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Your cart is empty.The Performance Tool W86904 Thread Repair Kit M14-1.25 is a convenient solution for restoring damaged threads to their original size. Designed for M14-1.25 thread size, it comes with a 4241 HSS M14-1.25 UNC tap, three 304 stainless steel inserts, and an install/punch tool. Compatible with a 9/16-inch (14.5 mm) drill bit size, this kit ensures precise and efficient thread restoration, making it an essential addition to any toolbox or workshop.
Elizabeth ortega
Reviewed in Mexico on February 28, 2025
Excelente opcion para roscas de bujías dañadas, la primera seccion entra en la vieja rosca lo cual permite tener una alineación perfecta y el corte del machuelo es con precisión
Customer
Reviewed in Canada on February 25, 2025
Satisfait
Jimi Avery
Reviewed in the United States on January 15, 2025
Work as it should on my chainsaw
TAYLOR
Reviewed in the United States on August 26, 2024
My mower kept popping the spark plug while in use. This kit gave me new, clean threads for a new plug. Simple, cheap fix.. saved me from buying another mower!Tip: use lots of grease when drilling new threads
Elaine Garrett
Reviewed in the United States on August 13, 2024
The spark plug repair kit worked great! My lawnmower runs perfectly now.
Customer
Reviewed in the United States on July 20, 2024
Didn't last long, but worked fkr a 2014 bmw hub.
normand
Reviewed in Canada on March 14, 2024
parfait reparer mon probleme
trevor
Reviewed in Canada on February 14, 2024
Didn’t really work for what I needed to do. Not sure how to explain it. You can’t use the power tool to put it in my hands and I didn’t know anyone strong enough too much force required in a tight spot that this is made for can’t be done. I give three stairs because maybe I’m just weak.
Constance D. Leombruno
Reviewed in the United States on December 17, 2024
The step tap is only good to chase original threads. It will not thread for the insert without drilling first. instructions do not tell you that or what size bit is needed. Very misleading. DO NOT BUY
Runback 30
Reviewed in the United States on November 17, 2024
worked perfect to repair cylinder head
Zay
Reviewed in the United States on October 27, 2024
Don’t need the inserts pretty much rethreads
kershner
Reviewed in the United States on October 11, 2024
Details follow. Worked okay for me. The tool includes a cutter that precedes the tap needed for the insert. It’s about the same angle as a typical drill bit. Given its large diameter, it takes about 50 pounds force that you manually exert. Keeping it very straight is important or the insert will not be square and the spark plug will not seat properly.
Ted
Reviewed in Canada on July 2, 2018
Works great, slim profile fits easily down narrow spark plug tubes
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