Packard Forum Index » Pre-War (1899-1942)

I have a '38 1608 with cast iron heads. What plugs do I use?

They are 14mm.

Thanks in advance.

Bill

Autolite 303 would be fine, I've use it in most all Packards of the 30s, 40s and 50s that use 14mm plugs and they all seem to thrive on it. Available at NAPA and other local auto parts stores. Just recently Autolite changed the appearance of these plugs by eliminating the black oxide finish and replacing it with bright metal plating which would be incorrect for pre-1956. So if you want authentic appearance you might want to paint the metal shell black.