Permatex Ultra Copper Gasket Masker is recommended for all exhaust/header connections to replace tradtional gaskets. (It is not recommended between the header and head. OEM Gasket is used there).
Directions for Use:
For best results, surfaces should be clean and dry.
Cut nozzle and apply a continuous 1/16” to ¼” (2 to 6mm) bead of silicone to one surface, surrounding all bolt holes. Assemble parts immediately while silicone is still wet. Finger tighten until material begins to squeeze out around flange.
Let dry for one hour then tighten to torque specifications.
Allow 24 hours to fully cure before filling with fluids or returning to service.
Replace cap after use.