Heli-Coil Thread Inserts

4.84 out of 5 stars 108 Customer Reviews

Heli-Coil has the most effective and universally accepted method of thread repair. Heli-Coil inserts work in any part or material--aluminum, magnesium, cast iron, bronze, etc. Damaged threads can be restored to better-than-new condition in spark plug ports, carburetor fuel inlets, transmission housings, oil drain plugs, exhaust and intake manifolds, head bolt holes, brake calipers, and more. They are available in many sizes.

Results 1 - 15 of 15

Heli-Coil Thread Inserts HE5528-5

Thread Inserts, Damaged Thread Repair Kit. Any Part, Any Material, 12 Inserts, Heli-Coil, Kit 5/16-24

Part Number: HLL-5528-5

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Heli-Coil Thread Inserts HE5543-10

Thread Inserts, Heli-Coil, 10mm x 1.25 Thread, 12 Inserts, Kit

Part Number: HLL-5543-10

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Heli-Coil Thread Inserts HE5528-6

Thread Inserts, Damaged Thread Repair Kit. Any Part, Any Material, 12 Inserts, Heli-Coil, Kit 3/8 -24

Part Number: HLL-5528-6

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Heli-Coil Thread Inserts HE5543-12

Thread Inserts, Heli-Coil Repair, 12 x 1.25mm Size, Kit

Part Number: HLL-5543-12

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Heli-Coil Thread Inserts HE5544-14

Thread Inserts, Heli-Coil Repair, 14 x 1.50mm Size, Kit

Part Number: HLL-5544-14

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 11, 2025 if ordered today

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Estimated Ship Date: Dec 11, 2025 if ordered today

Heli-Coil Thread Inserts HE5544-12