Has anyone tried the Autolite 4303 XS? I happen to see one and it seems to be identical to the NGK - some vendors also list it as a replacement/direct fit. They are considerable cheaper than the NGK. (5-6 USD on Amazon) Image Unavailable, Please Login Image Unavailable, Please Login
NGK has been the go to plug for drivability issues for many cars. Autolite is never even on the radar screen. Driving a 599 and trying to save a few dollars on spark plugs? I don't know what to say. Buy an 8 cylinder car next time and save 33% I guess.
Might as well go for a 1 cylinder then... It isn't only about savings, but also finding alternatives were possible. Good to know that Autolite plugs aren't even -
You're not the only one who raised this issue... http://www.ferrarichat.com/forum/612-599/497827-spark-plugs.html
Same questions have been raised on oils, oil filters, and air filters. Same advice applies. Not worth the effort to save a buck or two. Just because it fits and is in someone's application chart, does not make it a good idea. NGKs were a huge boon to my Dino and Daytona in the good old days because of the heat range.
