I had very hard time finding the fittings to block off my EGR. Would there be any interest in a kit with 4 fittings and balls to do this? I would sell them basically at cost.

Here’s how I blocked them off. I could have just cut the fittings off my EGR tubes but I didn’t want to make them unusable for the future.

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Here's what it looks like installed.

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BTDT with the bearings...later on I removed the tubes and used a set screw....I wanna say it was 10mm .75 thread