Description So you want to reach the -10 fitting on your drain without having to make custom tools?  This beautiful piece of Rally Road engineering solves the issue!  O-ring seal rated to 450 degrees.  No paper gaskets and most importantly, no leaks! This drain flange fits Precision Turbos and T3/T4 Turbos with the 2″ (50mm) bolt hole spacing.  It will also fit Borg Warner turbos, but the 8mm holes must be enlarged for 10mm bolts.