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The 2012 Lexus GX460 is equipped with a timing chain rather than a timing belt. Timing chains are preferred as they typically last the entire lifespan of the vehicle, unlike belts that require periodic replacement. This is because the chain is internally located within the engine, offering more protection than the belt, which is exposed externally. While the Lexus manual states that the chain requires no regular inspection, it is recommended to check the tension and sprockets every 150,000 miles as a precaution.
The 2012 Lexus GX460 comes equipped with a timing chain.