RX7wieler

i was wondering if there is a diffrence in leading and trailing plugs on a first gen cuz i heard that they were the same can anyone help me out

SunRedRX7

Here is the info on stock spark plug selection for all the gens
http://www.mazdatrix.com/ign-2.htm

vipernicus42

iTrader: (4)

yeah, 2nd gens have different leading/trailing plugs, but on the 1st gen they're all the same.

Choose either BR8EQ-14s or BR9EQ-14s, the 8s are city, 9s are highway

Jon

RX7wieler

thanks i got them installed and everything works good

Rx-7Doctor

iTrader: (13)

Jon,
Small correction.
SA's with stock dist do not use the above plugs. Only if they have been converted over to FB systems.

Forgot to add that the 12a's use the 8's whether city or highway. The 13b's use the 8's or 9's depending.

kgray

^yep and all of the SA guys should too.