Most helpful critical review
Use at your own risk
on May 5, 2015
My Son and I installed this on his 2003 Taurus, a job which took perhaps one hour. The synchronizer seemed to be well made and nicely finished. We started the car, it idled fine for a few minutes, and away he went. 5 miles later the oil pressure light came on, quickly followed by the check engine light. He drove a few minutes more and pulled over when he heard the valves clattering. The car was towed to a mechanic who found that the brand new Richporter synchronizer had seized up and would no longer spin. This in turn sheared the pin holding on the gear, causing the gear to spin on the shaft, and stopping the oil pump, which really isn't something you want to happen on your car. Naturally, when the synchronizer was removed from the engine, the gear which had been attached to it, fell off inside the engine, which isn't good either.
I was foolish to try using this part instead of an original Ford / Motorcraft synchronizer like the mechanic used, and learned an expensive lesson. My thinking was it's such a simple part, how could someone screw it up? Well, Richporter Technology screwed mine up. Luckily the engine survived without seizing up and all is now well. As a full disclosure, I did not buy this from Amazon, but rather from O'Reilly Auto Parts, with their lifetime guarantee, which only covers the part of course. Since they don't seem to have comments on their website, I'm posting this here.