Steering support plate between the bulkhead main bracket and the steering column. Triumph decided two parts were needed, one for left hand steer and one for right,. Close inspection of the parts reveals a minute deference in the angle that the clamps sit at.

This difference will have no impact in operation so, as these parts are not available new, we keep second hand parts under one part number 701158SH. See below

This part appears on the following Triumph Catalogue Plates