If you have ever wondered whether different models of the same company can be installed with the same rebuilt automatic transmissions, here is some information that you can use.

Let us compare Kia Optima 2006 model and Kia Spectra 2006 model.

Kia Optima is a 2351 cc car, with 2.4 liters engine, 86.5 mm bore, 100 mm stroke and 10 compression ratio. On the other hand, Kia Spectra has a 1,975 cc 2 liters engine, 82 mm bore, 93.5 mm stroke and 10.1 compression ratio. The power specifications of the two models differ from each other as well.

You would be very surprised to find out that both cars are available in four speed automatic transmissions and five speed manual transmissions.

If you install a five speed automatic transmission designed for Kia Optima in Kia Spectra, you can be rest assured that you will have troubles sooner or later. The two models may be using the same type of automatic and manual transmission. However, the individual specification of the cars makes it impossible for one transmission to be installed into the other.

* - price as of 2/1/2006. Actual prices may vary.