Replace your heater box seals with precision die-cut neoprene seals that restore original heating and sealing efficiency. Each complete kit includes core to box seal, main duct flap door, intermediate plenum flap door, and core outlet tube seals. All seals are die cut for exact replacement. Note: Not for use on vehicles equipped with AC. Fits all small block and big block heater boxes.
1964-72 Chevelle w/o AC