NGK PTR4B-15 - Alternative spark plugs

Replacement spark plugs for NGK PTR4B-15:

Brand Model
AC Delco 41-921
AC Delco 41-933
AC Delco 41-983
AC Delco 41-993
Autolite APP606
Champion RS12PYP
Denso 5070
Denso 5325
Denso IT16
Denso IT16TT
Denso PT16EPR-L13
Denso PTJ14R15
Denso Iridium IT16
Denso Iridium stk 5325
Denso stk 5070
General Motors 12565030
General Motors 24504873
General Motors 25161444
NGK stk 5146

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Applications of NGK PTR4B-15

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Brand Model Engine size HP KW Year Engine # of cyl Spark plug gap
BUICK LeSabre 3.8 1988 - 1991 C V6 6 1.5

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    The Spark Plug Cross references are for general reference only. Check for correct application and spec/measurements. Any use of this cross reference is done at the installers risk.
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