Car guys and gals, if you've got an exhaust leak or are installing aftermarket headers, this DNA Motoring gasket set is what you need. These aren't your average gaskets - they feature aluminum reinforced graphite construction that can handle the constant heating and cooling cycles of your engine. When exhaust manifold gaskets fail, you're not just dealing with annoying noises - you're losing performance and potentially damaging other engine components with those escaping hot gases. This complete hardware kit has everything you need for proper header installation, replacing missing or damaged gaskets with quality parts. It fits specific models like 94 Mazda B4000 4.0L V6, 91-94 Mazda Navajo 4.0L V6, 90-94 Ford Ranger 4.0L V6, and 91-94 Ford Explorer 4.0L V6, plus it's compatible with header model HDS-FR90+Y. Fair warning though - installation instructions aren't included, so you'll need some mechanical knowledge or access to repair manuals. But if you know what you're doing, this kit will have your exhaust sealed up tight and your engine running right. No more performance loss from leaky gaskets!