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Heli-Coil Thread Inserts
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.
( 115 )
$10.99
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$517.99
Heli-Coil Spark Plug Threaded Inserts
Repair stripped or damaged spark plug threads! Heli-Coil spark plug threaded inserts are manufactured from 18-8 round stainless steel wire formed into a 60 degree diamond-shaped wire. This cold-worked wire (which has a tensile strength of 200,000 psi) is wound into a helical coil with a driving tang and notch—to remove the tang after the insert is screwed into the Heli-Coil tapped hole. In their free state, the inserts are larger in diameter than the tapped hole. Once installed, each insert assumes the configuration of the tapped hole. The resulting outward spring-like action anchors the inserts in place. The Heli-Coil spark plug inserts become an integral part of the cylinder head, providing high-strength threads which exceed in surface smoothness, hardness, and accuracy than any other threads.
( 1 )
$6.99
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$25.99
Heli-Coil Taps
Heli-Coil is an effective and universally accepted method of thread repair, and Heli-Coil taps are available in many of their thread repair kits and individually to help you restore damaged threads to better-than-new condition. The taps are manufactured from steel to the same exacting quality systems required by the military, aerospace, and automotive standards. Heli-Coil taps are available in a range of sizes, and will allow you to create a hole to the sufficient depth to accommodate the insert length and bolt or screw being used.
Not Yet Reviewed
$34.99
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$72.99
Heli-Coil Spark Plug Taps
Heli-Coil spark plug taps are ideal for threading or re-threading spark plug holes and are available in standard and metric threads. These tools tap the hole to sufficient depth to accommodate the insert length and bolt or screw being used. Designed utilizing the finest materials, the spark plug taps will deliver unmatched levels of durability and strength needed to provide long-lasting service life. They offer superior functionality and will help you make any job easier and faster. So, if you are looking for a reliable solution to help complete your project, you will want to use these Heli-Coil spark plug taps.
Not Yet Reviewed
$111.99
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$145.99
Heli-Coil Threaded Insert Installation Tools
Heli-Coil threaded insert installation tools are engineered to provide fast, accurate, and reliable installation of wire thread inserts for thread repair, reinforcement, and OEM assembly applications. Designed to work with a wide range of Heli-Coil inserts, these precision tools help ensure proper insert depth, alignment, and engagement while reducing the risk of cross-threading or installation damage. Available in manual, prewinder, threaded mandrel, pneumatic, and power-assisted configurations, Heli-Coil installation tools support everything from occasional repair work to high-volume production environments. Built for durability and ease of use, these specialized tools deliver consistent repeatable results when restoring stripped threads or creating stronger, longer-lasting threaded connections in aluminum, steel, magnesium, and other materials.
Not Yet Reviewed
$23.99
Heli-Coil Recessed Sav-A-Thread Kits
Heli-Coil recessed Sav-A-Thread kits provide a fast, reliable solution for repairing damaged spark plug threads in automotive and small-engine cylinder heads without costly component replacement. Engineered for use on recessed spark plug applications where access is limited, these comprehensive kits include the specialized tools and inserts needed to restore original thread strength and ensure a secure spark plug fit. Precision-manufactured inserts resist wear, corrosion, and vibration while helping maintain proper sealing and heat transfer characteristics. Ideal for professional technicians and serious DIY mechanics, Heli-Coil recessed Sav-A-Thread kits offer a durable, permanent thread repair that helps extend engine life, reduce downtime, and restore confidence in critical ignition system repairs.
Not Yet Reviewed
$501.99
