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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 …

DennisB WiseAutoTools.com © Summary: The Calvan 38900 M14x1.25 taper seat spark plug thread repair kit, which is also sold under different labels, works on many Ford SOHC 4.6, 5.4 and 6.8 Liter engines from 1992 to 2016 excluding 3 valve and DOHC engines. The Calvan 38900 is used with the motor/heads in the vehicle. Calvan as well as Time Sert is an over-the fender type repair. These are the most common motors that have the dreaded Ford spark plug blowout problem. Does the 38900 kit wo …

WiseAutoTools.com © Summary: The Calvan 38900 Ford spark plug thread repair kit has the tools needed to repair many 1996 and up SOHC 2-Valve 4.6, 5.4 and 6.8 Liter Ford engines. We identify all the components that make up this spark plug thread repair kit. This kit is used as a first time repair or for a second time repair when a different brand insert like Helicoil Save-A-Thread has failed. The thickness of the insert along with the large lip makes sealing up oversized holes possible, espe …