Mine is rusty and the o-ring is worn out. It's not leaking yet but since we made the intake manifold and removed it and noticed rust etc we replaced it. I think this Dorman role is good. Dorman has been characterized by high quality for many years. However, I recently had a quality issue with the Dorman EGR reading. (It never worked) I'm sure I'll get 5 more horsepower by replacing it. (I'm just having fun)
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