The T43 made it possible to phase out steam locomotives in Sweden, with none left in service there after 1963. Until the mid-1980s the T43 was used on main-line services, both for passenger and freight trains. The main area of passenger service was on Blekingekustbanan. During the late 1980s the successor T44 took over more and more of the T43's duties. SJ took the T43 out of service in the 1990s, though some were transferred to Banverket and TGOJ, who in turn sold them to private railways that used them for freight and shunting services.