M14-1.25 Plug-Saver Kit - 1 each insert S, N, L
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Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L

Part No. 98141 Warranty Details  
$29.99
Quantity  Add to Cart
Designed to repair M14-1.25 spark plug ports with no drilling required, the Plug-Saver repair system has long been the choice of professional mechanics and engine rebuilders. Available in three thread lengths, the Plug-Saver insert's mechanical locking system ensures permanent installation. Using Fix-A-Thred Plug-Saver systems is both quick and easy, and every kit includes three different length inserts, a pilot tap, and expansion tool.

Product Features:
  • Repairs worn, damaged, or stripped threads.
  • Can be successfully used with any alloy or cast-iron head.
  • Kits available to fit M14-1.25 spark plug port threads, gasketed or tapered.
  • Designed for use with almost any engine - automotive, motorcycle, marine, outdoor power equipment, and more
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Length:14 mm
Material:Stainless Steel
Wrench Size:14 mm

REVIEW SNAPSHOT®

by PowerReviews
Fix-A-ThredM14-1.25 Plug-Saver Kit - 1 each insert S, N, L
 
2.7

(based on 22 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (7)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (8)

58%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

  • Limited function (6)

Best Uses

  • Automotive repair shop (5)
  • Home (3)
  • Minor repairs (3)
    • Reviewer Profile:
    • Mechanic (3)
    • Reviewer Profile:
    • Mechanic (3)

Most Liked Positive Review

 

30 Minute Fix!

It's late saturday in my beat around 81 toyota when the spark plug decides to eject itself from its aluminum threaded head. At first I panicked, I didn't have time or the money to...Read complete review

It's late saturday in my beat around 81 toyota when the spark plug decides to eject itself from its aluminum threaded head. At first I panicked, I didn't have time or the money to fool with such a problem. However, I was right across from Advance auto, so I thought I might as well pull in and see what they could do for me. To my surprise there was this product for [$] that fit perfectly to my exact problem. I went online to Alcoa's website to ensure proper use of the tapping tool and counter sink, and then went to work. Within a half hour I had rethreaded, cleaned, and reseated my spark plug! My weekend and my wallet were saved! Thanks Advance!

VS

Most Liked Negative Review

 

junk

i snaped this thing in half with one hand while tring to fix my spark plug thread. mine was proably flawed.

i snaped this thing in half with one hand while tring to fix my spark plug thread. mine was proably flawed.

Reviewed by 22 customers

Displaying reviews 1-10

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(18 of 37 customers found this review helpful)

 
5.0

It works

By 

from Tampa,Fl.

Helpful Reviewer

Pros

    Cons

      Best Uses

      • Automotive Repair Shop

      Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

      Go slow, helps if you have work with inserts or heli-coils before,made sure piston was just on it's way up,greased the tool to catch shavings, used compressor to blow shavings out of cylinder(blew out 6 times),clean threads, I used red permatex thread locker(300+ degrees)for insert let it cure 24hrs., torque to specs. Did this Sat., tested Sun.,drove to work Mon., Tues. was off to S.C.,no problems,12oo+ miles, 89 toyota pickup

      (36 of 62 customers found this review helpful)

       
      5.0

      saved the day

      By 

      from USA

      About Me DIY auto repairs

      See all my reviews

      Helpful Reviewer

      Pros

      • Thread cutting is so EZ

      Cons

        Best Uses

        • Home

        Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

        This little tool made a short-term disaster disappear. Very easy to cut new threads into an aluminum head. Use plenty of grease on the tool to catch and hold onto the damaged threads. Would recommend that you also use a shot of compressed air to blow away the chips/grease as you back this tool out of the newly tapped hole. So easy, even a caveman can do it.

        (2 of 2 customers found this review helpful)

         
        4.0

        Best most inexpensive option

        By 

        from Cumberland, MD

        Verified Reviewer

        Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

        My SparkPlug blew out of my Honda Ridgeline. I was able to drive 200 miles with only 5 plugs... any way here are some tips,
        1. If the sparkplug bore hole is to small you may need to grind the taphead to fit your sparkplug socket, I did for my Honda.
        2. Place the correct size thread insert on the sparkplug, it should fit the entire thread shaft without hanging over, count the number of turns it takes to completely turn all the way onto the sparkplug. It took 9 1/4 turns for my Ridgeline plug.
        Using a standard socket wrench and the needed extensions for your vehicle.
        3. Now when you tap your threads, place some grease on the tap, be sure to press firmly and turn the tap slowly and count the number of complete turns you make, make sure to surpass the number of turns by 1/4-1 complete turn that you counted previous w/the insert and plug, I used 10 turns for my Ridgeline. Back the tap out.
        4. Clean the grease and shavings from the tap and clean the sparkplug bore hole with starter fluid. Start your vehicle to blow out any excess shavings and to air clean the new threads.
        5. Place the insert on the tap, use high temp threadlock on the outside threads of the insert. Turn the insert onto the newly tapped threads using the same count as you counted for tap. My Ridgeline was 10 turns. Back out the tap. For best results allow 24hrs for the threadlock to cure... replace your spark plug and your good to go!
        NOTE! If you plug blew out like mine go through all your plugs and re tighten them back down so that it won't happen to the others!

        • Was this a gift?:
        • No

        (6 of 10 customers found this review helpful)

         
        4.0

        Great Product--Easy Fix with Modification

        By 

        from Garnerville, NY

        Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

        Used it to fix my blown spark plug on my 2001 Ford Escape. This is a great tool to use because I did not have to remove my cylinder head. The only problem was that the head of the thread chaser fits a 3/4 socket and that is too big to fit in the spark plug tube. Only an 11/16 socket fits and so I had to grind down the head to fit the 11/16 socket. Afterwards I greased the threader to catch the shavings and blew out the rest. I used Red sealant to affix the heli coil and used the spark plug to turn it in. The tap tool was too short so I used an extension to hammer it in. The truck works fine now with no problems.

        (8 of 17 customers found this review helpful)

         
        4.0

        custom rethreader failure

        By 

        from Kalamazoo. Mi

        Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

        Well after buying this product.. I find that the head of rethreader is a 19mm n wont fit in head with a socket onit hole is 17mm.so I weld a extension on top of it and after rethreading toalmost bottom the weld snaps so now rethreader is stuck in head and

        (16 of 32 customers found this review helpful)

         
        4.0

        Excellent

        By 

        from Ft. wayne Indiana

        About Me Mechanic

        Verified Buyer
        Helpful Reviewer

        Pros

        • Durable

        Cons

          Best Uses

          • Automotive Repair Shop

          Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

          Excellent for the Ford 4.6 and 5.4 spark plug problems.

          (53 of 91 customers found this review helpful)

           
          4.0

          Worked great

          By 

          from South Florida

          Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

          Fixed a stripped spark plug hole in an 8 hp Tecumseh engine, worked great. But---here you can easily remove the head and do it right. On a car, you run the danger of getting chips in the cylnder if you don't grease the tap enough to catch them. Clever design, indexes on the old thread and then reams and threads for the insert. Wish they had replacement inserts and an 18mm version....

          (33 of 59 customers found this review helpful)

           
          4.0

          great tool

          By 

          from edinboro, PA

          About Me Dirt floor mech

          Verified Reviewer

          Pros

          • Easy to use

          Cons

          • Hard to find replacement
          • Inserts

          Best Uses

          • Automotive Repair Shop
          • Home
          • Small engine

          Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

          the product worked great and was easy to use. the cost was not to bad. but I tried to find replacement inserts and can not find just the size i need.

          (37 of 63 customers found this review helpful)

           
          4.0

          30 Minute Fix!

          By 

          from Statesville, NC

          About Me Casual Driver, Mechanic

          Verified Reviewer

          Pros

          • Simple and easy

          Cons

          • None

          Best Uses

          • Automotive Repair Shop
          • Minor Repairs

          Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

          It's late saturday in my beat around 81 toyota when the spark plug decides to eject itself from its aluminum threaded head. At first I panicked, I didn't have time or the money to fool with such a problem. However, I was right across from Advance auto, so I thought I might as well pull in and see what they could do for me. To my surprise there was this product for [$] that fit perfectly to my exact problem. I went online to Alcoa's website to ensure proper use of the tapping tool and counter sink, and then went to work. Within a half hour I had rethreaded, cleaned, and reseated my spark plug! My weekend and my wallet were saved! Thanks Advance!

          (15 of 30 customers found this review helpful)

           
          3.0

          Works with slight modification

          By 

          from Plainfield, CT

          Ask me a question

          Helpful Reviewer

          Pros

          • Didn't Break

          Cons

          • Tap Head Is Too Big

          Best Uses

            Comments about Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L:

            After reading several reviews I decided to give this a shot on my 1988 Mazda 626. I figured I had nothing to loose since I wasn't going to pay for a head job. I inserted the tool into the spark plug hole and it looked like I had enough clearance around the hole for it to work. As I worked the tool in and out of the plug hole, I realized that the 19mm socket wasn't going to be able to drive the tool all the way through the 3/4" deep plug hole.
            So, I took a belt sander to the head of the tool and spent an hour shaving down the head of the tool to 16mm. After that i was able to complete the tap. I installed the thread insert with a gasket sealer and let it set for 24 hours. I have since put serveral thousand miles on with no problems.

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            Do you have questions about this product?

             

            Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

            26 Questions | 27 Answers
            Displaying questions 1-10Previous | Next »
            • Q:

              What is the thread size of the larger portion of the tap?
              Asked on 6/4/2017 by David from Florida

              1 answer

              • CUSTOMER CARE

                A:

                Glad to assist, David! This Fix-A-Thred M14-1.25 Plug-Saver Kit - Part No. 98141 includes 1/4", 3/8" and 5/8" - inch inserts. This is designed to repair M14-1.25 spark plug port threads, gasketed or tapered.

                Answered on 6/5/2017 by Solomon from AAP
            • Q:

              What is the thread size of the larger portion of the tap?
              Asked on 6/4/2017 by David from Florida

              1 answer

              • CUSTOMER CARE

                A:

                Glad to assist, David! This Fix-A-Thred M14-1.25 Plug-Saver Kit - Part No. 98141 includes 1/4", 3/8" and 5/8" - inch inserts. This is designed to repair M14-1.25 spark plug port threads, gasketed or tapered.

                Answered on 6/6/2017 by Solomon from AAP
            • Q:

              This kit requires a 3/4 or 19mm socket. This size socket is too big to fit in the hole where the spark plug is on my 06 Ford escape. What part do I need to get to fit the thread maker that will also fit inside the hole?
              Asked on 11/15/2016 by K. Rose from Fuquay Varina NC

              1 answer

              • CUSTOMER CARE

                A:

                Hi Rose! The exact plug saver kit for your vehicle is currently unavailable online. I would suggest that you visit the nearest Advance Auto Parts store to check the availability of this part.

                Answered on 11/19/2016 by Steve from AAP
            • Q:

              Do I need to use thread locker or any other type of sealant with this kit?
              Asked on 12/3/2014 by RVC from CT

              2 answers

              • A:

                Yes High Temp RTV the correct instructions are here.... http://afs-fix.com/fix-a-thred/08.htm

                Answered on 8/18/2015 by Doober from Belle Vernon, P
              • CUSTOMER CARE

                A:

                I'm happy to help, RVC! No additional products are needed with this Fix-A-Thred Plug-Saver Kit (Part No. 98141). The installation instructions are located here: http://afs-fix.com/fix-a-thred/04.htm#installation

                Answered on 12/16/2014 by Heath, ASE Parts Specialist from AAP
            • Q:

              can I CHANGE A COARSE THREAD TO SPARK PLUG THREAD???/ I USED INCORRECT HELI-COIL COARSE THREAD-- SHOULD HAVE BEEN A SPARK PLUG HELI-COIL--- WILL IT WORK WITH SAME PLUG i HAVE? ON OUTBOARD MOTOR-235 EVINRUDE--- HELP--------THANKS
              Asked on 8/14/2014 by syl from Canada

              1 answer

              • CUSTOMER CARE

                A:

                Sorry, I would not be able to tell you. If you changed the thread pitch with the incorrect heli-coil it would be best to try and remove the heli-coil and install the correct one. Heli-coils are not designed to be re-threaded. You will need whichever thread pitch you decide to go with to match the cylinder head and the spark plug pitch.

                Answered on 8/15/2014 by K from AAP
            • Q:

              my 235 hp evinrude plug was stripped----I tried heli-coil---but it was improper thread--coarse thread--- 14mm x 1.25 --- what ia best way to repair--??/ I need a new thread for spark plug--- thanks

              should I re-drill thread out---then re-thread ? or will re-threading with spark plug thread (fine) do the trick--?????? thanks
              Asked on 8/13/2014 by syl from Canada

              1 answer

              • CUSTOMER CARE

                A:

                Sorry, I would not be able to tell you. If you changed the thread pitch with the incorrect heli-coil it would be best to try and remove the heli-coil and install the correct one. Heli-coils are not designed to be re-threaded. You will need whichever thread pitch you decide to go with to match the cylinder head and the spark plug pitch. If you are not able to repair it, your only choice may be a new cylinder head.

                Answered on 8/15/2014 by K from AAP
            • Q:

              Will this work for a 96 toyota tacoma v6 (3400 four cam 24.) My problem now is that the plug blew out while taking the threads with it. no threads to screw plug back in. took the metal sleeve off that exposes the channel for the plug. about 2 inches deep there is a ridge that is preventing my socket from tapping the threads at the bottom of channel.
              Asked on 7/1/2014 by ed from MS

              1 answer

              • CUSTOMER CARE

                A:

                Hi ED, glad to serve you! This part is designed to repair M14-1.25 spark plug ports with no drilling required, the Plug-Saver repair system has long been the choice of professional mechanics and engine rebuilders. Available in three thread lengths, the Plug-Saver insert’s mechanical locking system ensures permanent installation. Using Fix-A-Thred Plug-Saver systems is both quick and easy, and every kit includes three different length inserts, a pilot tap, and expanding tool. Repairs worn, damaged, or stripped threads and can be successfully used with any alloy or cast-iron head. Kits available to fit M14-1.25 spark plug port threads, gasketed or tapered. It is designed for use with almost any engine—automotive, motorcycle, marine, outdoor power equipment, and more.

                Answered on 7/3/2014 by Steve from AAP
            • Q:

              Will this product work with spark plug Champion 3344?
              Asked on 1/13/2014 by Megaputz from Johnstown, NY

              1 answer

              • CUSTOMER CARE

                A:

                Hi Megaputz, good question! This spark plug repair kit is not spark plug specific. This kit is designed to repair 14-millimeter, tapered seat and gasketed spark plug ports in aluminum and cast iron heads. The kit includes a tap, an expanding tool and one each of 3 sizes of inserts (1/4-inch, 3/8-inch and 5/8-inch).

                Answered on 1/15/2014 by Vincent from AAP
            • Q:

              i need 8 more of the long inserts , where can i get more?
              Asked on 12/2/2013 by kimo from oak creek wi 53154

              1 answer

              • CUSTOMER CARE

                A:

                Hello Kimo, we do not sell the long insert separately from this kit online. However, I suggest you to visit your nearest Advance Auto Parts store or call us at 1-877-238-2623 and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                Answered on 12/3/2013 by Morgan from AAP
            • Q:

              What size socket is used on the tap ?
              Asked on 9/7/2013 by Johnny from Newark OH

              1 answer

              • CUSTOMER CARE

                A:

                The Fix-A-Thred M14-1.25 Plug-Saver Kit - 1 each insert S, N, L - Part No. 98141 uses a 19mm socket. For any further assistance please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

                Answered on 9/9/2013 by John the Car-Doc from AAP
            Displaying questions 1-10Previous | Next »

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