New OEM Nissan rubber grommet for the speedometer cable going through the firewall. This rubber grommet is slightly different than the original seal used for the speedo cable, but this grommet fits the firewall hole perfect and seals up to the cable. The center of this grommet is flexible enough that you can fit the large ends of the speedometer cable through it without having to cut and reglue it. Will fit Datsun 240Z, 260Z, and 280Z, 1970-78. Fits hole size .825". This is a genuine Nissan part, just not originally intended as a speedo cable grommet.