2015-19. Left.HYDRAULIC. M5x10mm. PartQualifier: M5x10mm. Right.HYDRAULIC. Shield bolt. A bolt used to attach the rack and pinion heat shield to its mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the steering wheel back cover to it's mounting point. Column housing. Rack and Pinion Heat. Steering Wheel Back Cover.