matter
When it comes to C3 climate control restoration, fit and seal integrity are everything. Leaky or missing foam seals can reduce blower efficiency, allow dust entry, and lead to erratic heating and A/C function. This kit helps you restore that showroom-level cabin control with factory-spec accuracy.
Also known under these part numbers: (For reference only)
- 2988K
- 453101
- 686420093275
- 8846402
- ZM-2536
- zm2536