1996 Ski-Doo Shop Manual, Volume 2, Page 191Get this manual
Section 06 ELECTRICAL b-S ectio 03 (SPA PL S)
DESIGN SYMBOLS USED IN NGK SPARK PLUGS
PRE FIX SU FIX WID AP
Thread diameter Heat rating numbers
19(34") TaperSeat
10 11 13 14 15 20
1.0 1.1 1.3 1.4 1.5 2.0
mm mm mm mm mm mm
(.040") (.044") (.050") (.055") (.060") (.080")
Firing end construction
A18141012mm12 19 Reach
Construction
ASpecial esignSingle Ground Special Alloy
Dual GroundSpecial Alloy
12.7(12") 11.2(716") m
GRacing Type GVRacing Version of V-TypeHalf eat RangeStandard enter Electrode