Spark plugs 502 MAG MPI
08-14-2004 | 11:17 PM
#1
Thread Starter
AT Cult Member #3
Joined: Oct 2000
Posts: 20,711
Likes: 17
From: Pa.
Spark plugs 502 MAG MPI
What type of spark plugs do you use in your 502 MPI? I am replacing the AC Delco Rapidfire#1 that have been in my boat for 150 hours 
OE plugs were NGK. They don't look to bad for being in there for that amount of time...
OE plugs were NGK. They don't look to bad for being in there for that amount of time...
08-14-2004 | 11:42 PM
#2
Charter Member #1171
Joined: Feb 2001
Posts: 4,018
Likes: 21
From: Clearwater, FL
Re: Spark plugs 502 MAG MPI
I always ran the Rapid Fire,, had good luck with them.
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