Yup............ It's great........ giving hex sizes, heat ratings, and electrode/thread depth, and thread sizes. You can pick any plug combination to fit any application. Getting the right plug electrode length/depth is something that is commonly overlooked. You need to get the correct spark delivered into the combustion chamber at the right location. Your engine will run without all this tech info but not like it should and this is the info that I have learned from racing and experience. It all carries over into all IC engine apps big and small. Once you learn it you will achieve "karma"! LMAO! Funny but true!

The true reward from all this is when someone compliments you on how well your engine runs.

SPEEDY G