Looking through the forums at the spark plug info, some say use the stock Champions some dont, etc etc. Preference I understand, but I will just stick with stock specs.
So with that said...what are they?

I search Autozone website and got pages of stock plugs so Im not sure which one to use. Also, whats the best gap range?

This is for a 2002 5.9 engine with 111,000 miles on it. I do not know the maintenance history so can't say when last time these were swapped, but they havent been done in the past year since I have had it.

Probably wouldn't hurt to do wires and cap/rotor as well. Got part numbers for those?

Thanks

 

Why not pull one of your plugs and take it in? I know mine are a Champion 507 but I have an 04 5.7. Thats why i said go pull one and take it with you.

 

The part number off the plug is RC12LC4 the number you need at a parts store is 436. Those are both Champion numbers and will help you out.