Parts for your 2011 Lexus Is-Manifold gasket

2011 Lexus IS manifold gasket: what it does and when to replace it

Based on Lexus Technical Information System (TIS) repair manuals for the 2011 IS range (IS 250/350/IS F) and the Toyota Electronic Parts Catalogue, the vehicle is fitted with both intake manifold gaskets and exhaust manifold gaskets. The factory procedures detail manifold removal and refit with gasket replacement and torque sequences, confirming the part is relevant and used across the 4GR-FSE, 2GR-FSE and 2UR-GSE engines.

On a 2011 Lexus IS, the manifold gaskets seal the joins where the intake manifold meets the cylinder heads (keeping unmetered air out) and where the exhaust manifolds meet the heads (keeping hot exhaust gases in and the O2 sensor readings stable). In short, they protect performance, fuel economy and emissions, and keep noise and fumes where they should be.

There’s no fixed kilometre-based replacement interval for manifold gaskets on these models