That’s because traditional exhaust gaskets are made of composite materials-blends of natural fibers and synthetic compounds that are bound together using rubber. And unlike traditional gaskets, they won’t shrink, so they never require re-torquing.Ĭuriously, the number one cause of exhaust gasket failure is heat-the very thing exhaust gaskets are supposed to withstand. A new set of average gaskets won’t fix the problem-but Remflex gaskets, with a 50% crush built in-can seal gaps as large as 1/16-inch. Once the sealing surface is warped, leaks are imminent-and once there is a leak, pitting of the exhaust port sealing surface usually follows. Constant thermal cycling, especially in high performance and/or high-load environments, causes warping of header flanges and cast iron exhaust manifolds-even the exhaust flange of the cylinder head itself. In truth, a thicker flange does help, but it can’t solve the problem of warping altogether. Remflex gaskets work because they solve the two main problems associated with sealing an exhaust flange: Warping, and gasket failure.Ī common misconception is that, if you spend a lot of money for high-quality headers with thick flanges, leaks will not be an issue. Now, we’re bringing this technology to enthusiasts of all kinds to eliminate exhaust leaks for good! Whether you have an old pick-up that needs a manifold gasket, or a race car with custom-built headers, you can be assured that Remflex exhaust gaskets will work properly the first time, every time. Remflex’s unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees-day after day, week after week, year after year. Remflex exhaust gaskets rebound 30%, creating an optimum seal that eliminates the need to re-torque! This allows them to fill gaps in the flange surface up to 1/16-inch!ġ00% flexible graphite construction means Remflex gaskets are good for up to 3,000 degrees F-far exceeding that of any vehicle’s exhaust system temperature! Remflex exhaust gaskets come in a standard 1/8-inch thickness and are designed to crush 50%. With hardware, the job would cost about $206 using factory parts, or about $196 using aftermarket parts.We’re so confident you’ll love Remflex exhaust gaskets that we back them with a 100% no-questions-asked satisfaction guarantee! If you’re not completely satisfied with Remflex exhaust gaskets for any reason, return them within six months after purchase, along with proof of purchase and receipt, and we’ll either replace them or give you your money back! A factory manifold gasket for the right costs about $26, and an Apex gasket costs about $16. Adding about $20 for hardware, the total cost to complete the job would be about $226 using factory parts, or about $216 using aftermarket parts. To replace the right side exhaust manifold gasket, the labor time is estimated at 1.6 hours. A factory manifold gasket for the left side is about $26, and an Apex gasket costs about $16. For a 20 4WD with a 5.7L engine, the labor time to replace the left exhaust manifold gasket is estimated at 1.8 hours.The total cost would be about $174 to replace either exhaust manifold gasket. A factory manifold gasket costs about $8, and a set of exhaust bolts costs about $16. For a 2005 GMC Sierra 1500 4WD with a 5.3L engine, the labor time to replace either the left or right exhaust manifold gasket is estimated at 1.5 hours.Some estimates of the cost to replace exhaust manifold gasket are illustrated below using common vehicles at $100 an hour labor rate: Costs of Exhaust Manifold Gasket Replacement
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