Re: Johnson Fdl-19d 18 Hp
Ignition coils, Sierra p/n 18-5181. Normally right here at iboats would be as good a place as any. Unfortunately they show they are currently "out of stock". laingsoutboard.com is another good spot. Of course you can also get them through your local Napa or CarQuest auto parts store but you will pay a bit more and you'll need them to order them in for you. And the kid behind the counter will likely look at you like you've grown horns but they can get them.
You might want to think about points and condensers too. P/Ns 18-5156 and 18-5199 respectively.
Cheers..................Todd