The original upper shock mount on certain vehicles is made of aluminum that corrodes and cracks. This Dorman OE FIX replacement features upgraded high-strength steel to prevent future failures. Product Features:Upgraded design - this replacement shock mount features durable steel to improve upon the original aluminum constructionApplication specific - designed to match the original shock mount on certain Ford, Lincoln and Mazda vehiclesHardware included - mount comes with two new nuts for ease of installationQuality engineering - designed in the United States and backed by decades of automotive aftermarket experience