VVTi JZ Cam Gear Rebuild Kit. This is the internal o-ring and the front seal for the VVTi cam gear found in 97-UP VVTi JZ engines, 1JZ and 2JZ, turbo and non-turbo. Kit includes a high quality Viton o-ring, and a factory Toyota seal-washer. Installation is simple, just mark the position of the front of the VVTi gear and remove the 5 bolts, the seal sits just behind the cover. The o-ring needs to be stretched slightly by hand just before installation, and then it will sit right in the groove as you screw the cover back on.