Products Volvo PentaO-Ring Back O-Ring 955989 Item number: 955989 Similar numbers: SIERRA 18-7149 GLM 45140 ID: 15 mm W: 1.5 mm Fit on Volvo DP-S. You May Also Be Interested In O-Ring 955989 Sealing Ring 853807 Gasket, Valve Seat 6M6-13566-00 Ignition Coil 62T-85533-00