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WiseAutoTools.com Summary: The Time Sert 5553 kit is the best option for repairing stripped spark plug threads compared to less expensive Chinese-made parts store inserts. The kit is made in the USA with high-quality materials, provides a better seal, and includes all necessary tools for the repair process. Using the Time Sert 5553 kit also helps prevent future problems, such as blown-out inserts, and the lip design ensures that the insert is not screwed in too far, preventing it from dropp …

DennisB WiseAutoTools.com © Summary: In this article we cover a common question that we receive on the phone and in email inquiries. What’s the difference between the Calvan 38900 and the Time Sert 5553? The Short Answer – Calvan and Time Sert are completely different brands. The Calvan spark plug thread repair kit has a more limited application coverage. The Calvan 38900 primarily works on Ford 4.6, 5.4 and 6.8 SOHC engines 96-2003, on some models up to 2017 excluding 3V and DOHC engines. Time …