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Part numbers ending with "M" have a Ceramic magnet Part numbers ending with "SM" have a Neodymium magnet
Inch Metric Pipe Thread
How to measure your plug
INCH SIZES
PART NUMBER
½" – 20
1001M 1006M 1007M 1008M
5/8" – 18
1024M
¾" – 16
1054
7/8" – 14 UNF
1056
7/8" – 18
1058
1" – 18
1053
1 1/8" – 12
1055
METRIC SIZES
3024M
12M – 1.25
1040M
12M – 1.5
1021M
12M – 1.75
1003M 1076
14M – 1.25
1017M
14M – 1.5
1002M 1085M 1015M
16M – 1.5
1009M
16.4M – 1.33
1012M
18M – 1.5
1010M
20M – 1.5
1011M
22M – 1.5
1016M 1031M
24M - 1.5
1093M
25M – 1.5
1013M
26M – 1.5
1042M 1043M
PIPE THREAD SIZES
3015M
3016M
3004M
3018M 3013M
3010M
1052 3002M
¾"
1051
3014M
More Sizes and Types
Email us with make, model and year if you are not sure of the plug for your vehicle
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