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As you may know, the 3.8L V6 suffers from a variable intake runner that after around 100,000 miles can create some very serious problems. Unfortunately, the variable intake runner is not serviceable and a replacement unit costs around $700 in parts alone.
A somewhat popular mod when faced with a leaking or rattling butterfly rod in the variable intake runner is to delete the entire assembly. This will give you peace of mind knowing that there are now no more bushings, screws, or butterfly valves in the surgetank that can fall into the combustion chambers. However, in our experience, deleting this feature will have cause a large torque reduction of anywhere between 10-20% (depending on your gearing). So while we don't recommend deleting your butterfly valves, we do understand it and that's why we offer this kit.
These 2 aluminum discs are the perfect size to block off the entry port for the butterfly rod after it has been removed from the surge tank. We include 2 discs in case you want to add an addtional block over the rear freeze plug type plug in the rear of the unit or in case you mess up and need a spare.
Note - Although Gen2 DOHC engines also suffer from the dreaded varible intake we do not know if these discs are the correct size for that application.