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10 Best spark plug thread repair kits of 2026

Explore top picks
  • Best Choice

    1

    Time-Sert® M14x1.25 Spark Plug Thread Repair kit p/n 4412E-111
    TIME-SERT

    Time-Sert® M14x1.25 Spark Plug Thread Repair kit p/n 4412E-111

    9.9
    Exceptional
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  • Value for Money

    2

    CLLOMAGY 38900 Two Valve Tool Kit for Ford Triton,Spark Plug Thread Repair Kit,Foolproof Spark Plug Repair System Compatible with Ford F150/250/350 E150/250/350 4.6L,5.4L,6.8L Two Valve Engine
    CLLOMAGY

    CLLOMAGY 38900 Two Valve Tool Kit for Ford Triton,Spark Plug Thread Repair Kit,Foolproof Spark Plug Repair System Compatible with Ford F150/250/350 E150/250/350 4.6L,5.4L,6.8L Two Valve Engine

    9.8
    Exceptional

  • 3

    ZKTOOL 14mm Cylinder Head Rethreaded Kit, Spark Plug Thread Repair Kit,14mm Reamer Cylinder Thread Repair Tool,Spark Plug Rethreader Kit,4 Thread Insert. M14 x 1.25
    ZKTOOL

    ZKTOOL 14mm Cylinder Head Rethreaded Kit, Spark Plug Thread Repair Kit,14mm Reamer Cylinder Thread Repair Tool,Spark Plug Rethreader Kit,4 Thread Insert. M14 x 1.25

    9.7
    Exceptional

  • 4

    Spark Plug Thread Repair Kit, 14mm Cylinder Head Rethreaded Kit Repair Tools Gasoline Engine M14x1.25 Inserts and M16x1.25 Tap Kit
    Yunseity

    Spark Plug Thread Repair Kit, 14mm Cylinder Head Rethreaded Kit Repair Tools Gasoline Engine M14x1.25 Inserts and M16x1.25 Tap Kit

    9.6
    Exceptional

  • 5

    MARKETTY 38900 Two Valve Ford Triton Tool Kit, Foolproof Repair System, Spark Plug Thread Repair Kit Compatible with 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines
    MARKETTY

    MARKETTY 38900 Two Valve Ford Triton Tool Kit, Foolproof Repair System, Spark Plug Thread Repair Kit Compatible with 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines

    • Quantity:8 Inserts
    • Dimensions:12.99 x 10.59 x 3.19 inches
    • Material:High quality thickened steel
    • Repair Size:M14-1.25 Inserts
    • Performance:Cost effective and fast
    9.4
    Excellent
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  • 6

    OEMTOOLS 25647 5-Piece Spark Plug Saver, M14-1.25 Thread Reamer and Thread Inserts, Includes 3 Thread Inserts, 1 Reamer, & 1 Swaging Tool
    OEMTOOLS

    OEMTOOLS 25647 5-Piece Spark Plug Saver, M14-1.25 Thread Reamer and Thread Inserts, Includes 3 Thread Inserts, 1 Reamer, & 1 Swaging Tool

    9.3
    Excellent

  • 7

    Helicoil 5334-14 Save-A-Thread Thread Repair Kit M14 x 1.25
    Helicoil

    Helicoil 5334-14 Save-A-Thread Thread Repair Kit M14 x 1.25

    9.1
    Excellent

  • 8

    SHMZK 11 PCS Spark Plug Thread Repair Kit, M14×1.25 Inserts and M16×1.25 Tap Spark Plug Rethreading Set, Stainless Steel Thread Repair Tool Kit for Automotive Gasoline Engines Generators
    SHMZK

    SHMZK 11 PCS Spark Plug Thread Repair Kit, M14×1.25 Inserts and M16×1.25 Tap Spark Plug Rethreading Set, Stainless Steel Thread Repair Tool Kit for Automotive Gasoline Engines Generators

    8.9
    Very Good

  • 9

    GallopMax 38900 Two Valve Triton Tool Kit Foolproof Repair System Spark Plug Thread Repair Kit Compatible with Ford 4.6 L, 5.4 L and 6.8 V-10 Two Valve Engines
    GallopMax

    GallopMax 38900 Two Valve Triton Tool Kit Foolproof Repair System Spark Plug Thread Repair Kit Compatible with Ford 4.6 L, 5.4 L and 6.8 V-10 Two Valve Engines

    8.6
    Very Good

  • 10

    Performance Tool W86910 Spark Plug Repair Kit M14-1.25 Thread Size & HSS Tapered Reamer, (3) 503 Stainless Steel Inserts
    Performance Tool

    Performance Tool W86910 Spark Plug Repair Kit M14-1.25 Thread Size & HSS Tapered Reamer, (3) 503 Stainless Steel Inserts

    8.5
    Good