is there a difference between years or engines on what auto trans counterweight they use? i have a 13b from a gsl-se that i need to find a counterweight for.

 

84-5 GSL-SE 86-88 Nonturbo 87-88 Turbo 89-91 Nonturbo 89-91 Turbo 93-95 -rew/-re
4.2 4.0 4.0 4.0 4.0 4.0

so to answerer your question the gslse counter weigh is not the same weight.

 

so i need a 4.2 is that pounds?

 

You need the one with the correct part#. While the weights may be the same, that doesn't mean the center of gravity and polar moment is the same. While the S4/S5s take a 4.0, yet the s5 rotors are lighter. So should they take the same counter weight? Probably not. Mazdatrix should have a list on thier website.