WolfgangFox
Member
Hey All,
Been reading about these SP546 spark plugs that are the one piece design. Can I install those into my 2005 Expy 5.4l 3v with no boot changes or anything?
I keep reading about black and brown boots, do you have to have the brown boots to even change over the plugs, or does it matter?
Been reading about these SP546 spark plugs that are the one piece design. Can I install those into my 2005 Expy 5.4l 3v with no boot changes or anything?
I keep reading about black and brown boots, do you have to have the brown boots to even change over the plugs, or does it matter?