Original used Borg Warner 4 speed transmission 2^nd gear - removed from a 1980 Chevy Z28 Camaro 4 speed Super T10 transmission - showing typical use from a driven 35+ year old gear - Some minor interference chips as shown of typical age on the engagement teeth - Good condition constant mesh gears with good to fair condition engagement teeth as shown - Tooth count is 25 as shown – (input and cluster were the 6 line “Z” ratio) Transmission ratios were 3.42/2.28/1.46/1.00 - Fits 1975-1984 Borg Warner Super T10 4 speed transmissions with 1" cluster pin - gear is in “as found” condition as shown – transmission had sat in one position for several years and did get some surface rust and then was driven for a year and left speckling on the constant mesh faces of a few teeth as shown - verify if the condition fits your standards for your application