Seems to be a quality built product. Was easy to install and immediately took care of the cam timing errors I was previously getting. Did have a warranty seal that went under the seal between the cap and the body that could have been a source for water intrusion. Took my chances and removed the seal to try and get the best water tight seal between cap & body. Time will tell how well it works, cheaper brand from big online retailer only lasted two years, hoping this one outlasts the rest of the car.