If you can get AC Delco easier, the Autolite #3923 replacement number is: AC
Delco - FR2LS.
Here are the gaps:
.035" = 0.889mm
.040" = 1.016mm
.0402" = 1.02mm **
.045" = 1.143mm
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
Subject: Re: DML: New Spark Plugs
Hi there Bob, I had a look under the hood of my truck and the listing for
the spark plugs was
"RC12LC4" 1.02mm
was wondering what was the thought on Bosch platinum as a substitute, for
the hard to find Autolights. Also enlighten me a little is 1.02mm the
same as .40"
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