The 3055-40 is a light-duty rubber disc used in Merkur vehicles, specifically fitting the Merkur Scorpio and XR4TI at the transmission. It features a bolt circle diameter of 105mm with six bolt holes, each 12mm in diameter, and a disc width of 46mm. This rubber disc is held in shape by a metal band, which should remain intact until the disc is bolted into place to ensure proper installation and function. It is branded by PTI, a trusted name in powertrain components.