XJ-S V12-5.3L (1982)
Spark Plug: Technical Service Bulletins
Spark Plugs - Factory Approved Replacements
DATE . . . MARCH, 1985
NUMBER . . . J85/25
MODEL:
XJ-S HE
SUBJECT:
SPARK PLUGS, FACTORY FITMENT
KEY POINTS:
FACTORY FITTING OF VARIOUS SPARK PLUG TYPES.
With reference to the mailgram on the above subject, dated February 21, any of the following spark plugs are factory fitted and approved for use in the
V12 engine:
Unipart - GSP 360
Unipart - GSP 466 (JLM 204)
NGK - B6EFS
Dealers are advised not to replace these plugs unless a problem relating to spark plugs is experienced.
The only recommended service replacement spark plugs are Unipart GSP 466 (JLM 204), available from Jaguar Cars Inc.
Spark plugs should not be mixed. Only full engine sets of one type/brand must be fitted.
