Repair Damaged Or Worn Threads

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If stripped/pulled threads are found during removal of a cylinder head or a main bearing cap bolt, the cylinder block must be replaced. DO NOT INSTALL A THREAD REPAIR KIT (Heli-Coil™).

CAUTION:

Be sure that the tapped holes maintain the original center line.

On many applications, damaged or worn threads can be repaired. Essentially, this repair consists of:

Drilling out worn or damaged threads.
Tapping the hole with a special Heli-Coil™ Tap, or equivalent.
Installing an insert into the tapped hole to bring the hole back to its original thread size.