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TIME SERT 5141E M14x1.25 Extended Reach BIG-SERT Spark Plug Thread Kit

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5141 E
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1.10 LBS
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  • TIME SERT 5141E M14x1.25 Extended Reach BIG-SERT Spark Plug Thread Kit
  • TIME SERT 5141E M14 X 1.25 Extended Reach BIG-SERT Spark Plug Thread Insert Kit (5141E)


TIME-SERT 5141E M14 X 1.25, is an EXTENDED reach BIG-SERT Oversize Spark Plug Thread Repair Kit. Extended tooling makes working down into a deep port easier ( *note Stock Photo Shown). It's for installing over-sized inserts in ports that have been repaired before. Fits many applications including Ford models that have spark plugs that have 14x1.25 threads and 3/4" reach. Inserts are sold separately. *Note the 51457 insert is used for taper seat plugs and the 51407 is used for washer seat plugs with a common reach of 3/4".

" OVERSIZED HOLES" For Spark plugs that have been previously repaired. 

This kit is not recommended for holes larger than .663" (16.8mm). See the Time Sert 5600 for holes up to .73".

If working on a foreign vehicle like Toyota, Mazda, Nissan etc., with washer seat plugs, the most common insert which is sold separately is the 51407.

*If working on 2001 and up Romeo style head (RF-1L2E) the Time Sert 5553 kit is recommended because it comes with the Triton counter bore (PN 55518) and the 5141 does not. 

*If using fully threaded taper seat spark plugs, 51459 inserts which are partially threaded can be used or use the 51457 fully threaded inserts if preferred. Caution: When using 51457's an additional 51484A setting ring is required on the setting tool, for initially installing the insert, to prevent damage to the upper threads. Again inserts are not included with this kit. 

Printable PDF Instructions for TIME-SERT 5141 Big Sert Repair Kit 

Notice our bulk discount prices on TIME-SERT replacement inserts for thread repair kits. Need more information on TIME-SERT thread repair kits? Visit our auto repair blog section on thread repair kits for tips, advice and all your thread repair questions answered. Just comment and we will be quick to respond.

See the pdficon-small.png TIME-SERT products pdf for more information on thread repair kits and inserts. Some are listed for certain applications on cars, trucks and motorcycles. The pdf is a partial application list so feel free to email or call if we can assist with your particular need. We also accept inquiries regarding our daily TIME-SERT specials. Remember TIME-SERT is recommended by leading car manufacturers like the General Motors Corporation. In fact TIME-SERT is GM's only authorized repair for head bolt threads.

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4 Reviews

  • 5

    Time sent 5141E M14x1.25 extended reach big sert spark plug thread kit

    Posted by Richard N on 11th Oct 2022

    This kit worked perfectly, it was just what I needed. I was able to bore out a messed up spark plug hole thread , rethread the hole to the right size ,then install the right insert easily to fit my spark plug size. Saved me from having to pull the heads off.

  • 5

    Worked perfectly

    Posted by Oscar F. on 4th Nov 2019

    Used on 2006 Honda Odyssey cyl #4 radiator side passenger. Watched a couple of YouTube videos as well prior. Used WD-40 and lots and lots of compressed air between each step and at end. Was nervous being first time but took my time, made sure I had no interruptions, said a prayer, and viola! 500 miles later like it never happened. The reamer (and all other tools for that matter) are just as sharp and smooth as before I opened box so I imagine this kit will do plenty of inserts before reamer loses sharpness.

  • 5

    Dodge Stealth Spark Plug Blow Out

    Posted by Brian G on 19th Feb 2018

    Tried the Parts store kit to rethread a spark plug blow out on a 1993 Dodge Stealth 3.0l soho. Blew out again 6 days later. Got the Time Sert kit and did the repair again. Although there was a little interference when trying to cut the recess . I figured that out and finished the install. Felt much better when installing the insert and car has been running fine with no issue since.

  • 5

    Happy customer

    Posted by ted b on 24th Dec 2017

    I purchased the 5141 big sert kit to fix a blownout spark plug that was previously fixed in a 02 mazda tribute with a 3.0 l v6 I am very confident with the process of how the inserts are installed and would recomend this to anyone

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