Recommended for use in twin scroll applications with our Inconel MLS T4 gasket. By using 1.5 (standard pitch) on the manifold side and 1.25 (fine pitch) on the turbo side, the standard pitch thread will stay put in the manifold while the fine pitch 1.25 Inconel nut will be easy to remove without dislodging/unthreading the stud from the flange.
This works perfectly with your existing turbo manifolds which typically use 3/8-16 hardware (the old industry standard). All you need to do is run a 10mm x 1.5 thread chaser through the 3/8-16 threads.
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