Do I need to clean or prep the mating surfaces before installing this gasket?

Yes. Clean both the header and manifold surfaces with a wire brush or gasket scraper to remove old gasket material and carbon buildup. A clean, flat surface ensures a proper seal.

Will this gasket work with a modified or aftermarket header?

This gasket is designed for the factory header application on the specified model years. If you're running an aftermarket header with different bolt patterns or flange dimensions, verify fitment before purchase.

What's the return process if this doesn't fit my application?

Contact our support team with photos of your setup and installation details. Most gasket returns are handled within 30 days of purchase — just have your order number ready.