BIG-SERT® OVERSIZED SPARK PLUG THREAD REPAIR ALUMINUM INSERTS M14x1.25

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

The hole should not be larger than 16.8mm or .660 inches.

 

Spark plug thread repair kit

SPARK PLUG KITS

OVERSIZED SPARK PLUG THREAD REPAIR ALUMINUM INSERTS

KIT SIZE
BIG-SERT
KIT PART NO.
LENGTH
WASHER SEAT P/N
TAPER SEAT P/N
INCHES
METRIC
M14x1.25
Short Version
——–
M14x1.25
Extended
Version

5141S
——-
5141E
.370
9.4mm
51401A
51451A
.430
11mm
51403A
51453A
.600
15mm
51405A
51455A
.660
16.8mm
51407A
51457A
.964
24.5mm
n/a
51458A
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.