Throttle Body Gasket 99-07 Chevy LS

The Throttle Body Gasket 99-07 Chevy LS is an OEM-specification sealing component engineered to maintain a perfect seal between your throttle body and intake manifold on fifth and sixth-generation Chevrolet LS-platform engines. As a seasoned mechanic, you know that even microscopic air leaks in this junction create vacuum anomalies that wreak havoc on fuel mixture calibration and idle quality. This gasket is the barrier that prevents those leaks, making it essential for anyone restoring, rebuilding, or maintaining LS-powered vehicles with factory precision.

Manufactured by MAHLE ORIGINAL under the CLEVITE brand—the same supplier trusted by Chevrolet factories—this gasket is precision-cut from composite material designed to compress evenly under throttle body bolt torque and resist thermal cycling without degrading. The thin, consistent 0.005-inch profile ensures uniform contact pressure across the entire sealing surface, critical for preventing the creeping air leaks that develop when inferior aftermarket gaskets compress unevenly. MAHLE's engineering guarantees that this gasket won't harden, shrink, or separate from its mounting surface over years of temperature swings and vacuum pulsation that LS engines produce.

Whether you're chasing a stubborn idle quality issue, rebuilding your throttle body during a valve cover gasket refresh, or swapping in a used LS engine, this gasket belongs in your parts kit. It fits all LS variants produced between 1999 and 2007—LS1, LS2, LS6, and truck-platform LS engines alike. Installation is straightforward: remove the throttle body, scrape away the old gasket material, clean both surfaces with solvent, position this gasket, and torque the throttle body bolts to factory spec. At less than a tenth of a pound, it's one of the lightest but most important details separating a smooth-running LS from one that idles rough and throws lean codes.