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TIME-SERT 5141 Big Sert M14x1.25 Spark Plug Thread Repair Kit

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5141 S
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6.00 LBS
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  • TIME-SERT 5141 Big Sert M14x1.25 Spark Plug Thread Repair Kit
  • Time Sert Big Sert kit used for washer set or taper seat spark plugs.


Includes Free Shipping. TIME-SERT 5141S (Short) M14 X 1.25 BIG-SERT for non recessed plugs. Oversize Spark Plug Thread Repair Kit repairs threads 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. 

The outside thread of the BIG-SERT is M18x1.5, the stripped hole should not be larger than 16.3mm or .640 inches.

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


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 2001 and up Romeo style head (RF-1L2E) the 5553 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.  

Mouse over the images above for a more detailed view of the kit components. Also 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 page 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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