Crazy spark plugs

[dturner479]

I just changed the spark plugs in my '07 cruiser. I expected to find two different brands of plugs, and i wasn't disappointed. In the passenger side bank were Densos that were gapped to the correct .044 and looked pretty good for 36k miles. On the driver's side were NGK's and they came out at .054 to .056 and looked like C&^P. Was it just par for the course of really bad quality control at Toyota?

 

[jmylie]

Over at the FJ Cruiser forum they wrote that the head is assembled with parts from 2 different facilities, hence 2 sets of plugs.

My plugs were about in the same condition, not bad for 30K miles.