O’RING 257.8X2.62 PERBUMAN BB VACUUM RM, MATERIAL: O`RING SEALING FOR COARSE VACUUM PUMP FOR ENGINE COOLING – MODEL: O`RING RING 257.8X2.62MM PERBUMAN – POSITION: 412.2 – NOTE: SEALING RING FOR VACUUM PUMP SPECK PUMPEM V95-55.0048, REFERENCE: 3914120388 / 1412.0388, MANUFACTURER: PERBUMAN