+4 Boush an 9mm JBA WIRES
#27
I wouldn't say the other plugs were junk, they just aren't the optimal heat range and reach for Ford's 4.0L engines.
#29
It's amazing how bad Bosch plugs run with Ford's EDIS, but how well they
run in my gas Mercedes! However, after reading how the platinum electrodes
will fall out of the insulator on Bosch, I'm now running NGK platinums in my Mercedes.
#31
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