br0wm

please be kind.

im considering changing my coils, plugs and wires and come across some very usefull diy's, but this concept of trailing and leading plugs just confuses me?

ive purchased 4 iridium plugs online, but now im unsure if there are specific plugs for the leading or trailing plugs

can someone help clarify this concept of leading and trailing plugs?

lta_ds_fs7

iTrader: (2)

Yes, there are two specific plugs for each...When you ordered them, did you specify you wanted 2 of each?

lta_ds_fs7

iTrader: (2)

If so, the bottom of the box should have an L or T...When you install them, there are little T and L marks embedded by each insert.

StealthTL

iTrader: (1)

Plug number ends in either L or T

L goes on the bottom (Lower)

T goes on top (Top)

...easy to remember, right?

ken-x8

Make sure you identify the plugs by the markings on the plugs, not just what the box says. Plugs sometimes wind up in the wrong boxes.

Ken

jcurrie777

Access through the front drivers-side wheel well. Change one at a time, so you don't get confused(Marked with T or L).

nycgps

iTrader: (1)

yes its "hole" specific. top is trailing, bottom is leading. plugs are d8ffernt between the 2.

Why? dont think u will be interested to know. just follow the rules.

br0wm

thanks for all the help.