Do I need to clean the old gasket material before installing these?

Yes. Scrape the mounting surface clean with a gasket scraper or brass brush to remove all old material and debris. A clean surface ensures proper sealing and prevents leaks.

Will these gaskets work with my existing header bolts?

These gaskets are designed for factory bolt holes. Reuse your original bolts — just clean them and apply fresh gasket maker or use the gasket faces dry, depending on your header design. Torque per your vehicle's service manual.

What if I'm installing a different brand header—will these still fit?

These gaskets are spec'd for factory mounting points. If you're using a different header, verify it shares the same bolt pattern and port layout before ordering. Contact us with your header brand and model if you're unsure.