Encouraged by this forum and decide to DIY for my 02 BMW325CI spark plug.

After searching this forum and I found most of spark plug requires 18 feet/pound(25nm) for E46, but some post say they put 30nm. Now I am confusing how much torque spec for the spark plug?

I don't want to either overtight or loose the spark plug.

Thanks in advance!

According to the BMW TIS:

You have the M54 engine which has spark plugs with M14 x 1.5 thread. This calls for a tightening torque of 31 +/- Nm.

On the off-chance that your engine takes spark plugs with M12 x 1.25 thread, then the right torque is 23 +/- 3 Nm.

Thanks for explanation.

According to the BMW TIS:

You have the M54 engine which has spark plugs with M14 x 1.5 thread. This calls for a tightening torque of 31 +/- Nm.

On the off-chance that your engine takes spark plugs with M12 x 1.25 thread, then the right torque is 23 +/- 3 Nm.

Don't forget to gap your spark plugs properly if not pre-gapped from the factory.

Thanks for remind, but I don't understand what is gap the spark plug properly? Could you please make it more clear. I bought NGK spark plug BKR6EQUP.

Hopefully, this plug has pre-gapped.

Don't forget to gap your spark plugs properly if not pre-gapped from the factory.

The gap is the space between that little rod which sticks up from the center white electrode and the arm which curves over it.

BTW torque is 22 lbs/ft

Thanks. But how to properly to "gap the spark plug"? Sorry to ask this question again since this is the first time I DIY and don't want to mess the whole thing up.


The gap is the space between that little rod which sticks up from the center white electrode and the arm which curves over it.

BTW torque is 22 lbs/ft

I google it and understand now. Good remind.




The gap is the space between that little rod which sticks up from the center white electrode and the arm which curves over it.

BTW torque is 22 lbs/ft

you fucktards. you can't really change the gap on a stock plug.
gapping is only done on single prong plugs.

haha.. fucktard! unless you get some cheap ass plugs for like 50 cents a piece chances are they are pre gaped. look at the box the plugs come in