" OVERSIZED HOLES" For Sparkplugs that have been previously repaired.

The outside thread of the BIG-SERT is M18x1.5, the stripped hole should not be larger than 16.3mm or .640 inches.

SPARK PLUG KITS DO NOT INCLUDE INSERTS

p/n 5141 repair instructions

KIT SIZE BIG-SERT	KIT PART NO.
		LENGTH		WASHER SEAT P/N	TAPER SEAT P/N
		INCHES	METRIC
M14x1.25 -------- M14x1.25 Extended Version	5141 ------- 5141E NOTES:	.370	9.4mm	51401A	51451A
		.430	11mm	51403A	51453A
		.600	15mm	51405A	51455A
		.660	16.8mm	51407A	51457A
		.964	24.5mm	n/a	51458A
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Ford	KIT PART NO.
		LENGTH		Style	TAPER SEAT P/n
		INCHES	METRIC
Ford Style inserts	5553A	.660	16.8mm	Triton style	51459A
		.965	24.5mm	Z-tec style	51460A
C5-A® Copper Anti-Seize Stick p/n 37229 Recommended for use on spark plug with aluminum insert.

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