Spark plug interchangeability question

[gotsomegetsome]

might be stupid... but

I was wondering if all 7m, 1jz, and 2jz spark plugs were interchangeable. AFter looking for specs to compare with I came up with the answer yes

However, I still wanted a 3rd party opinion/answer

thanks people

 

[gofastgeorge]

The length of the porcelin varies on some of these,
and because the plug wires on the 7M also locate on the plug valley cover,
there may be a fitment problem.
So double check dimensions before laying out cash for plugs for a different engine.
There is more to fitment besides thread size, and length.

 

[supradjza80]

short answer no. 7m plugs are different than the JZ seires.

 

[Jeff Lange]

7M uses JIS-sized spark plugs. (Denso Q series)
1JZ/2JZ uses ISO-sized spark plugs. (Denso K series)

PS: Thread Moved.

Jeff