Big-Sert 5141S M14 x 1.25mm Spark Plug Thread Repair Kit. Big Sert Spark Plug Thread Repair Kits Made in USA. Big Sert 5141S thread repair kit.
“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.
THIS KIT DOES NOT CONTAIN INSERTS.
PLEASE ORDER YOUR INSERTS FROM THE LINKS BELOW.
Order Carbon Steel Washer Seat Inserts Click Here
Order Carbon Steel Taper Seat Inserts Click Here
