I bought a set and they are identical thickness to the ones I replaced. I like the lock on the drivers side. Even if it deteriorates the lock will keep the engine from trying to flip over. I received a bad passenger side mount and called the about it. I had a new one two days later for free. No questions asked. Schumachers is the only place for me to get my motor mounts. In fact I used their kit to convert my 4 cyl Dakota to a small block. Bolted right up and have had no troubles with it at all. Very happy with the quality and pricing.