AT in engine number

[JFP in PA]

Originally Posted by scalest

I am trying to confirm that "AT" in the engine number means that it is rebuilt? Does anyone have some solid facts on this? The engine number and VIN do not seem to match on the car. I am not overly concerned and in fact would rather that it was a rebuilt engine so I don't have to worry about the IMS bearing. Anyone have any solid information on this? Many thanks!

It is a factory reman engine that matches what was originally in the car.

[piper6909]

Originally Posted by JFP in PA

It is a factory reman engine that matches what was originally in the car.

It doesn't always match what was originally in the car. I have a 2002 with an "AT" engine. If I'm not mistaken, that model year came with a single-row IMS bearing. I planned on changing it while the transmission was out for service and the IMS tool I bought from LN wouldn't even fit the bolt. It turns out I have the engine with the upgraded LARGER single-row IMSB. LN wouldn't take the new, unused tool back. As you might guess, I'm still not happy with them.