Manufactured of P73 Ferroglass non-asbestos facing material for long life
Mechanically clinched to a perforated metal core for superior sealing and strength
The inorganic filler system provides strong bolt torque retention properties
Includes (2) Sets of Collector Gaskets 2-1/2" & 3.0"
Replacement Header Gaskets for 283-400 Small Block Chevy full length headers. Kit consists of (2) Header flange gaskets and (2) 3" collector gaskets and (2) 2.5" collector gaskets