LOWER STRUCTURE Front pillar lower section stiffener 41R PRS4109 D53 Cabriolet This operation can only be carried out after removal of the front pillar. COMPOSITION OF THE REPLACEMENT PART Part only JOINT WITH THE COWL SIDE PANEL (pillar lining) AND SILL PANEL LINING 1 Thickness of panels (mm) Cowl side panel 0.97 Pillar stiffener 1.5 Sill panel lining 1.5 31 spot welds. Welding Ø D = 8 mm After painting and before refitting the trim, pro- tect the hollow sections with wax. 41-28