EGR Tube Gasket 99-13 Chevy LS

The EGR tube gasket 99-13 Chevy LS is a critical sealing component that prevents exhaust gas recirculation system leaks in one of the most popular engine platforms for street and performance builds. This OEM-grade gasket sits between the EGR tube and cylinder head, maintaining a high-temperature seal that keeps unburned gases from escaping into the engine bay. LS engine owners—whether running stock, turbocharged, or supercharged setups—rely on this gasket to prevent vacuum leaks that cause rough idle, check engine lights, and fuel trim errors.

Manufactured by MAHLE ORIGINAL/CLEVITE under part number G31535, this gasket is engineered to withstand continuous exposure to exhaust temperatures and the cycling stress of EGR flow. The gasket material provides reliable sealing across the 1.12-inch bore and maintains its integrity through thousands of heat cycles—critical for engines operating above stock power levels where thermal stress accelerates gasket degradation. Proper sealing eliminates the risk of post-combustion gas leakage, which would otherwise throw diagnostic trouble codes and compromise air-fuel ratio calibration.

This gasket fits all LS variants from 1999 through 2013 model years, including LS1, LS2, LS3, and LS9 engines in Camaros, Corvettes, Silverados, Suburbans, and Tahoes. Replacement is straightforward and recommended whenever the EGR tube is removed for cleaning, repair, or modification. Any tuner or shade-tree mechanic performing EGR delete, EGR cooler service, or intake manifold work should replace this gasket during reassembly to avoid future vacuum leaks and ensure emissions compliance for street-driven vehicles.