The Remflex 2013 is a 100% graphite exhaust header gasket for GM Big Block Chevy engines with large race round ports. The soft graphite crushes to conform to the sealing surfaces, fills minor imperfections, and rebounds as the joint heats and cools so it keeps a tight seal without repeated re-torquing.
- Material: 100% graphite
- Heat resistant up to 3,000 degrees F
- Built-in 50% crush fills gaps and surface imperfections up to 1/16 inch
- Rebounds against the sealing surfaces, so it never needs re-torquing
- Fits: GM Big Block Chevy, large race round port
- Part number: 2013
FAQ
What engine does the 2013 gasket fit?
It fits GM Big Block Chevy engines with large race round ports.
Does the 2013 need to be re-torqued?
No. The graphite rebounds against the sealing surfaces, so the gasket does not require re-tightening after installation.
Will it seal a warped or pitted surface?
Yes. The built-in 50% crush lets it fill gaps and surface imperfections up to 1/16 inch.
How much heat can the 2013 handle?
It is rated for continuous exhaust heat up to 3,000 degrees F.

