MustangWorks.com : Ford Forums - View Single Post

289 · 12-26-2008, 07:22 PM

I see the UR45 is the stock replacement spark plug for the 87-93 5.0 with stock heads but can I use a UR5, a cooler plug since I'm running a wet NOS system?

12-26-2008, 07:22 PM	#1
289 Registered Member Join Date: Jan 2000 Location: Mount Joy, PA , U.S. Posts: 198	NGK spark plug question I see the UR45 is the stock replacement spark plug for the 87-93 5.0 with stock heads but can I use a UR5, a cooler plug since I'm running a wet NOS system?