TŁOK KOMPLETNY OLEOMAC 961, 962, EFCO 162 AIP Piston diameter 48mm Piston height 38mm Ring thickness 1.5 mm (2 pieces) Piston pin 12mm x 32mm Reference No. This is not an original spare part, but a high quality (OEM) replica part in OEM quality. Original part number and brand names are for comparison purposes only.