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DennisB WiseAutoTools.com © Summary: Ford spark plug thread repair question about an oversized thread repair insert failing and now the spark plug hole that needs to be repaired is even larger. Faced with the grim possibility of replacing the cylinder head on a Ford 6.8 liter engine Adam decides to ask for advice.  1/24025 Update - Since this article was written we now offer a less expensive alternative to the Time Sert 5600 kit, see the 389XL for the largest Ford Spark Plug Thread Rep …

WiseAutoTools.com © Summary: Testimonials for the Time Sert 5600 Triple oversize thread repair kit. Wise Auto Tools is happy to offer the Time Sert 5600 which is made in the USA. With so many China made spark plug thread repairs being sold at parts stores that tend to fail sooner or later. It's good to know that an American made kit can save our customers the expense of replacing a cylinder head. Engineered and manufactured in Reno Nevada, the Time Fastener company AKA Time Sert, has bee …