The Torque Solution thermal intake manifold gasket for Honda Civic Si (1999–2000, B16A1) serves as a replacement seal between the intake manifold and cylinder head while helping manage heat transfer into the intake. It’s intended for intake service and rebuilds to restore proper sealing and vacuum integrity, supporting steady fueling and idle characteristics for the specified Civic Si models.

Torque Solution Thermal Intake Manifold Gasket: Honda Civic Si 99-00 B16a1