With a 30 year-old Weber, I have bought replacement flavorizer bars 4 or 5 times over the years. First with the standard steel ones from Weber and later the SS knockoffs from ebay. Frankly, while the latest bars (from Ebay) fit well, they are made of a lighter gauge SS than some before. Moreover, as these age, they sluff off layer of corroded steel, so the thinner the bars, the shorter their life. Therefore, I don't think that these will last very long before turning to flakey rust.