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Spark Plugs

SPARK PLUG TYPE

Application Nippondenso NGK
Metro 1W16EPR-U11 (1) R43XLS
Prizm Q16R-U BPR5EY
Spectrum W20EXR-U11 BPR6ES-11
Tracker 1W16EPR-U11 (1) R43XLS
(1) AC type spark plug.
SPARK PLUG SPECIFICATIONS

Application Gap In. (mm) Torque Ft. Lbs. (N.m)
Metro .040 (1.05) 15-22 (20-30)
Prizm .031 (.8) 14-22 (20-29)
Spectrum .040 (1.1) 18.6 (13.7)
Tracker .040 (1.05) 15-22 (20-30)
Fig 1: Spectrum & Tracker Firing Order & Distributor Rotation
G121560Courtesy of GENERAL MOTORS CORP.
Fig 2: Metro Ignition Timing Mark Location
G121561Courtesy of GENERAL MOTORS CORP.
Fig 3: Prizm Firing Order & Distributor Rotation
G121562Courtesy of GENERAL MOTORS CORP.
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