Description / Abstract:
This SAE Standard applies only to spark plugs used for ground
vehicles and stationary engines.
This document is intended to serve as a guide to dimensions
common to the majority of current production spark plugs and future
applications. It is not the intent of this document to prohibit the
manufacture of spark plugs having dimensions differing from those
presented. Many applications exist which require specialized or
nonstandard spark plugs. It is recommended that this document be
used in spark plug design and engine applications wherever
possible. Whenever design situations arise that prevent the use of
one of these standard spark plugs, a spark plug manufacturer should
be contacted for guidance.