Browse Detroit DT12-DA (2ND GEN DIRECT) Transmissions for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 38 listings. Detroit DT12-DA (2ND GEN DIRECT) Transmission pricing ranges from $2,500 to $3,000 based on recent marketplace data. Filter by condition, price, or year to find the right Detroit DT12-DA (2ND GEN DIRECT) Transmission.