I ended up stripping one of the front bolts on my intake manifold during the final torque and I'm looking for some help in identifying which helicoil set I need for the repair. Would also welcome any thoughts/advice to my approach. First, is the helicoil the best method for this or is there something else I should be considering? The bolt hole is accessible so I'm planning to drill and tap without removing the manifold as there appears to be enough room to do so without also cutting the manifold. I believe the helicoil kit comes with the standard coils but I did see a video where they were being used on a stripped head bolt and a longer coil was used in that application. Thoughts on whether or not the standard size would be sufficient for the intake manifold bolt? Thanks!

 

Which bolt is it? It makes a difference relative to the water jackets in the head versus the intake ports.

 

It's the driver side front. One of the longer bolts on the manifold. Here's a pic of it.