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SAE J548/1 (MAR2013)

Current Revision

Spark Plugs

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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. Figures 1 to 13 and Tables 1A to 6 show typical configurations of unshielded and shielded spark plug designs, their dimensional characteristics, installation, threaded hole, and spark plug thread sizes.

SDO SAE: SAE International
Document Number J548/1
Publication Date March 11, 2013
Language en - English
Page Count 18
Revision Level 201303
Supercedes
Committee
Publish Date Document Id Type View
March 11, 2013 J548/1_201303 Revision
March 24, 2000 J548/1_200003 Revision
June 1, 1992 J548/1_199206 Revision