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Because the clutch and flywheel are off, the incremental cost of replacing the bearing is about $650 plus about 1 to 2 hours labor. If the indie hasn't replaced one before, it will need to purchase the IMS installation tool kit for about $250. Replacing the IMS bearing is straight forward. The installer simply must follow the instruction exactly.
So the question comes down to this. Do you wish to spend up to $1000 to reduce your IMS bearing failure risk to below 1% or leave the risk somewhere between 5% and 10%? My calculus adds a another risk factor the the decision. If the IMS bearing did fail and one must replace the engine, how does one know the quality and history of the replacement engine. And does the replacement engine have an upgraded IMS bearing? There are ethical and non-ethical vendors out there. The trick is to find one that is trustworthy.
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