Nuts with option for studs or viking washers, Turbo manifold nuts ford 2.3 E6 XR4TI lock nut Stuttgart T3 GT28 10mm x 1.5mm. Genuine German made fasteners for mounting hot stuff especialy turbos. The Ford 2.3 turbo motor has 4 of these on them, these are copper plated, wrenching size of 15mm, these are highly vibration resistant.
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