The hole should not be larger than 16.8mm or .660 inches.
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SPARK PLUG KITS
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KIT SIZE
BIG-SERT
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KIT PART NO.
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|
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LENGTH
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WASHER SEAT P/N
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TAPER SEAT P/N
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INCHES
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METRIC
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|
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5141S
——-
5141E
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.370
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9.4mm
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51401A
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51451A
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.430
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11mm
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51403A
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51453A
|
|
.600
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15mm
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51405A
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51455A
|
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.660
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16.8mm
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51407A
|
51457A
|
|
.964
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24.5mm
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n/a
|
51458A
|
| aluminum spark plug inserts,spark plug inserts aluminum,aluminum sparkplug inserts,aluminum spark plug |
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Ford
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KIT PART NO.
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LENGTH
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Style
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TAPER SEAT
P/n
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INCHES
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METRIC
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Ford Style inserts
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5553A
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.660
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16.8mm
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Triton style
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51459A
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.965
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24.5mm
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Z-tec style
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51460A
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C5-A® Copper Anti-Seize Stick p/n 37229
Recommended for use on spark plug with aluminum insert.
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